knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/test/upgrade/execute_failures_test.go (about)

     1  /*
     2  Copyright 2020 The Knative Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package upgrade_test
    18  
    19  import (
    20  	"fmt"
    21  	"io"
    22  	"os"
    23  	"testing"
    24  
    25  	"knative.dev/pkg/test/upgrade"
    26  )
    27  
    28  func TestSuiteExecuteWithFailures(t *testing.T) {
    29  	suite := completeSuite()
    30  	for i, st := range createSteps(suite) {
    31  		for j := range st.ops.ops {
    32  			fp := failurePoint{
    33  				step:    i + 1,
    34  				element: j + 1,
    35  			}
    36  			testSuiteExecuteWithFailingStep(suite, fp, t)
    37  		}
    38  	}
    39  }
    40  
    41  var allTestsFilter = func(_, _ string) (bool, error) { return true, nil }
    42  
    43  func testSuiteExecuteWithFailingStep(suite upgrade.Suite, fp failurePoint, t *testing.T) {
    44  	testName := fmt.Sprintf("FailAt-%d-%d", fp.step, fp.element)
    45  	t.Run(testName, func(t *testing.T) {
    46  		assert := assertions{tb: t}
    47  		var (
    48  			output string
    49  			c      upgrade.Configuration
    50  			buf    fmt.Stringer
    51  		)
    52  		suiteWithFailures := enrichSuiteWithFailures(suite, fp)
    53  		txt := expectedTexts(suiteWithFailures, fp)
    54  		txt.append(upgradeTestRunning, upgradeTestFailure)
    55  
    56  		it := []testing.InternalTest{{
    57  			Name: testName,
    58  			F: func(t *testing.T) {
    59  				c, buf = newConfig(t)
    60  				suiteWithFailures.Execute(c)
    61  			},
    62  		}}
    63  		var ok bool
    64  		testOutput := captureStdOutput(func() {
    65  			ok = testing.RunTests(allTestsFilter, it)
    66  		})
    67  		output = buf.String()
    68  
    69  		if ok {
    70  			t.Fatal("Didn't fail, but should")
    71  		}
    72  
    73  		assert.textContains(output, txt)
    74  		assert.textContains(testOutput, texts{
    75  			elms: []string{
    76  				fmt.Sprintf("--- FAIL: FailAt-%d-%d", fp.step, fp.element),
    77  			},
    78  		})
    79  	})
    80  }
    81  
    82  func captureStdOutput(call func()) string {
    83  	rescueStdout := os.Stdout
    84  	r, w, _ := os.Pipe()
    85  	os.Stdout = w
    86  	defer func() {
    87  		os.Stdout = rescueStdout
    88  	}()
    89  
    90  	call()
    91  
    92  	_ = w.Close()
    93  	out, _ := io.ReadAll(r)
    94  	return string(out)
    95  }