126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
package parsekit
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// This file contains some tools that are used for writing parsekit tests.
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import (
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"regexp"
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"testing"
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)
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func AssertEqual(t *testing.T, expected interface{}, actual interface{}, forWhat string) {
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if expected != actual {
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t.Errorf(
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"Unexpected value for %s:\nexpected: %q\nactual: %q",
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forWhat, expected, actual)
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}
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}
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func AssertNotEqual(t *testing.T, notExpected interface{}, actual interface{}, forWhat string) {
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if notExpected == actual {
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t.Errorf("Unexpected value for %s: %q", forWhat, actual)
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}
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}
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func AssertTrue(t *testing.T, b bool, assertion string) {
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if !b {
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t.Errorf("Assertion %s is false", assertion)
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}
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}
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type PanicT struct {
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Function func()
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Regexp bool
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Expect string
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}
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func AssertPanics(t *testing.T, testSet []PanicT) {
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for _, test := range testSet {
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AssertPanic(t, test)
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}
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}
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func AssertPanic(t *testing.T, p PanicT) {
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defer func() {
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if r := recover(); r != nil {
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mismatch := false
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if p.Regexp && !regexp.MustCompile(p.Expect).MatchString(r.(string)) {
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mismatch = true
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}
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if !p.Regexp && p.Expect != r.(string) {
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mismatch = true
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}
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if mismatch {
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t.Errorf(
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"Code did panic, but unexpected panic message received:\nexpected: %q\nactual: %q",
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p.Expect, r)
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}
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} else {
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t.Errorf("Function did not panic (expected panic message: %s)", p.Expect)
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}
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}()
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p.Function()
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}
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type TokenHandlerT struct {
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Input string
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TokenHandler TokenHandler
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MustMatch bool
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Expected string
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}
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func AssertTokenHandlers(t *testing.T, testSet []TokenHandlerT) {
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for _, test := range testSet {
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AssertTokenHandler(t, test)
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}
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}
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func AssertTokenHandler(t *testing.T, test TokenHandlerT) {
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result, err := NewTokenizer(test.TokenHandler, "a match").Execute(test.Input)
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if test.MustMatch {
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if err != nil {
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t.Errorf("Test %q failed with error: %s", test.Input, err)
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} else if output := result.String(); output != test.Expected {
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t.Errorf("Test %q failed: not expected output:\nexpected: %q\nactual: %q\n", test.Input, test.Expected, output)
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}
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} else {
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if err == nil {
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t.Errorf("Test %q failed: should not match, but it did", test.Input)
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}
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}
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}
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type TokenMakerT struct {
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Input string
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TokenHandler TokenHandler
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Expected []Token
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}
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func AssertTokenMakers(t *testing.T, testSet []TokenMakerT) {
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for _, test := range testSet {
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AssertTokenMaker(t, test)
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}
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}
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func AssertTokenMaker(t *testing.T, test TokenMakerT) {
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result, err := NewTokenizer(test.TokenHandler, "a match").Execute(test.Input)
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if err != nil {
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t.Errorf("Test %q failed with error: %s", test.Input, err)
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} else {
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if len(result.Tokens()) != len(test.Expected) {
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t.Errorf("Unexpected number of tokens in output:\nexpected: %d\nactual: %d", len(test.Expected), len(result.Tokens()))
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}
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for i, expected := range test.Expected {
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actual := result.Token(i)
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if expected.Type != actual.Type {
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t.Errorf("Unexpected Type in result.Tokens[%d]:\nexpected: (%T) %s\nactual: (%T) %s", i, expected.Type, expected.Type, actual.Type, actual.Type)
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}
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if string(expected.Runes) != string(actual.Runes) {
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t.Errorf("Unexpected Runes in result.Tokens[%d]:\nexpected: %q\nactual: %q", i, expected.Runes, actual.Runes)
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}
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if expected.Value != actual.Value {
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t.Errorf("Unexpected Value in result.Tokens[%d]:\nexpected: (%T) %s\nactual: (%T) %s", i, expected.Value, expected.Value, actual.Value, actual.Value)
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}
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}
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}
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}
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