diff --git a/.github/workflows/elixir_test.yml b/.github/workflows/elixir_test.yml
index 2a25d5a3..62b2855a 100644
--- a/.github/workflows/elixir_test.yml
+++ b/.github/workflows/elixir_test.yml
@@ -11,6 +11,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v1
+        with:
+          submodules: true
+
       - name: Install Dependencies
         run: |
           mix local.rebar --force
diff --git a/.gitignore b/.gitignore
index e9fad5c6..f2b1435c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,6 +32,8 @@ ex_mentor-*.tar
 test_results.json
 analysis.json
 
+.mix/
+
 tmp/
 
 /priv/plts/*.plt
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..2212afac
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "elixir"]
+	path = elixir
+	url = https://github.com/exercism/elixir.git
diff --git a/config/test.exs b/config/test.exs
index 279392a4..28c45b13 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -1,3 +1,3 @@
 use Mix.Config
 
-config :logger, level: :error
+config :logger, level: :warn
diff --git a/elixir b/elixir
new file mode 160000
index 00000000..1a1cec4e
--- /dev/null
+++ b/elixir
@@ -0,0 +1 @@
+Subproject commit 1a1cec4e27757edfdd4f59354b27c2ae5d054adc
diff --git a/lib/elixir_analyzer.ex b/lib/elixir_analyzer.ex
index d548bf40..401caee5 100644
--- a/lib/elixir_analyzer.ex
+++ b/lib/elixir_analyzer.ex
@@ -43,8 +43,8 @@ defmodule ElixirAnalyzer do
   * `:output_file`, - specifies the name of the output_file, defaults to
     `@output_file` (`analysis.json`)
 
-  * `:exercise_config` - specifies the path to the JSON exercise configuration,
-    defaults to `@exercise_config` (`./config/exercise_data.json`)
+  * `:exercise_config` - specifies the path to the exercise configuration,
+    defaults to `@exercise_config` (`./config/config.exs`)
 
   * `:write_results` - boolean flag if an analysis should output the results to
     JSON file, defaults to `true`
@@ -110,11 +110,12 @@ defmodule ElixirAnalyzer do
     try do
       Logger.debug("Getting the exercise config")
       exercise_config = params.exercise_config[params.exercise]
-      {code_path, code_file, analysis_module} = do_init(params, exercise_config)
+      {code_path, code_file, exemplar_path, analysis_module} = do_init(params, exercise_config)
 
       Logger.debug("Initialization successful",
         path: params.path,
         code_path: code_path,
+        exemplar_path: exemplar_path,
         analysis_module: analysis_module
       )
 
@@ -131,6 +132,7 @@ defmodule ElixirAnalyzer do
         submission
         | code_path: code_path,
           code_file: code_file,
+          exemplar_path: exemplar_path,
           analysis_module: analysis_module
       }
     rescue
@@ -166,7 +168,14 @@ defmodule ElixirAnalyzer do
     code_path = Path.dirname(full_code_path)
     code_file = Path.basename(full_code_path)
 
-    {code_path, code_file, exercise_config[:analyzer_module] || ElixirAnalyzer.TestSuite.Default}
+    exemplar_path =
+      case meta_config["files"]["exemplar"] do
+        [path | _] -> Path.join(params.path, path)
+        _ -> nil
+      end
+
+    {code_path, code_file, exemplar_path,
+     exercise_config[:analyzer_module] || ElixirAnalyzer.TestSuite.Default}
   end
 
   # Else, use passed in params to analyze
@@ -181,7 +190,9 @@ defmodule ElixirAnalyzer do
   # Check
   # - check if the file exists
   # - read in the code
-  # - compile
+  # - check if there is an exemplar
+  # - read in the exemplar
+  # - parse the exemplar into an AST
   defp check(%Submission{halted: true} = submission, _params) do
     Logger.warning("Check not performed, halted previously")
     submission
@@ -192,7 +203,19 @@ defmodule ElixirAnalyzer do
          :ok <- Logger.info("Attempting to read code file", code_file_path: path_to_code),
          {:code_read, {:ok, code_str}} <- {:code_read, File.read(path_to_code)},
          :ok <- Logger.info("Code file read successfully"),
-         {:code_str, submission} <- {:code_str, %{submission | code: code_str}} do
+         submission <- %{submission | code: code_str},
+         :ok <- Logger.info("Check if exemplar exists", exemplar_path: submission.exemplar_path),
+         {:exemplar_exists, submission, exemplar_path} when not is_nil(exemplar_path) <-
+           {:exemplar_exists, submission, submission.exemplar_path},
+         :ok <-
+           Logger.info("Exemplar file exists, attempting to read", exemplar_path: exemplar_path),
+         {:exemplar_read, submission, {:ok, exemplar_code}} <-
+           {:exemplar_read, submission, File.read(exemplar_path)},
+         :ok <- Logger.info("Exemplar file read successfully, attempting to parse"),
+         {:exemplar_ast, submission, {:ok, exemplar_code}} <-
+           {:exemplar_ast, submission, Code.string_to_quoted(exemplar_code)},
+         :ok <- Logger.info("Exemplar file parsed successfully"),
+         submission <- %{submission | exemplar_code: exemplar_code} do
       submission
     else
       {:code_read, {:error, reason}} ->
@@ -211,6 +234,24 @@ defmodule ElixirAnalyzer do
           },
           type: :essential
         })
+
+      {:exemplar_exists, submission, nil} ->
+        Logger.info("There is no exemplar file for this exercise")
+        submission
+
+      {:exemplar_read, submission, {:error, reason}} ->
+        Logger.warning("Exemplar file not found. Reason: #{reason}",
+          exemplar_path: submission.exemplar_path
+        )
+
+        submission
+
+      {:exemplar_ast, submission, {:error, reason}} ->
+        Logger.warning("Exemplar file could not be parsed. Reason: #{inspect(reason)}",
+          exemplar_code: submission.exemplar_code
+        )
+
+        submission
     end
   end
 
@@ -226,7 +267,7 @@ defmodule ElixirAnalyzer do
 
     submission =
       submission
-      |> submission.analysis_module.analyze(submission.code)
+      |> submission.analysis_module.analyze(submission.code, submission.exemplar_code)
       |> Submission.set_analyzed(true)
 
