Merge pull request #30 from airbrake/improve-frame-parser

backtrace: handle empty functions

lib/airbrake-ruby/backtrace.rb

@@ -19,7 +19,7 @@ module Backtrace
       :
       (?<line>\d+)      # Matches '43'
       :in\s
-      `(?<function>.+)' # Matches "`block (3 levels) in <top (required)>'"
+      `(?<function>.*)' # Matches "`block (3 levels) in <top (required)>'"
     \z}x
 
     ##

spec/backtrace_spec.rb

@@ -128,5 +128,23 @@
           to raise_error(Airbrake::Error, /can't parse/)
       end
     end
+
+    context "given a backtrace with an empty function" do
+      let(:bt) do
+        ["/airbrake-ruby/vendor/jruby/1.9/gems/rspec-core-3.4.1/exe/rspec:3:in `'"]
+      end
+
+      let(:ex) { AirbrakeTestError.new.tap { |e| e.set_backtrace(bt) } }
+
+      let(:parsed_backtrace) do
+        [{ file: '/airbrake-ruby/vendor/jruby/1.9/gems/rspec-core-3.4.1/exe/rspec',
+           line: 3,
+           function: '' }]
+      end
+
+      it "returns a properly formatted array of hashes" do
+        expect(described_class.parse(ex)).to eq(parsed_backtrace)
+      end
+    end
   end
 end