mirror of
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110 lines
3.6 KiB
Go
110 lines
3.6 KiB
Go
package assertion
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import (
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"fmt"
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"reflect"
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"github.com/onsi/gomega/types"
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)
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type Assertion struct {
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actualInput interface{}
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failWrapper *types.GomegaFailWrapper
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offset int
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extra []interface{}
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}
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func New(actualInput interface{}, failWrapper *types.GomegaFailWrapper, offset int, extra ...interface{}) *Assertion {
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return &Assertion{
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actualInput: actualInput,
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failWrapper: failWrapper,
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offset: offset,
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extra: extra,
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}
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}
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func (assertion *Assertion) Should(matcher types.GomegaMatcher, optionalDescription ...interface{}) bool {
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assertion.failWrapper.TWithHelper.Helper()
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return assertion.vetExtras(optionalDescription...) && assertion.match(matcher, true, optionalDescription...)
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}
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func (assertion *Assertion) ShouldNot(matcher types.GomegaMatcher, optionalDescription ...interface{}) bool {
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assertion.failWrapper.TWithHelper.Helper()
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return assertion.vetExtras(optionalDescription...) && assertion.match(matcher, false, optionalDescription...)
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}
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func (assertion *Assertion) To(matcher types.GomegaMatcher, optionalDescription ...interface{}) bool {
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assertion.failWrapper.TWithHelper.Helper()
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return assertion.vetExtras(optionalDescription...) && assertion.match(matcher, true, optionalDescription...)
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}
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func (assertion *Assertion) ToNot(matcher types.GomegaMatcher, optionalDescription ...interface{}) bool {
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assertion.failWrapper.TWithHelper.Helper()
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return assertion.vetExtras(optionalDescription...) && assertion.match(matcher, false, optionalDescription...)
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}
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func (assertion *Assertion) NotTo(matcher types.GomegaMatcher, optionalDescription ...interface{}) bool {
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assertion.failWrapper.TWithHelper.Helper()
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return assertion.vetExtras(optionalDescription...) && assertion.match(matcher, false, optionalDescription...)
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}
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func (assertion *Assertion) buildDescription(optionalDescription ...interface{}) string {
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switch len(optionalDescription) {
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case 0:
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return ""
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case 1:
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if describe, ok := optionalDescription[0].(func() string); ok {
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return describe() + "\n"
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}
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}
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return fmt.Sprintf(optionalDescription[0].(string), optionalDescription[1:]...) + "\n"
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}
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func (assertion *Assertion) match(matcher types.GomegaMatcher, desiredMatch bool, optionalDescription ...interface{}) bool {
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matches, err := matcher.Match(assertion.actualInput)
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assertion.failWrapper.TWithHelper.Helper()
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if err != nil {
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description := assertion.buildDescription(optionalDescription...)
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assertion.failWrapper.Fail(description+err.Error(), 2+assertion.offset)
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return false
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}
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if matches != desiredMatch {
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var message string
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if desiredMatch {
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message = matcher.FailureMessage(assertion.actualInput)
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} else {
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message = matcher.NegatedFailureMessage(assertion.actualInput)
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}
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description := assertion.buildDescription(optionalDescription...)
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assertion.failWrapper.Fail(description+message, 2+assertion.offset)
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return false
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}
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return true
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}
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func (assertion *Assertion) vetExtras(optionalDescription ...interface{}) bool {
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success, message := vetExtras(assertion.extra)
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if success {
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return true
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}
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description := assertion.buildDescription(optionalDescription...)
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assertion.failWrapper.TWithHelper.Helper()
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assertion.failWrapper.Fail(description+message, 2+assertion.offset)
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return false
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}
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func vetExtras(extras []interface{}) (bool, string) {
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for i, extra := range extras {
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if extra != nil {
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zeroValue := reflect.Zero(reflect.TypeOf(extra)).Interface()
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if !reflect.DeepEqual(zeroValue, extra) {
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message := fmt.Sprintf("Unexpected non-nil/non-zero extra argument at index %d:\n\t<%T>: %#v", i+1, extra, extra)
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return false, message
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}
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}
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}
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return true, ""
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}
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