Add Elixir as a language

Signed-off-by: Kiko Fernandez-Reyes <[email protected]>

checks/raw/fuzzing.go

@@ -85,6 +85,15 @@ var languageFuzzSpecs = map[clients.LanguageName]languageFuzzConfig{
 		Name:        fuzzers.PropertyBasedHaskell,
 		Desc:        propertyBasedDescription("Haskell"),
 	},
+
+	// Fuzz patterns for Elixir based on property-based testing.
+	clients.Elixir: {
+		filePatterns: []string{"*.ex", "*.exs"},
+		// Look for direct imports of PropCheck, and StreamData.
+		funcPattern: `use\s+(PropCheck|ExUnitProperties)`,
+		Name:        fuzzers.PropertyBasedElixir,
+		Desc:        propertyBasedDescription("Elixir"),
+	},
 	// Fuzz patterns for JavaScript and TypeScript based on property-based testing.
 	//
 	// Based on the import of one of these packages:

checks/raw/fuzzing_test.go

@@ -394,6 +394,43 @@ func Test_checkFuzzFunc(t *testing.T) {
 			},
 			fileContent: "import Test.Hspec",
 		},
+		{
+			name:     "Elixir QuickCheck through PropCheck",
+			want:     true,
+			fileName: []string{"Test.exs"},
+			langs: []clients.Language{
+				{
+					Name:     clients.Elixir,
+					NumLines: 50,
+				},
+			},
+			fileContent: "use PropCheck, default_opts: &PropCheck.TestHelpers.config/0",
+		},
+		{
+			name:     "Elixir QuickCheck through StreamData",
+			want:     true,
+			fileName: []string{"Test.exs"},
+			langs: []clients.Language{
+				{
+					Name:     clients.Elixir,
+					NumLines: 50,
+				},
+			},
+			fileContent: "use ExUnitProperties",
+		},
+		{
+			name:     "Elixir with no property-based testing",
+			want:     false,
+			fileName: []string{"NoPropTest.exs"},
+			wantErr:  true,
+			langs: []clients.Language{
+				{
+					Name:     clients.Haskell,
+					NumLines: 50,
+				},
+			},
+			fileContent: "use ExUnit.Case, async: true",
+		},
 		{
 			name:     "JavaScript fast-check via require",
 			want:     true,

clients/languages.go

@@ -80,6 +80,9 @@ const (
 	// Haskell: https://www.haskell.org/
 	Haskell LanguageName = "haskell"
 
+	// Elixir: https://www.elixir.org/
+	Elixir LanguageName = "elixir"
+
 	// Other indicates other languages not listed by the GitHub API.
 	Other LanguageName = "other"
 

internal/fuzzers/fuzzers.go

@@ -21,6 +21,7 @@ const (
 	BuiltInGo               = "GoBuiltInFuzzer"
 	PropertyBasedErlang     = "ErlangPropertyBasedTesting"
 	PropertyBasedHaskell    = "HaskellPropertyBasedTesting"
+	PropertyBasedElixir     = "ElixirPropertyBasedTesting"
 	PropertyBasedJavaScript = "JavaScriptPropertyBasedTesting"
 	PropertyBasedTypeScript = "TypeScriptPropertyBasedTesting"
 	PythonAtheris           = "PythonAtherisFuzzer"