github.com/GoogleContainerTools/skaffold@v1.39.18/pkg/skaffold/docker/logger/formatter_test.go (about)

     1  /*
     2  Copyright 2021 The Skaffold 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 logger
    18  
    19  import (
    20  	"bytes"
    21  	"strings"
    22  	"sync"
    23  	"testing"
    24  
    25  	"github.com/GoogleContainerTools/skaffold/pkg/skaffold/docker/tracker"
    26  	"github.com/GoogleContainerTools/skaffold/pkg/skaffold/graph"
    27  	"github.com/GoogleContainerTools/skaffold/pkg/skaffold/output"
    28  	"github.com/GoogleContainerTools/skaffold/testutil"
    29  )
    30  
    31  type mockColorPicker struct{}
    32  
    33  func (m *mockColorPicker) Pick(image string) output.Color {
    34  	return output.Default
    35  }
    36  
    37  func (m *mockColorPicker) AddImage(string) {}
    38  
    39  func TestPrintLogLine(t *testing.T) {
    40  	testutil.Run(t, "verify lines are not intermixed", func(t *testutil.T) {
    41  		var (
    42  			buf bytes.Buffer
    43  			wg  sync.WaitGroup
    44  
    45  			linesPerGroup = 100
    46  			groups        = 5
    47  		)
    48  
    49  		f := NewDockerLogFormatter(&mockColorPicker{}, tracker.NewContainerTracker(), func() bool { return false }, "id")
    50  
    51  		for i := 0; i < groups; i++ {
    52  			wg.Add(1)
    53  
    54  			go func() {
    55  				for i := 0; i < linesPerGroup; i++ {
    56  					f.PrintLine(&buf, "TEXT\n")
    57  				}
    58  				wg.Done()
    59  			}()
    60  		}
    61  		wg.Wait()
    62  
    63  		lines := strings.Split(buf.String(), "\n")
    64  		for i := 0; i < groups*linesPerGroup; i++ {
    65  			t.CheckDeepEqual("TEXT", lines[i])
    66  		}
    67  	})
    68  }
    69  
    70  func TestPrintLogLineFormatted(t *testing.T) {
    71  	testutil.Run(t, "verify lines have correct prefix", func(t *testutil.T) {
    72  		var (
    73  			buf bytes.Buffer
    74  			wg  sync.WaitGroup
    75  
    76  			linesPerGroup = 100
    77  			groups        = 5
    78  		)
    79  		ct := tracker.NewContainerTracker()
    80  		ct.Add(graph.Artifact{ImageName: "image", Tag: "image:tag"}, tracker.Container{ID: "id"})
    81  
    82  		f := NewDockerLogFormatter(&mockColorPicker{}, ct, func() bool { return false }, "id")
    83  
    84  		for i := 0; i < groups; i++ {
    85  			wg.Add(1)
    86  
    87  			go func() {
    88  				for i := 0; i < linesPerGroup; i++ {
    89  					f.PrintLine(&buf, "TEXT\n")
    90  				}
    91  				wg.Done()
    92  			}()
    93  		}
    94  		wg.Wait()
    95  
    96  		lines := strings.Split(buf.String(), "\n")
    97  		for i := 0; i < groups*linesPerGroup; i++ {
    98  			t.CheckDeepEqual("[image] TEXT", lines[i])
    99  		}
   100  	})
   101  }