     Logger.info("Analyzing code complete")
diff --git a/lib/elixir_analyzer/constants.ex b/lib/elixir_analyzer/constants.ex
index c1a88097..d63522b6 100644
--- a/lib/elixir_analyzer/constants.ex
+++ b/lib/elixir_analyzer/constants.ex
@@ -26,6 +26,7 @@ defmodule ElixirAnalyzer.Constants do
     solution_debug_functions: "elixir.solution.debug_functions",
     solution_last_line_assignment: "elixir.solution.last_line_assignment",
     solution_compiler_warnings: "elixir.solution.compiler_warnings",
+    solution_same_as_exemplar: "elixir.solution.same_as_exemplar",
 
     # Concept exercises
 
diff --git a/lib/elixir_analyzer/exercise_test.ex b/lib/elixir_analyzer/exercise_test.ex
index 2fd612b2..933e21dd 100644
--- a/lib/elixir_analyzer/exercise_test.ex
+++ b/lib/elixir_analyzer/exercise_test.ex
@@ -19,7 +19,7 @@ defmodule ElixirAnalyzer.ExerciseTest do
 
       import unquote(__MODULE__)
       @before_compile unquote(__MODULE__)
-      @dialyzer no_match: {:do_analyze, 3}
+      @dialyzer no_match: {:do_analyze, 4}
     end
   end
 
@@ -43,24 +43,24 @@ defmodule ElixirAnalyzer.ExerciseTest do
     assert_call_tests = Enum.map(assert_call_data, &AssertCallCompiler.compile(&1, code_ast))
 
     quote do
-      @spec analyze(Submission.t(), String.t()) :: Submission.t()
-      def analyze(%Submission{} = submission, code_as_string) when is_binary(code_as_string) do
+      @spec analyze(Submission.t(), String.t(), nil | Macro.t()) :: Submission.t()
+      def analyze(%Submission{} = submission, code_as_string, exemplar_ast) do
         case Code.string_to_quoted(code_as_string) do
           {:ok, code_ast} ->
-            do_analyze(submission, code_ast, code_as_string)
+            do_analyze(submission, code_ast, code_as_string, exemplar_ast)
 
           {:error, e} ->
             append_analysis_failure(submission, e)
         end
       end
 
-      defp do_analyze(%Submission{} = submission, code_ast, code_as_string)
+      defp do_analyze(%Submission{} = submission, code_ast, code_as_string, exemplar_ast)
            when is_binary(code_as_string) do
         results =
           Enum.concat([
             unquote(feature_tests),
             unquote(assert_call_tests),
-            CommonChecks.run(code_ast, code_as_string)
+            CommonChecks.run(code_ast, code_as_string, exemplar_ast)
           ])
           |> filter_suppressed_results()
 
diff --git a/lib/elixir_analyzer/exercise_test/common_checks.ex b/lib/elixir_analyzer/exercise_test/common_checks.ex
index 963ee97c..183a9c71 100644
--- a/lib/elixir_analyzer/exercise_test/common_checks.ex
+++ b/lib/elixir_analyzer/exercise_test/common_checks.ex
@@ -9,6 +9,7 @@ defmodule ElixirAnalyzer.ExerciseTest.CommonChecks do
     ModuleAttributeNames,
     ModulePascalCase,
     CompilerWarnings,
+    ExemplarComparison,
     Indentation
   }
 
@@ -23,14 +24,15 @@ defmodule ElixirAnalyzer.ExerciseTest.CommonChecks do
     end
   end
 
-  @spec run(Macro.t(), String.t()) :: [{:pass | :fail | :skip, %Comment{}}]
-  def run(code_ast, code_as_string) when is_binary(code_as_string) do
+  @spec run(Macro.t(), String.t(), nil | Macro.t()) :: [{:pass | :fail | :skip, %Comment{}}]
+  def run(code_ast, code_as_string, exemplar_ast) when is_binary(code_as_string) do
     [
       FunctionNames.run(code_ast),
       VariableNames.run(code_ast),
       ModuleAttributeNames.run(code_ast),
       ModulePascalCase.run(code_ast),
       CompilerWarnings.run(code_ast),
+      ExemplarComparison.run(code_ast, exemplar_ast),
       Indentation.run(code_ast, code_as_string)
     ]
     |> List.flatten()
diff --git a/lib/elixir_analyzer/exercise_test/common_checks/exemplar_comparaison.ex b/lib/elixir_analyzer/exercise_test/common_checks/exemplar_comparaison.ex
new file mode 100644
index 00000000..f94a6451
--- /dev/null
+++ b/lib/elixir_analyzer/exercise_test/common_checks/exemplar_comparaison.ex
@@ -0,0 +1,27 @@
+defmodule ElixirAnalyzer.ExerciseTest.CommonChecks.ExemplarComparison do
+  @moduledoc """
+  Compares the solution to the exemplar solution for concept exercises.
+  Ignores practice exercises.
+  """
+
+  alias ElixirAnalyzer.Constants
+  alias ElixirAnalyzer.Comment
+
+  @spec run(Macro.t(), nil | Macro.t()) :: [{:pass | :fail | :skip, %Comment{}}]
+  def run(_ast, nil), do: []
+
+  def run(code_ast, exemplar_ast) do
+    if Macro.to_string(code_ast) == Macro.to_string(exemplar_ast) do
+      [
+        {:pass,
+         %Comment{
+           type: :celebratory,
+           name: Constants.solution_same_as_exemplar(),
+           comment: Constants.solution_same_as_exemplar()
+         }}
+      ]
+    else
+      []
+    end
+  end
+end
diff --git a/lib/elixir_analyzer/submission.ex b/lib/elixir_analyzer/submission.ex
index 083b37ee..18c58579 100644
--- a/lib/elixir_analyzer/submission.ex
+++ b/lib/elixir_analyzer/submission.ex
@@ -29,6 +29,8 @@ defmodule ElixirAnalyzer.Submission do
             path: nil,
             code_path: nil,
             code_file: nil,
+            exemplar_path: nil,
+            exemplar_code: nil,
             code: nil,
             analysis_module: nil
 
