test: ✅ add assert_equals function to check two strings are equal

Signed-off-by: Eric Villard <[email protected]>

tests/run.sh

@@ -14,6 +14,36 @@ get_test_files()
     ls "$(test_dir)"/*-test.sh
 }
 
+# Assert two strings are equal
+#
+# Usage:
+#   assert_equals "string 1" "string 2" "message"
+function assert_equals {
+    local string1="$1"
+    local string2="$2"
+    local message="$3"
+    local fails="\u2718"
+    local succeed="\u2714"
+    local result=0
+
+    [ -n "${message}" ] || {
+        message="Assert \e[34m'${string1}'\e[0m equals \e[35m'${string2}'\e[0m."
+    }
+
+    local diff="$(diff  <(echo "${string1}" ) <(echo "${string2}"))"
+
+    if [ -z "${diff}" ]; then
+        echo -e "\e[32m${succeed}\e[0m ${message}"
+    else
+
+        result=1
+        echo -e "\e[31m${fails}\e[0m ${message}"
+        echo -e "\e[2m${diff}\e[22m"
+    fi
+
+    return $result
+}
+
 TESTS=($(get_test_files))
 
 for test in "${TESTS[@]}"; do