Add source file finder.

editorconfig/source_file_finder_test.go

@@ -0,0 +1,41 @@
+package editorconfig
+
+import (
+	"strconv"
+	"testing"
+)
+
+func TestGetSourceFileExtensions(t *testing.T) {
+	result := GetSourceFileExtensions()
+
+	ExpectExtension := func(ext string) {
+		if !ContainsString(result, ext) {
+			t.Error("Result does not contain extension '" + ext + "'")
+		}
+	}
+
+	ExpectExtension("go")
+	ExpectExtension("java")
+	ExpectExtension("php")
+}
+
+func TestFindSourceFiles(t *testing.T) {
+	result, _ := FindSourceFiles([]string{"tests/a/b/c"})
+
+	if len(result) != 6 {
+		t.Error("Result should have 6 files, but has " + strconv.Itoa(len(result)))
+	}
+
+	ExpectPath := func(path string) {
+		if !ContainsString(result, path) {
+			t.Error("Result does not contain path '" + path + "'")
+		}
+	}
+
+	ExpectPath("tests/a/b/c/.editorconfig")
+	ExpectPath("tests/a/b/c/d/file.go")
+	ExpectPath("tests/a/b/c/d/file.java")
+	ExpectPath("tests/a/b/c/d/file.php")
+	ExpectPath("tests/a/b/c/d/keep-trailing-spaces.txt")
+	ExpectPath("tests/a/b/c/file.java")
+}