Function TestTokenizerError

pkg/sql/tokenizer/coverage_enhancement_test.go:100–198

TestTokenizerError tests error creation and formatting functions.

(t *testing.T)

// TestTokenizerError tests error creation and formatting functions.
func TestTokenizerError(t *testing.T) {
	loc := models.Location{
		Line:   2,
		Column: 5,
	}

	t.Run("NewError creates error with location", func(t *testing.T) {
		err := NewError("test error message", loc)
		if err == nil {
			t.Fatal("NewError() returned nil")
		}

		errStr := err.Error()
		if !strings.Contains(errStr, "test error message") {
			t.Errorf("Error message doesn't contain expected text: %s", errStr)
		}
		if !strings.Contains(errStr, "line 2") {
			t.Errorf("Error message doesn't contain line number: %s", errStr)
		}
		if !strings.Contains(errStr, "column 5") {
			t.Errorf("Error message doesn't contain column number: %s", errStr)
		}
	})

	t.Run("ErrorUnexpectedChar creates appropriate error", func(t *testing.T) {
		err := ErrorUnexpectedChar('$', loc)
		if err == nil {
			t.Fatal("ErrorUnexpectedChar() returned nil")
		}

		errStr := err.Error()
		if !strings.Contains(errStr, "$") || !strings.Contains(errStr, "unexpected") {
			t.Errorf("ErrorUnexpectedChar message doesn't mention unexpected char: %s", errStr)
		}
	})

	t.Run("ErrorUnterminatedString creates appropriate error", func(t *testing.T) {
		err := ErrorUnterminatedString(loc)
		if err == nil {
			t.Fatal("ErrorUnterminatedString() returned nil")
		}

		errStr := err.Error()
		if !strings.Contains(errStr, "unterminated") || !strings.Contains(errStr, "string") {
			t.Errorf("ErrorUnterminatedString message doesn't mention unterminated string: %s", errStr)
		}
	})

	t.Run("ErrorInvalidNumber creates appropriate error", func(t *testing.T) {
		err := ErrorInvalidNumber("12.34.56", loc)
		if err == nil {
			t.Fatal("ErrorInvalidNumber() returned nil")
		}

		errStr := err.Error()
		if !strings.Contains(errStr, "12.34.56") || !strings.Contains(errStr, "invalid") {
			t.Errorf("ErrorInvalidNumber message doesn't describe issue: %s", errStr)
		}