@@ -40,6 +42,8 @@ defmodule ElixirAnalyzer.Submission do
           path: String.t(),
           code_path: String.t(),
           code_file: String.t(),
+          exemplar_path: String.t() | nil,
+          exemplar_code: Macro.t() | nil,
           code: String.t(),
           analysis_module: atom()
         }
diff --git a/test/elixir_analyzer/test_suite/bird_count_test.exs b/test/elixir_analyzer/test_suite/bird_count_test.exs
index 401a4bdc..ed9da8e5 100644
--- a/test/elixir_analyzer/test_suite/bird_count_test.exs
+++ b/test/elixir_analyzer/test_suite/bird_count_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.BirdCountTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.BirdCount
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule BirdCount do
       def today([]), do: nil
       def today([head | _]), do: head
diff --git a/test/elixir_analyzer/test_suite/boutique_suggestions_test.exs b/test/elixir_analyzer/test_suite/boutique_suggestions_test.exs
index 2bd14b85..166f5264 100644
--- a/test/elixir_analyzer/test_suite/boutique_suggestions_test.exs
+++ b/test/elixir_analyzer/test_suite/boutique_suggestions_test.exs
@@ -2,8 +2,8 @@ defmodule ElixirAnalyzer.ExerciseTest.BoutiqueSuggestionsTest do
   use ElixirAnalyzer.ExerciseTestCase,
     exercise_test_module: ElixirAnalyzer.TestSuite.BoutiqueSuggestions
 
-  test_exercise_analysis "correct solutions",
-    comments: [] do
+  test_exercise_analysis "example solution",
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule BoutiqueSuggestions do
         def get_combinations(tops, bottoms, options \\ []) do
@@ -18,7 +18,13 @@ defmodule ElixirAnalyzer.ExerciseTest.BoutiqueSuggestionsTest do
             {top, bottom}
           end
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "correct solutions",
+    comments: [] do
+    [
       defmodule BoutiqueSuggestions do
         def get_combinations(tops, bottoms, options \\ []) do
           maximum_price = Keyword.get(options, :maximum_price, 100.00)
diff --git a/test/elixir_analyzer/test_suite/chesboard_test.exs b/test/elixir_analyzer/test_suite/chesboard_test.exs
index 4350c0fb..1fca7eb8 100644
--- a/test/elixir_analyzer/test_suite/chesboard_test.exs
+++ b/test/elixir_analyzer/test_suite/chesboard_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.ChessboardTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.Chessboard
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule Chessboard do
       def rank_range do
         1..8
diff --git a/test/elixir_analyzer/test_suite/file_sniffer_test.exs b/test/elixir_analyzer/test_suite/file_sniffer_test.exs
index 09f64de0..2686e606 100644
--- a/test/elixir_analyzer/test_suite/file_sniffer_test.exs
+++ b/test/elixir_analyzer/test_suite/file_sniffer_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.FileSnifferTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.FileSniffer
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule FileSniffer do
         def type_from_extension("bmp"), do: "image/bmp"
@@ -33,7 +33,13 @@ defmodule ElixirAnalyzer.ExerciseTest.FileSnifferTest do
             {:error, "Warning, file format and file extension do not match."}
           end
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule FileSniffer do
         def type_from_binary(<<?B, ?M, _::binary>>), do: "image/bmp"
 
diff --git a/test/elixir_analyzer/test_suite/freelancer_rates_test.exs b/test/elixir_analyzer/test_suite/freelancer_rates_test.exs
index cd5f5de3..76c92053 100644
--- a/test/elixir_analyzer/test_suite/freelancer_rates_test.exs
+++ b/test/elixir_analyzer/test_suite/freelancer_rates_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.FreelancerRatesTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.FreelancerRates
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule FreelancerRates do
         def daily_rate(hourly_rate) do
@@ -26,7 +26,13 @@ defmodule ElixirAnalyzer.ExerciseTest.FreelancerRatesTest do
           days_in_budget = budget / daily_rate_after_discount
           Float.floor(days_in_budget, 1)
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule FreelancerRates do
         def daily_rate(hourly_rate) do
           hourly_rate * 8.0
diff --git a/test/elixir_analyzer/test_suite/german_sysadmin_test.exs b/test/elixir_analyzer/test_suite/german_sysadmin_test.exs
index 0eeaea09..9d71d19a 100644
--- a/test/elixir_analyzer/test_suite/german_sysadmin_test.exs
+++ b/test/elixir_analyzer/test_suite/german_sysadmin_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.GermanSysadminTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.GermanSysadmin
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule Username do
       def sanitize('') do
         ''
diff --git a/test/elixir_analyzer/test_suite/guessing_game_test.exs b/test/elixir_analyzer/test_suite/guessing_game_test.exs
index 860be0d1..51e44a82 100644
--- a/test/elixir_analyzer/test_suite/guessing_game_test.exs
+++ b/test/elixir_analyzer/test_suite/guessing_game_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.GuessingGameTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.GuessingGame
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule GuessingGame do
       def compare(secret_number, guess \\ :no_guess)
 
diff --git a/test/elixir_analyzer/test_suite/high_score_test.exs b/test/elixir_analyzer/test_suite/high_score_test.exs
index b407fe59..4ad69cbb 100644
--- a/test/elixir_analyzer/test_suite/high_score_test.exs
+++ b/test/elixir_analyzer/test_suite/high_score_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.HighScoreTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.HighScore
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule HighScore do
         @initial_score 0
@@ -29,7 +29,13 @@ defmodule ElixirAnalyzer.ExerciseTest.HighScoreTest do
         def get_players(scores) do
           Map.keys(scores)
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule HighScore do
         @initial_score 0
 
