4cb4228522
In particular ExpectNoError needed testing, as it was unused so far and not functional in its initial implementation.
93 lines
2.5 KiB
Go
93 lines
2.5 KiB
Go
/*
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Copyright 2024 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ktesting
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import (
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"fmt"
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"regexp"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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// testcase wraps a callback which is called with a TContext that intercepts
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// errors and log output. Those get compared.
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type testcase struct {
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cb func(TContext)
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expectNoFail bool
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expectError string
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expectDuration time.Duration
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expectLog string
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}
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func (tc testcase) run(t *testing.T) {
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bufferT := &logBufferT{T: t}
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tCtx := Init(bufferT)
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var err error
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tCtx, finalize := WithError(tCtx, &err)
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start := time.Now()
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func() {
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defer finalize()
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tc.cb(tCtx)
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}()
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log := bufferT.log.String()
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t.Logf("Log output:\n%s\n", log)
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if tc.expectLog != "" {
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assert.Equal(t, tc.expectLog, normalize(log))
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} else if log != "" {
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t.Error("Expected no log output.")
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}
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duration := time.Since(start)
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assert.InDelta(t, tc.expectDuration.Seconds(), duration.Seconds(), 0.1, fmt.Sprintf("callback invocation duration %s", duration))
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assert.Equal(t, !tc.expectNoFail, tCtx.Failed(), "Failed()")
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if tc.expectError == "" {
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assert.NoError(t, err)
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} else if assert.NotNil(t, err) {
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t.Logf("Result:\n%s", err.Error())
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assert.Equal(t, tc.expectError, normalize(err.Error()))
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}
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}
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// normalize replaces parts of message texts which may vary with constant strings.
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func normalize(msg string) string {
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// duration
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msg = regexp.MustCompile(`[[:digit:]]+\.[[:digit:]]+s`).ReplaceAllString(msg, "x.y s")
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// hex pointer value
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msg = regexp.MustCompile(`0x[[:xdigit:]]+`).ReplaceAllString(msg, "0xXXXX")
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// per-test klog header
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msg = regexp.MustCompile(`[EI][[:digit:]]{4} [[:digit:]]{2}:[[:digit:]]{2}:[[:digit:]]{2}\.[[:digit:]]{6}\]`).ReplaceAllString(msg, "<klog header>:")
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return msg
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}
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type logBufferT struct {
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*testing.T
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log strings.Builder
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}
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func (l *logBufferT) Log(args ...any) {
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l.log.WriteString(fmt.Sprintln(args...))
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}
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func (l *logBufferT) Logf(format string, args ...any) {
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l.log.WriteString(fmt.Sprintf(format, args...))
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l.log.WriteRune('\n')
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}
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