Function TestSpec_PublicAPI_SanitizeIdentifierName

pkg/stringutil/spec_test.go:458–482

TestSpec_PublicAPI_SanitizeIdentifierName validates the documented behavior of SanitizeIdentifierName as described in the package README.md. Specification: "Sanitizes a string for use as a programming-language identifier by replacing invalid characters with underscores and prefixing _ when the iden

(t *testing.T)

// runes beyond the normal identifier rules; if extraAllowed is nil, no extra
// characters are allowed."
func TestSpec_PublicAPI_SanitizeIdentifierName(t *testing.T) {
	t.Run("replaces invalid characters with underscores", func(t *testing.T) {
		result := SanitizeIdentifierName("foo-bar.baz", nil)
		assert.Equal(t, "foo_bar_baz", result,
			"non-identifier characters should be replaced with underscores")
	})

	t.Run("prefixes underscore when starting with digit", func(t *testing.T) {
		result := SanitizeIdentifierName("123name", nil)
		assert.True(t, strings.HasPrefix(result, "_"),
			"result starting with a digit should be prefixed with underscore")
	})

	t.Run("nil extraAllowed permits no extra characters", func(t *testing.T) {
		result := SanitizeIdentifierName("a$b", nil)
		assert.NotContains(t, result, "$",
			"with nil extraAllowed, $ is not preserved")
	})

	t.Run("extraAllowed permits additional runes", func(t *testing.T) {
		result := SanitizeIdentifierName("a$b", func(r rune) bool { return r == '$' })
		assert.Contains(t, result, "$",
			"extraAllowed returning true for $ should preserve $")
	})
}

// TestSpec_PublicAPI_SanitizeParameterName validates the documented behavior of
// SanitizeParameterName as described in the package README.md.