Factor out into NormalizeLinefeeds; add tests

pkg/utils/utils.go

@@ -63,3 +63,9 @@ func TrimTrailingNewline(str string) string {
 	}
 	return str
 }
+
+func NormalizeLinefeeds(str string) string {
+	str = strings.Replace(str, "\r\n", "\n", -1)
+	str = strings.Replace(str, "\r", "\n", -1)
+	return str
+}

pkg/utils/utils_test.go

@@ -0,0 +1,34 @@
+package utils
+
+import "testing"
+
+var testCases = []struct {
+	Input	 []byte
+	Expected []byte
+}{
+	{
+		// \r\n
+		Input: []byte{97, 115, 100, 102, 13, 10},
+		Expected: []byte{97, 115, 100, 102, 10},
+	},
+	{
+		// \r
+		Input: []byte{97, 115, 100, 102, 13},
+		Expected: []byte{97, 115, 100, 102, 10},
+	},
+	{
+		// \n
+		Input: []byte{97, 115, 100, 102, 10},
+		Expected: []byte{97, 115, 100, 102, 10},
+	},
+
+}
+
+func TestNormalizeLinefeeds(t *testing.T) {
+
+	for _, tc := range testCases {
+		if NormalizeLinefeeds(string(tc.Input)) != string(tc.Expected) {
+			t.Error("Error")
+		}
+	}
+}