mirror of
https://github.com/jesseduffield/lazygit.git
synced 2024-12-12 11:15:00 +02:00
378 lines
8.9 KiB
Go
378 lines
8.9 KiB
Go
package gui
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import (
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"testing"
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"github.com/creack/pty"
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"github.com/davecgh/go-spew/spew"
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"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
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"github.com/jesseduffield/lazygit/pkg/secureexec"
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"github.com/stretchr/testify/assert"
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)
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// To run an integration test, e.g. for test 'commit', go:
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// go test pkg/gui/gui_test.go -run /commit
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//
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// To record keypresses for an integration test, pass RECORD_EVENTS=true like so:
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// RECORD_EVENTS=true go test pkg/gui/gui_test.go -run /commit
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//
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// To update a snapshot for an integration test, pass UPDATE_SNAPSHOTS=true
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// UPDATE_SNAPSHOTS=true go test pkg/gui/gui_test.go -run /commit
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//
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// When RECORD_EVENTS is true, updates will be updated automatically
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//
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// integration tests are run in test/integration_test and the final test does
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// not clean up that directory so you can cd into it to see for yourself what
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// happened when a test failed.
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//
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// To run tests in parallel pass `PARALLEL=true` as an env var. Tests are run in parallel
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// on CI, and are run in a pty so you won't be able to see the stdout of the program
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//
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// To override speed, pass e.g. `SPEED=1` as an env var. Otherwise we start each test
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// at a high speed and then drop down to lower speeds upon each failure until finally
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// trying at the original playback speed (speed 1). A speed of 2 represents twice the
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// original playback speed. Speed must be an integer.
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type integrationTest struct {
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Name string `json:"name"`
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Speed int `json:"speed"`
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Description string `json:"description"`
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}
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func loadTests(t *testing.T, testDir string) []*integrationTest {
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paths, err := filepath.Glob(filepath.Join(testDir, "/*/test.json"))
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assert.NoError(t, err)
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tests := make([]*integrationTest, len(paths))
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for i, path := range paths {
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data, err := ioutil.ReadFile(path)
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assert.NoError(t, err)
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test := &integrationTest{}
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err = json.Unmarshal(data, test)
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assert.NoError(t, err)
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test.Name = strings.TrimPrefix(filepath.Dir(path), testDir+"/")
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tests[i] = test
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}
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return tests
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}
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func generateSnapshot(t *testing.T, dir string) string {
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osCommand := oscommands.NewDummyOSCommand()
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_, err := os.Stat(filepath.Join(dir, ".git"))
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if err != nil {
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return "git directory not found"
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}
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snapshot := ""
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statusCmd := fmt.Sprintf(`git -C %s status`, dir)
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statusCmdOutput, err := osCommand.RunCommandWithOutput(statusCmd)
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assert.NoError(t, err)
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snapshot += statusCmdOutput + "\n"
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logCmd := fmt.Sprintf(`git -C %s log --pretty=%%B -p -1`, dir)
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logCmdOutput, err := osCommand.RunCommandWithOutput(logCmd)
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assert.NoError(t, err)
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snapshot += logCmdOutput + "\n"
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err = filepath.Walk(dir, func(path string, f os.FileInfo, err error) error {
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assert.NoError(t, err)
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if f.IsDir() {
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if f.Name() == ".git" {
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return filepath.SkipDir
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}
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return nil
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}
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bytes, err := ioutil.ReadFile(path)
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assert.NoError(t, err)
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snapshot += string(bytes) + "\n"
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return nil
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})
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assert.NoError(t, err)
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return snapshot
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}
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func findOrCreateDir(path string) {
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_, err := os.Stat(path)
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if err != nil {
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if os.IsNotExist(err) {
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err = os.MkdirAll(path, 0777)
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if err != nil {
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panic(err)
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}
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} else {
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panic(err)
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}
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}
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}
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func getTestSpeeds(testStartSpeed int, updateSnapshots bool) []int {
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if updateSnapshots {
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// have to go at original speed if updating snapshots in case we go to fast and create a junk snapshot
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return []int{1}
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}
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speedEnv := os.Getenv("SPEED")
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if speedEnv != "" {
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speed, err := strconv.Atoi(speedEnv)
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if err != nil {
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panic(err)
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}
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return []int{speed}
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}
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// default is 10, 5, 1
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startSpeed := 10
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if testStartSpeed != 0 {
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startSpeed = testStartSpeed
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}
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speeds := []int{startSpeed}
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if startSpeed > 5 {
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speeds = append(speeds, 5)
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}
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speeds = append(speeds, 1)
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return speeds
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}
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func tempLazygitPath() string {
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return filepath.Join("/tmp", "lazygit", "test_lazygit")
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}
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func Test(t *testing.T) {
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rootDir := getRootDirectory()
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err := os.Chdir(rootDir)
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assert.NoError(t, err)
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testDir := filepath.Join(rootDir, "test", "integration")
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osCommand := oscommands.NewDummyOSCommand()
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err = osCommand.RunCommand("go build -o %s", tempLazygitPath())
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assert.NoError(t, err)
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tests := loadTests(t, testDir)
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record := os.Getenv("RECORD_EVENTS") != ""
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updateSnapshots := record || os.Getenv("UPDATE_SNAPSHOTS") != ""
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for _, test := range tests {
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test := test
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t.Run(test.Name, func(t *testing.T) {
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if runInParallel() {
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t.Parallel()
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}
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speeds := getTestSpeeds(test.Speed, updateSnapshots)
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for i, speed := range speeds {
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t.Logf("%s: attempting test at speed %d\n", test.Name, speed)
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testPath := filepath.Join(testDir, test.Name)
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actualDir := filepath.Join(testPath, "actual")
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expectedDir := filepath.Join(testPath, "expected")
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t.Logf("testPath: %s, actualDir: %s, expectedDir: %s", testPath, actualDir, expectedDir)
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findOrCreateDir(testPath)
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prepareIntegrationTestDir(actualDir)
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err := createFixture(testPath, actualDir)
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assert.NoError(t, err)
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runLazygit(t, testPath, rootDir, record, speed)
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if updateSnapshots {
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err = oscommands.CopyDir(actualDir, expectedDir)
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assert.NoError(t, err)
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}
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actual := generateSnapshot(t, actualDir)
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expected := ""
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func() {
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// git refuses to track .git folders in subdirectories so we need to rename it
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// to git_keep after running a test
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defer func() {
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err = os.Rename(
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filepath.Join(expectedDir, ".git"),
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filepath.Join(expectedDir, ".git_keep"),
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)
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assert.NoError(t, err)
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}()
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// ignoring this error because we might not have a .git_keep file here yet.
