1 files changed, 77 insertions, 0 deletions
diff --git a/literals_test.go b/literals_test.go
new file mode 100644
index 0000000..15b971d
--- /dev/null
+++ b/literals_test.go
@@ -0,0 +1,77 @@
+package goparsify
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestString(t *testing.T) {
+	parser := StringLit(`"'`)
+	t.Run("test double match", func(t *testing.T) {
+		result, p := runParser(`"hello"`, parser)
+		require.Equal(t, `hello`, result.Token)
+		require.Equal(t, "", p.Get())
+	})
+
+	t.Run("test single match", func(t *testing.T) {
+		result, p := runParser(`"hello"`, parser)
+		require.Equal(t, `hello`, result.Token)
+		require.Equal(t, "", p.Get())
+	})
+
+	t.Run("test nested quotes", func(t *testing.T) {
+		result, p := runParser(`"hello 'world'"`, parser)
+		require.Equal(t, `hello 'world'`, result.Token)
+		require.Equal(t, "", p.Get())
+	})
+
+	t.Run("test non match", func(t *testing.T) {
+		_, p := runParser(`1`, parser)
+		require.Equal(t, `"'`, p.Error.Expected)
+		require.Equal(t, `1`, p.Get())
+	})
+
+	t.Run("test unterminated string", func(t *testing.T) {
+		_, p := runParser(`"hello `, parser)
+		require.Equal(t, `"`, p.Error.Expected)
+		require.Equal(t, `"hello `, p.Get())
+	})
+
+	t.Run("test unmatched quotes", func(t *testing.T) {
+		_, p := runParser(`"hello '`, parser)
+		require.Equal(t, `"`, p.Error.Expected)
+		require.Equal(t, 0, p.Pos)
+	})
+
+	t.Run("test unterminated escape", func(t *testing.T) {
+		_, p := runParser(`"hello \`, parser)
+		require.Equal(t, `"`, p.Error.Expected)
+		require.Equal(t, 0, p.Pos)
+	})
+
+	t.Run("test escaping", func(t *testing.T) {
+		result, p := runParser(`"hello \"world\""`, parser)
+		require.Equal(t, `hello "world"`, result.Token)
+		require.Equal(t, ``, p.Get())
+	})
+
+	t.Run("test escaped unicode", func(t *testing.T) {
+		result, p := runParser(`"hello \ubeef cake"`, parser)
+		require.Equal(t, "", p.Error.Expected)
+		require.Equal(t, "hello \uBEEF cake", result.Token)
+		require.Equal(t, ``, p.Get())
+	})
+
+	t.Run("test invalid escaped unicode", func(t *testing.T) {
+		_, p := runParser(`"hello \ucake"`, parser)
+		require.Equal(t, "offset 9: Expected [a-f0-9]", p.Error.Error())
+		require.Equal(t, 0, p.Pos)
+	})
+
+	t.Run("test incomplete escaped unicode", func(t *testing.T) {
+		_, p := runParser(`"hello \uca"`, parser)
+		require.Equal(t, "offset 9: Expected [a-f0-9]{4}", p.Error.Error())
+		require.Equal(t, 0, p.Pos)
+	})
+}