117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
// Copyright 2020 The gVisor Authors.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package dockerutil
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"testing"
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"time"
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)
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type testCase struct {
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name string
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pprof Pprof
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expectedFiles []string
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}
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func TestPprof(t *testing.T) {
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// Basepath and expected file names for each type of profile.
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basePath := "/tmp/test/profile"
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block := "block.pprof"
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cpu := "cpu.pprof"
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goprofle := "go.pprof"
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heap := "heap.pprof"
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mutex := "mutex.pprof"
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testCases := []testCase{
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{
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name: "Cpu",
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pprof: Pprof{
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BasePath: basePath,
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CPUProfile: true,
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Duration: 2 * time.Second,
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},
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expectedFiles: []string{cpu},
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},
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{
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name: "All",
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pprof: Pprof{
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BasePath: basePath,
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BlockProfile: true,
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CPUProfile: true,
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HeapProfile: true,
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MutexProfile: true,
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Duration: 2 * time.Second,
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},
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expectedFiles: []string{block, cpu, goprofle, heap, mutex},
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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ctx := context.Background()
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c := MakeContainer(ctx, t)
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// Set basepath to include the container name so there are no conflicts.
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tc.pprof.BasePath = filepath.Join(tc.pprof.BasePath, c.Name)
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c.AddProfile(&tc.pprof)
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func() {
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defer c.CleanUp(ctx)
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// Start a container.
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if err := c.Spawn(ctx, RunOpts{
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Image: "basic/alpine",
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}, "sleep", "1000"); err != nil {
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t.Fatalf("run failed with: %v", err)
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}
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if status, err := c.Status(context.Background()); !status.Running {
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t.Fatalf("container is not yet running: %+v err: %v", status, err)
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}
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// End early if the expected files exist and have data.
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for start := time.Now(); time.Since(start) < tc.pprof.Duration; time.Sleep(500 * time.Millisecond) {
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if err := checkFiles(tc); err == nil {
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break
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}
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}
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}()
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// Check all expected files exist and have data.
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if err := checkFiles(tc); err != nil {
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t.Fatalf(err.Error())
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}
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})
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}
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}
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func checkFiles(tc testCase) error {
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for _, file := range tc.expectedFiles {
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stat, err := os.Stat(filepath.Join(tc.pprof.BasePath, file))
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if err != nil {
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return fmt.Errorf("stat failed with: %v", err)
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} else if stat.Size() < 1 {
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return fmt.Errorf("file not written to: %+v", stat)
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}
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}
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return nil
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}
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func TestMain(m *testing.M) {
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EnsureSupportedDockerVersion()
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os.Exit(m.Run())
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}
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