69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
package testhelper
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import (
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"bytes"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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func RequireLog(t *testing.T, dir string, bs *bytes.Buffer) {
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t.Helper()
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// Get the caller pkg used for instruction on rerunning the specific test
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pc, _, _, _ := runtime.Caller(1)
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funcName := runtime.FuncForPC(pc).Name()
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lastSlash := strings.LastIndexByte(funcName, '/')
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if lastSlash < 0 {
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lastSlash = 0
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}
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firstDot := strings.IndexByte(funcName[lastSlash:], '.') + lastSlash
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callerPkg := funcName[:firstDot]
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testNameComponents := strings.Split(t.Name(), "/")
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testBaseName := strings.ToLower(
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strings.ReplaceAll(
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testNameComponents[len(testNameComponents)-1],
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" ",
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"_",
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),
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)
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wantLogFileDir := filepath.Join("testdata", dir)
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wantLogFile := filepath.Join(wantLogFileDir, testBaseName)
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if os.Getenv("HELMFILE_UPDATE_SNAPSHOT") != "" {
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if err := os.MkdirAll(wantLogFileDir, 0755); err != nil {
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t.Fatalf("unable to create directory %q: %v", wantLogFileDir, err)
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}
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if err := os.WriteFile(wantLogFile, bs.Bytes(), 0644); err != nil {
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t.Fatalf("unable to update lint log snapshot: %v", err)
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}
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return
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}
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wantLogData, err := os.ReadFile(wantLogFile)
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if err != nil {
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t.Fatalf(
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"Snapshot file %q does not exist. Rerun this test with `HELMFILE_UPDATE_SNAPSHOT=1 go test -v -run %s %s` to create the snapshot",
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wantLogFile,
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t.Name(),
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callerPkg,
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)
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}
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wantLog := string(wantLogData)
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gotLog := bs.String()
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diff, exists := Diff(wantLog, gotLog, 3)
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if exists {
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t.Errorf("unexpected %s: want (-), got (+): %s", testBaseName, diff)
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t.Errorf(
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"If you think this is due to the snapshot file being outdated, rerun this test with `HELMFILE_UPDATE_SNAPSHOT=1 go test -v -run %s %s` to update the snapshot",
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t.Name(),
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callerPkg,
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)
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}
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}
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