diff --git a/test/elixir_analyzer/test_suite/lasagna_test.exs b/test/elixir_analyzer/test_suite/lasagna_test.exs
index 18de1d5e..42777450 100644
--- a/test/elixir_analyzer/test_suite/lasagna_test.exs
+++ b/test/elixir_analyzer/test_suite/lasagna_test.exs
@@ -1,9 +1,11 @@
 defmodule ElixirAnalyzer.TestSuite.LasagnaTest do
+  alias ElixirAnalyzer.Constants
+
   use ElixirAnalyzer.ExerciseTestCase,
     exercise_test_module: ElixirAnalyzer.TestSuite.Lasagna
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [Constants.solution_same_as_exemplar()] do
     defmodule Lasagna do
       def expected_minutes_in_oven() do
         40
diff --git a/test/elixir_analyzer/test_suite/log_level_test.exs b/test/elixir_analyzer/test_suite/log_level_test.exs
index 603abddc..1d34f20c 100644
--- a/test/elixir_analyzer/test_suite/log_level_test.exs
+++ b/test/elixir_analyzer/test_suite/log_level_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.LogLevelTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.LogLevel
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [Constants.solution_same_as_exemplar()] do
     [
       defmodule LogLevel do
         def to_label(level, legacy?) do
diff --git a/test/elixir_analyzer/test_suite/name_badge_test.exs b/test/elixir_analyzer/test_suite/name_badge_test.exs
index 3191843a..d12f3293 100644
--- a/test/elixir_analyzer/test_suite/name_badge_test.exs
+++ b/test/elixir_analyzer/test_suite/name_badge_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.NameBadgeTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.NameBadge
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule NameBadge do
         def print(id, name, department) do
@@ -31,7 +31,13 @@ defmodule ElixirAnalyzer.ExerciseTest.NameBadgeTest do
 
           prefix <> "#{name} - #{String.upcase(department)}"
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule NameBadge do
         def totally_not_if(a, b, c), do: if(a, do: b, else: c)
 
diff --git a/test/elixir_analyzer/test_suite/need_for_speed_test.exs b/test/elixir_analyzer/test_suite/need_for_speed_test.exs
index e78698e8..73b1273f 100644
--- a/test/elixir_analyzer/test_suite/need_for_speed_test.exs
+++ b/test/elixir_analyzer/test_suite/need_for_speed_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.TestSuite.NeedForSpeedTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.NeedForSpeed
 
   test_exercise_analysis "perfect solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     ~S'''
     defmodule NeedForSpeed do
       alias NeedForSpeed.Race
diff --git a/test/elixir_analyzer/test_suite/newsletter_test.exs b/test/elixir_analyzer/test_suite/newsletter_test.exs
index 09fcafb1..7b71a5e7 100644
--- a/test/elixir_analyzer/test_suite/newsletter_test.exs
+++ b/test/elixir_analyzer/test_suite/newsletter_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.NewsletterTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.Newsletter
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule Newsletter do
       def read_emails(path) do
         path
diff --git a/test/elixir_analyzer/test_suite/pacman_rules_test.exs b/test/elixir_analyzer/test_suite/pacman_rules_test.exs
index e68c60d5..830fd218 100644
--- a/test/elixir_analyzer/test_suite/pacman_rules_test.exs
+++ b/test/elixir_analyzer/test_suite/pacman_rules_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.ExerciseTest.PacmanRulesTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.PacmanRules
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule Rules do
       def eat_ghost?(power_pellet_active, touching_ghost) do
         power_pellet_active and touching_ghost
diff --git a/test/elixir_analyzer/test_suite/rpg_character_sheet_test.exs b/test/elixir_analyzer/test_suite/rpg_character_sheet_test.exs
index 59b5ea48..ccd0405f 100644
--- a/test/elixir_analyzer/test_suite/rpg_character_sheet_test.exs
+++ b/test/elixir_analyzer/test_suite/rpg_character_sheet_test.exs
@@ -5,7 +5,7 @@ defmodule ElixirAnalyzer.TestSuite.RpgCharacterSheetTest do
   alias ElixirAnalyzer.Constants
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule RPG.CharacterSheet do
         def welcome() do
@@ -42,7 +42,13 @@ defmodule ElixirAnalyzer.TestSuite.RpgCharacterSheetTest do
 
           IO.inspect(character, label: "Your character")
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule RPG.CharacterSheet do
         def welcome() do
           IO.puts("Welcome! Let's fill out your character sheet together.")
diff --git a/test/elixir_analyzer/test_suite/rpn_calculator_output_test.exs b/test/elixir_analyzer/test_suite/rpn_calculator_output_test.exs
index aef0c7bb..027ce4c0 100644
--- a/test/elixir_analyzer/test_suite/rpn_calculator_output_test.exs
+++ b/test/elixir_analyzer/test_suite/rpn_calculator_output_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.TestSuite.RpnCalculatorOutputTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.RpnCalculatorOutput
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     [
       defmodule RPNCalculator.Output do
         def write(resource, filename, equation) do
@@ -19,7 +19,13 @@ defmodule ElixirAnalyzer.TestSuite.RpnCalculatorOutputTest do
             resource.close(file)
           end
         end
-      end,
+      end
+    ]
+  end
+
+  test_exercise_analysis "other solutions",
+    comments: [] do
+    [
       defmodule RPNCalculator.Output do
         def write(my_resource, my_filename, my_equation) do
           {:ok, file} = my_resource.open(my_filename)
diff --git a/test/elixir_analyzer/test_suite/take_a_number_test.exs b/test/elixir_analyzer/test_suite/take_a_number_test.exs
index c265d1af..9ea9e0fc 100644
--- a/test/elixir_analyzer/test_suite/take_a_number_test.exs
+++ b/test/elixir_analyzer/test_suite/take_a_number_test.exs
@@ -3,7 +3,7 @@ defmodule ElixirAnalyzer.TestSuite.TakeANumberTest do
     exercise_test_module: ElixirAnalyzer.TestSuite.TakeANumber
 
   test_exercise_analysis "example solution",
-    comments: [] do
+    comments: [ElixirAnalyzer.Constants.solution_same_as_exemplar()] do
     defmodule TakeANumber do
       def start() do
         spawn(fn -> loop(0) end)
diff --git a/test/elixir_analyzer_test.exs b/test/elixir_analyzer_test.exs
index e8daa5c6..0d980c51 100644
--- a/test/elixir_analyzer_test.exs
+++ b/test/elixir_analyzer_test.exs
@@ -6,10 +6,9 @@ defmodule ElixirAnalyzerTest do
 
   alias ElixirAnalyzer.Submission
 
-  describe "ElixirAnalyzer" do
+  describe "ElixirAnalyzer for practice exercise" do
     @options [puts_summary: false, write_results: false]
 