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_ = os.Rename(
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filepath.Join(expectedDir, ".git_keep"),
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filepath.Join(expectedDir, ".git"),
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)
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expected = generateSnapshot(t, expectedDir)
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}()
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if expected == actual {
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t.Logf("%s: success at speed %d\n", test.Name, speed)
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break
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}
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// if the snapshots and we haven't tried all playback speeds different we'll retry at a slower speed
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if i == len(speeds)-1 {
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assert.Equal(t, expected, actual, fmt.Sprintf("expected:\n%s\nactual:\n%s\n", expected, actual))
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}
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}
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})
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}
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}
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func createFixture(testPath, actualDir string) error {
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osCommand := oscommands.NewDummyOSCommand()
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bashScriptPath := filepath.Join(testPath, "setup.sh")
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cmd := secureexec.Command("bash", bashScriptPath, actualDir)
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if err := osCommand.RunExecutable(cmd); err != nil {
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return err
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}
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return nil
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}
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func getRootDirectory() string {
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path, err := os.Getwd()
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if err != nil {
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panic(err)
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}
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for {
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_, err := os.Stat(filepath.Join(path, ".git"))
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if err == nil {
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return path
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}
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if !os.IsNotExist(err) {
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panic(err)
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}
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path = filepath.Dir(path)
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if path == "/" {
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panic("must run in lazygit folder or child folder")
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}
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}
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}
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func runLazygit(t *testing.T, testPath string, rootDir string, record bool, speed int) {
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osCommand := oscommands.NewDummyOSCommand()
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replayPath := filepath.Join(testPath, "recording.json")
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templateConfigDir := filepath.Join(rootDir, "test", "default_test_config")
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actualDir := filepath.Join(testPath, "actual")
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exists, err := osCommand.FileExists(filepath.Join(testPath, "config"))
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assert.NoError(t, err)
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if exists {
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templateConfigDir = filepath.Join(testPath, "config")
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}
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configDir := filepath.Join(testPath, "used_config")
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err = os.RemoveAll(configDir)
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assert.NoError(t, err)
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err = oscommands.CopyDir(templateConfigDir, configDir)
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assert.NoError(t, err)
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cmdStr := fmt.Sprintf("%s --use-config-dir=%s --path=%s", tempLazygitPath(), configDir, actualDir)
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cmd := osCommand.ExecutableFromString(cmdStr)
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cmd.Env = append(cmd.Env, fmt.Sprintf("REPLAY_SPEED=%d", speed))
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if record {
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cmd.Env = append(
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cmd.Env,
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fmt.Sprintf("RECORD_EVENTS_TO=%s", replayPath),
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)
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} else {
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cmd.Stdout = os.Stdout
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cmd.Stdin = os.Stdin
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cmd.Stderr = os.Stderr
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cmd.Env = append(
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cmd.Env,
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fmt.Sprintf("REPLAY_EVENTS_FROM=%s", replayPath),
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)
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t.Log(spew.Sdump(cmd))
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}
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t.Log("here")
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// if we're on CI we'll need to use a PTY. We can work that out by seeing if the 'TERM' env is defined.
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if runInPTY() {
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t.Log("1")
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cmd.Env = append(cmd.Env, "TERM=xterm")
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t.Log(cmd.Env)
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f, err := pty.StartWithSize(cmd, &pty.Winsize{Rows: 100, Cols: 100})
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assert.NoError(t, err)
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_, _ = io.Copy(ioutil.Discard, f)
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assert.NoError(t, err)
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_ = f.Close()
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} else {
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t.Log("2")
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err := cmd.Run()
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assert.NoError(t, err)
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}
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}
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func runInParallel() bool {
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return os.Getenv("PARALLEL") != ""
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}
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func runInPTY() bool {
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return true
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}
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func prepareIntegrationTestDir(actualDir string) {
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// remove contents of integration test directory
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dir, err := ioutil.ReadDir(actualDir)
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if err != nil {
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if os.IsNotExist(err) {
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err = os.Mkdir(actualDir, 0777)
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if err != nil {
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panic(err)
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}
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} else {
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panic(err)
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}
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}
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for _, d := range dir {
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os.RemoveAll(filepath.Join(actualDir, d.Name()))
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}
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}
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