-    # @tag :pending
     test "solution with no comments" do
       exercise = "two-fer"
       path = "./test_data/two_fer/perfect_solution/"
@@ -22,7 +21,6 @@ defmodule ElixirAnalyzerTest do
       assert Submission.to_json(analyzed_exercise) == String.trim(expected_output)
     end
 
-    # @tag :pending
     test "referred solution with comments" do
       exercise = "two-fer"
       path = "./test_data/two_fer/imperfect_solution/"
@@ -34,7 +32,6 @@ defmodule ElixirAnalyzerTest do
       assert Submission.to_json(analyzed_exercise) == expected_output
     end
 
-    # @tag :pending
     test "error solution" do
       exercise = "two-fer"
       path = "./test_data/two_fer/error_solution/"
@@ -77,6 +74,60 @@ defmodule ElixirAnalyzerTest do
     end
   end
 
+  describe "ElixirAnalyzer for concept exercise" do
+    @options [puts_summary: false, write_results: false]
+
+    test "perfect solution" do
+      exercise = "lasagna"
+      path = "./test_data/lasagna/perfect_solution/"
+      analyzed_exercise = ElixirAnalyzer.analyze_exercise(exercise, path, path, @options)
+
+      expected_output =
+        "{\"comments\":[{\"comment\":\"elixir.solution.same_as_exemplar\",\"type\":\"celebratory\"}],\"summary\":\"🎉\"}"
+
+      assert Submission.to_json(analyzed_exercise) == String.trim(expected_output)
+    end
+
+    test "failing solution with comments" do
+      exercise = "lasagna"
+      path = "./test_data/lasagna/failing_solution/"
+      analyzed_exercise = ElixirAnalyzer.analyze_exercise(exercise, path, path, @options)
+
+      expected_output =
+        "{\"comments\":[{\"comment\":\"elixir.lasagna.function_reuse\",\"type\":\"actionable\"}],\"summary\":\"Check the comments for some code suggestions. 📣\"}"
+
+      assert Submission.to_json(analyzed_exercise) == expected_output
+    end
+
+    test "solution with missing exemplar" do
+      exercise = "lasagna"
+      path = "./test_data/lasagna/missing_exemplar/"
+
+      assert capture_log(fn ->
+               analyzed_exercise = ElixirAnalyzer.analyze_exercise(exercise, path, path, @options)
+
+               expected_output =
+                 "{\"comments\":[],\"summary\":\"Submission analyzed. No automated suggestions found.\"}"
+
+               assert Submission.to_json(analyzed_exercise) == String.trim(expected_output)
+             end) =~ "Exemplar file not found. Reason: enoent"
+    end
+
+    test "solution with parsing error for incomplete exemplar" do
+      exercise = "lasagna"
+      path = "./test_data/lasagna/wrong_exemplar/"
+
+      assert capture_log(fn ->
+               analyzed_exercise = ElixirAnalyzer.analyze_exercise(exercise, path, path, @options)
+
+               expected_output =
+                 "{\"comments\":[],\"summary\":\"Submission analyzed. No automated suggestions found.\"}"
+
+               assert Submission.to_json(analyzed_exercise) == String.trim(expected_output)
+             end) =~ "Exemplar file could not be parsed."
+    end
+  end
+
   describe "config" do
     test "every available exercise test suite assigned to an exercise slug in the config" do
       {:ok, modules} = :application.get_key(:elixir_analyzer, :modules)
diff --git a/test/support/exercise_test_case.ex b/test/support/exercise_test_case.ex
index f25e383b..92dac74c 100644
--- a/test/support/exercise_test_case.ex
+++ b/test/support/exercise_test_case.ex
@@ -12,11 +12,15 @@ defmodule ElixirAnalyzer.ExerciseTestCase do
   use ExUnit.CaseTemplate
 
   @dialyzer no_match: {:assert_comments, 3}
+  @exercise_config Application.compile_env(:elixir_analyzer, :exercise_config)
+  @concept_exercice_path "elixir/exercises/concept"
+  @meta_config ".meta/config.json"
 
   using opts do
     quote do
       @exercise_test_module unquote(opts)[:exercise_test_module]
       @unsorted_comments unquote(opts)[:unsorted_comments]
+      @exemplar_code ElixirAnalyzer.ExerciseTestCase.find_exemplar_code(@exercise_test_module)
       require ElixirAnalyzer.ExerciseTestCase
       import ElixirAnalyzer.ExerciseTestCase
       alias ElixirAnalyzer.Constants
@@ -94,7 +98,7 @@ defmodule ElixirAnalyzer.ExerciseTestCase do
             analysis_module: ""
           }
 
-          result = @exercise_test_module.analyze(empty_submission, unquote(code))
+          result = @exercise_test_module.analyze(empty_submission, unquote(code), @exemplar_code)
 
           comments =
             result.comments
@@ -151,4 +155,24 @@ defmodule ElixirAnalyzer.ExerciseTestCase do
   def assert_comments(_, _, _) do
     :noop
   end
+
+  # Return the exemplar AST for concept exercises, or nil for pracices exercises and other tests
+  def find_exemplar_code(test_module) do
+    with {slug, _test_module} <-
+           Enum.find(@exercise_config, &match?({_, %{analyzer_module: ^test_module}}, &1)),
+         {:ok, config_file} <-
+           Path.join([@concept_exercice_path, slug, @meta_config]) |> File.read() do
+      get_exemplar_ast!(config_file, slug)
+    else
+      _ -> nil
+    end
+  end
+
+  defp get_exemplar_ast!(config_file_path, slug) do
+    %{"files" => %{"exemplar" => [path]}} = Jason.decode!(config_file_path)
+
+    Path.join([@concept_exercice_path, slug, path])
+    |> File.read!()
+    |> Code.string_to_quoted!()
+  end
 end
diff --git a/test_data/lasagna/failing_solution/.formatter.exs b/test_data/lasagna/failing_solution/.formatter.exs
new file mode 100644
index 00000000..d2cda26e
--- /dev/null
+++ b/test_data/lasagna/failing_solution/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/test_data/lasagna/failing_solution/.gitignore b/test_data/lasagna/failing_solution/.gitignore
new file mode 100644
index 00000000..682b719e
--- /dev/null
+++ b/test_data/lasagna/failing_solution/.gitignore
@@ -0,0 +1,24 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+basics-*.tar
+
diff --git a/test_data/lasagna/failing_solution/.meta/config.json b/test_data/lasagna/failing_solution/.meta/config.json
new file mode 100644
index 00000000..0f09981f
--- /dev/null
+++ b/test_data/lasagna/failing_solution/.meta/config.json
@@ -0,0 +1,24 @@
+{
+  "blurb": "Learn about the basics of Elixir by following a lasagna recipe.",
+  "authors": [
+    "neenjaw"
+  ],
+  "contributors": [
+    "angelikatyborska"
+  ],
+  "files": {
+    "solution": [
+      "lib/lasagna.ex"
+    ],
+    "test": [
+      "test/lasagna_test.exs"
+    ],
+    "exemplar": [
+      ".meta/exemplar.ex"
+    ]
+  },
+  "forked_from": [
+    "csharp/lucians-luscious-lasagna"
+  ],
+  "language_versions": ">=1.10"
+}
diff --git a/test_data/lasagna/failing_solution/.meta/exemplar.ex b/test_data/lasagna/failing_solution/.meta/exemplar.ex
new file mode 100644
index 00000000..10d7bf38
--- /dev/null
+++ b/test_data/lasagna/failing_solution/.meta/exemplar.ex
@@ -0,0 +1,21 @@
+defmodule Lasagna do
+  def expected_minutes_in_oven() do
+    40
+  end
+
+  def remaining_minutes_in_oven(actual_minutes_in_oven) do
+    expected_minutes_in_oven() - actual_minutes_in_oven
+  end
+
+  def preparation_time_in_minutes(number_of_layers) do
+    number_of_layers * 2
+  end
+
+  def total_time_in_minutes(number_of_layers, actual_minutes_in_oven) do
+    preparation_time_in_minutes(number_of_layers) + actual_minutes_in_oven
+  end
+
+  def alarm() do
+    "Ding!"
+  end
+end
diff --git a/test_data/lasagna/failing_solution/lib/lasagna.ex b/test_data/lasagna/failing_solution/lib/lasagna.ex
new file mode 100644
index 00000000..4361b85f
--- /dev/null
+++ b/test_data/lasagna/failing_solution/lib/lasagna.ex
@@ -0,0 +1,11 @@
+defmodule Lasagna do
+  # TODO: define the 'expected_minutes_in_oven/0' function
+
+  # TODO: define the 'remaining_minutes_in_oven/1' function
+
+  # TODO: define the 'preparation_time_in_minutes/1' function
+
+  # TODO: define the 'total_time_in_minutes/2' function
+
+  # TODO: define the 'alarm/0' function
+end
diff --git a/test_data/lasagna/failing_solution/mix.exs b/test_data/lasagna/failing_solution/mix.exs
new file mode 100644
index 00000000..09705834
--- /dev/null
+++ b/test_data/lasagna/failing_solution/mix.exs
@@ -0,0 +1,28 @@
+defmodule Lasagna.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :lasagna,
+      version: "0.1.0",
+      # elixir: "~> 1.10",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/test_data/lasagna/failing_solution/test/lasagna_test.exs b/test_data/lasagna/failing_solution/test/lasagna_test.exs
new file mode 100644
index 00000000..f562bcfb
--- /dev/null
+++ b/test_data/lasagna/failing_solution/test/lasagna_test.exs
@@ -0,0 +1,39 @@
+defmodule LasagnaTest do
+  use ExUnit.Case
+  doctest Lasagna
+
+  @tag task_id: 1
+  test "expected minutes in oven" do
+    assert Lasagna.expected_minutes_in_oven() === 40
+  end
+
+  @tag task_id: 2
+  test "remaining minutes in oven" do
+    assert Lasagna.remaining_minutes_in_oven(25) === 15
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for one layer" do
+    assert Lasagna.preparation_time_in_minutes(1) === 2
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for multiple layers" do
+    assert Lasagna.preparation_time_in_minutes(4) === 8
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for one layer" do
+    assert Lasagna.total_time_in_minutes(1, 30) === 32
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for multiple layers" do
+    assert Lasagna.total_time_in_minutes(4, 8) === 16
+  end
+
+  @tag task_id: 5
+  test "notification message" do
+    assert Lasagna.alarm() === "Ding!"
+  end
+end
diff --git a/test_data/lasagna/failing_solution/test/test_helper.exs b/test_data/lasagna/failing_solution/test/test_helper.exs
new file mode 100644
index 00000000..e8677a34
--- /dev/null
+++ b/test_data/lasagna/failing_solution/test/test_helper.exs
@@ -0,0 +1,2 @@
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)
diff --git a/test_data/lasagna/missing_exemplar/.formatter.exs b/test_data/lasagna/missing_exemplar/.formatter.exs
new file mode 100644
index 00000000..d2cda26e
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/test_data/lasagna/missing_exemplar/.gitignore b/test_data/lasagna/missing_exemplar/.gitignore
new file mode 100644
index 00000000..682b719e
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/.gitignore
@@ -0,0 +1,24 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+basics-*.tar
+
diff --git a/test_data/lasagna/missing_exemplar/.meta/config.json b/test_data/lasagna/missing_exemplar/.meta/config.json
new file mode 100644
index 00000000..0f09981f
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/.meta/config.json
@@ -0,0 +1,24 @@
+{
+  "blurb": "Learn about the basics of Elixir by following a lasagna recipe.",
+  "authors": [
+    "neenjaw"
+  ],
+  "contributors": [
+    "angelikatyborska"
+  ],
+  "files": {
+    "solution": [
+      "lib/lasagna.ex"
+    ],
+    "test": [
+      "test/lasagna_test.exs"
+    ],
+    "exemplar": [
+      ".meta/exemplar.ex"
+    ]
+  },
+  "forked_from": [
+    "csharp/lucians-luscious-lasagna"
+  ],
+  "language_versions": ">=1.10"
+}
diff --git a/test_data/lasagna/missing_exemplar/lib/lasagna.ex b/test_data/lasagna/missing_exemplar/lib/lasagna.ex
new file mode 100644
index 00000000..10d7bf38
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/lib/lasagna.ex
@@ -0,0 +1,21 @@
+defmodule Lasagna do
+  def expected_minutes_in_oven() do
+    40
+  end
+
+  def remaining_minutes_in_oven(actual_minutes_in_oven) do
+    expected_minutes_in_oven() - actual_minutes_in_oven
+  end
+
+  def preparation_time_in_minutes(number_of_layers) do
+    number_of_layers * 2
+  end
+
+  def total_time_in_minutes(number_of_layers, actual_minutes_in_oven) do
+    preparation_time_in_minutes(number_of_layers) + actual_minutes_in_oven
+  end
+
+  def alarm() do
+    "Ding!"
+  end
+end
diff --git a/test_data/lasagna/missing_exemplar/mix.exs b/test_data/lasagna/missing_exemplar/mix.exs
new file mode 100644
index 00000000..09705834
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/mix.exs
@@ -0,0 +1,28 @@
+defmodule Lasagna.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :lasagna,
+      version: "0.1.0",
+      # elixir: "~> 1.10",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/test_data/lasagna/missing_exemplar/test/lasagna_test.exs b/test_data/lasagna/missing_exemplar/test/lasagna_test.exs
new file mode 100644
index 00000000..f562bcfb
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/test/lasagna_test.exs
@@ -0,0 +1,39 @@
+defmodule LasagnaTest do
+  use ExUnit.Case
+  doctest Lasagna
+
+  @tag task_id: 1
+  test "expected minutes in oven" do
+    assert Lasagna.expected_minutes_in_oven() === 40
+  end
+
+  @tag task_id: 2
+  test "remaining minutes in oven" do
+    assert Lasagna.remaining_minutes_in_oven(25) === 15
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for one layer" do
+    assert Lasagna.preparation_time_in_minutes(1) === 2
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for multiple layers" do
+    assert Lasagna.preparation_time_in_minutes(4) === 8
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for one layer" do
+    assert Lasagna.total_time_in_minutes(1, 30) === 32
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for multiple layers" do
+    assert Lasagna.total_time_in_minutes(4, 8) === 16
+  end
+
+  @tag task_id: 5
+  test "notification message" do
+    assert Lasagna.alarm() === "Ding!"
+  end
+end
diff --git a/test_data/lasagna/missing_exemplar/test/test_helper.exs b/test_data/lasagna/missing_exemplar/test/test_helper.exs
new file mode 100644
index 00000000..e8677a34
--- /dev/null
+++ b/test_data/lasagna/missing_exemplar/test/test_helper.exs
@@ -0,0 +1,2 @@
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)
diff --git a/test_data/lasagna/perfect_solution/.formatter.exs b/test_data/lasagna/perfect_solution/.formatter.exs
new file mode 100644
index 00000000..d2cda26e
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/test_data/lasagna/perfect_solution/.gitignore b/test_data/lasagna/perfect_solution/.gitignore
new file mode 100644
index 00000000..682b719e
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/.gitignore
@@ -0,0 +1,24 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+basics-*.tar
+
diff --git a/test_data/lasagna/perfect_solution/.meta/config.json b/test_data/lasagna/perfect_solution/.meta/config.json
new file mode 100644
index 00000000..0f09981f
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/.meta/config.json
@@ -0,0 +1,24 @@
+{
+  "blurb": "Learn about the basics of Elixir by following a lasagna recipe.",
+  "authors": [
+    "neenjaw"
+  ],
+  "contributors": [
+    "angelikatyborska"
+  ],
+  "files": {
+    "solution": [
+      "lib/lasagna.ex"
+    ],
+    "test": [
+      "test/lasagna_test.exs"
+    ],
+    "exemplar": [
+      ".meta/exemplar.ex"
+    ]
+  },
+  "forked_from": [
+    "csharp/lucians-luscious-lasagna"
+  ],
+  "language_versions": ">=1.10"
+}
diff --git a/test_data/lasagna/perfect_solution/.meta/exemplar.ex b/test_data/lasagna/perfect_solution/.meta/exemplar.ex
new file mode 100644
index 00000000..10d7bf38
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/.meta/exemplar.ex
@@ -0,0 +1,21 @@
+defmodule Lasagna do
+  def expected_minutes_in_oven() do
+    40
+  end
+
+  def remaining_minutes_in_oven(actual_minutes_in_oven) do
+    expected_minutes_in_oven() - actual_minutes_in_oven
+  end
+
+  def preparation_time_in_minutes(number_of_layers) do
+    number_of_layers * 2
+  end
+
+  def total_time_in_minutes(number_of_layers, actual_minutes_in_oven) do
+    preparation_time_in_minutes(number_of_layers) + actual_minutes_in_oven
+  end
+
+  def alarm() do
+    "Ding!"
+  end
+end
diff --git a/test_data/lasagna/perfect_solution/lib/lasagna.ex b/test_data/lasagna/perfect_solution/lib/lasagna.ex
new file mode 100644
index 00000000..10d7bf38
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/lib/lasagna.ex
@@ -0,0 +1,21 @@
+defmodule Lasagna do
+  def expected_minutes_in_oven() do
+    40
+  end
+
+  def remaining_minutes_in_oven(actual_minutes_in_oven) do
+    expected_minutes_in_oven() - actual_minutes_in_oven
+  end
+
+  def preparation_time_in_minutes(number_of_layers) do
+    number_of_layers * 2
+  end
+
+  def total_time_in_minutes(number_of_layers, actual_minutes_in_oven) do
+    preparation_time_in_minutes(number_of_layers) + actual_minutes_in_oven
+  end
+
+  def alarm() do
+    "Ding!"
+  end
+end
diff --git a/test_data/lasagna/perfect_solution/mix.exs b/test_data/lasagna/perfect_solution/mix.exs
new file mode 100644
index 00000000..09705834
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/mix.exs
@@ -0,0 +1,28 @@
+defmodule Lasagna.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :lasagna,
+      version: "0.1.0",
+      # elixir: "~> 1.10",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/test_data/lasagna/perfect_solution/test/lasagna_test.exs b/test_data/lasagna/perfect_solution/test/lasagna_test.exs
new file mode 100644
index 00000000..f562bcfb
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/test/lasagna_test.exs
@@ -0,0 +1,39 @@
+defmodule LasagnaTest do
+  use ExUnit.Case
+  doctest Lasagna
+
+  @tag task_id: 1
+  test "expected minutes in oven" do
+    assert Lasagna.expected_minutes_in_oven() === 40
+  end
+
+  @tag task_id: 2
+  test "remaining minutes in oven" do
+    assert Lasagna.remaining_minutes_in_oven(25) === 15
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for one layer" do
+    assert Lasagna.preparation_time_in_minutes(1) === 2
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for multiple layers" do
+    assert Lasagna.preparation_time_in_minutes(4) === 8
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for one layer" do
+    assert Lasagna.total_time_in_minutes(1, 30) === 32
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for multiple layers" do
+    assert Lasagna.total_time_in_minutes(4, 8) === 16
+  end
+
+  @tag task_id: 5
+  test "notification message" do
+    assert Lasagna.alarm() === "Ding!"
+  end
+end
diff --git a/test_data/lasagna/perfect_solution/test/test_helper.exs b/test_data/lasagna/perfect_solution/test/test_helper.exs
new file mode 100644
index 00000000..e8677a34
--- /dev/null
+++ b/test_data/lasagna/perfect_solution/test/test_helper.exs
@@ -0,0 +1,2 @@
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)
diff --git a/test_data/lasagna/wrong_exemplar/.formatter.exs b/test_data/lasagna/wrong_exemplar/.formatter.exs
new file mode 100644
index 00000000..d2cda26e
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/test_data/lasagna/wrong_exemplar/.gitignore b/test_data/lasagna/wrong_exemplar/.gitignore
new file mode 100644
index 00000000..682b719e
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/.gitignore
@@ -0,0 +1,24 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+basics-*.tar
+
diff --git a/test_data/lasagna/wrong_exemplar/.meta/config.json b/test_data/lasagna/wrong_exemplar/.meta/config.json
new file mode 100644
index 00000000..0f09981f
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/.meta/config.json
@@ -0,0 +1,24 @@
+{
+  "blurb": "Learn about the basics of Elixir by following a lasagna recipe.",
+  "authors": [
+    "neenjaw"
+  ],
+  "contributors": [
+    "angelikatyborska"
+  ],
+  "files": {
+    "solution": [
+      "lib/lasagna.ex"
+    ],
+    "test": [
+      "test/lasagna_test.exs"
+    ],
+    "exemplar": [
+      ".meta/exemplar.ex"
+    ]
+  },
+  "forked_from": [
+    "csharp/lucians-luscious-lasagna"
+  ],
+  "language_versions": ">=1.10"
+}
diff --git a/test_data/lasagna/wrong_exemplar/.meta/exemplar.ex b/test_data/lasagna/wrong_exemplar/.meta/exemplar.ex
new file mode 100644
index 00000000..8aac7980
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/.meta/exemplar.ex
@@ -0,0 +1,3 @@
+defmodule Lasagna do
+
+  def expected_minutes_in_oven() do
diff --git a/test_data/lasagna/wrong_exemplar/lib/lasagna.ex b/test_data/lasagna/wrong_exemplar/lib/lasagna.ex
new file mode 100644
index 00000000..10d7bf38
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/lib/lasagna.ex
@@ -0,0 +1,21 @@
+defmodule Lasagna do
+  def expected_minutes_in_oven() do
+    40
+  end
+
+  def remaining_minutes_in_oven(actual_minutes_in_oven) do
+    expected_minutes_in_oven() - actual_minutes_in_oven
+  end
+
+  def preparation_time_in_minutes(number_of_layers) do
+    number_of_layers * 2
+  end
+
+  def total_time_in_minutes(number_of_layers, actual_minutes_in_oven) do
+    preparation_time_in_minutes(number_of_layers) + actual_minutes_in_oven
+  end
+
+  def alarm() do
+    "Ding!"
+  end
+end
diff --git a/test_data/lasagna/wrong_exemplar/mix.exs b/test_data/lasagna/wrong_exemplar/mix.exs
new file mode 100644
index 00000000..09705834
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/mix.exs
@@ -0,0 +1,28 @@
+defmodule Lasagna.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :lasagna,
+      version: "0.1.0",
+      # elixir: "~> 1.10",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/test_data/lasagna/wrong_exemplar/test/lasagna_test.exs b/test_data/lasagna/wrong_exemplar/test/lasagna_test.exs
new file mode 100644
index 00000000..f562bcfb
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/test/lasagna_test.exs
@@ -0,0 +1,39 @@
+defmodule LasagnaTest do
+  use ExUnit.Case
+  doctest Lasagna
+
+  @tag task_id: 1
+  test "expected minutes in oven" do
+    assert Lasagna.expected_minutes_in_oven() === 40
+  end
+
+  @tag task_id: 2
+  test "remaining minutes in oven" do
+    assert Lasagna.remaining_minutes_in_oven(25) === 15
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for one layer" do
+    assert Lasagna.preparation_time_in_minutes(1) === 2
+  end
+
+  @tag task_id: 3
+  test "preparation time in minutes for multiple layers" do
+    assert Lasagna.preparation_time_in_minutes(4) === 8
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for one layer" do
+    assert Lasagna.total_time_in_minutes(1, 30) === 32
+  end
+
+  @tag task_id: 4
+  test "total time in minutes for multiple layers" do
+    assert Lasagna.total_time_in_minutes(4, 8) === 16
+  end
+
+  @tag task_id: 5
+  test "notification message" do
+    assert Lasagna.alarm() === "Ding!"
+  end
+end
diff --git a/test_data/lasagna/wrong_exemplar/test/test_helper.exs b/test_data/lasagna/wrong_exemplar/test/test_helper.exs
new file mode 100644
index 00000000..e8677a34
--- /dev/null
+++ b/test_data/lasagna/wrong_exemplar/test/test_helper.exs
@@ -0,0 +1,2 @@
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)