Avoid relying on global gitconfig in tests

Signed-off-by: Fredrik Sommar <[email protected]>

Author: fsommar

internal/gitutil/gitutil.go

@@ -97,7 +97,10 @@ func (g *GitLocalRunner) RunVerbose(ctx context.Context, command string, args ..
 func (g *GitLocalRunner) run(ctx context.Context, verbose bool, command string, args ...string) (RunResult, error) {
 	const op errors.Op = "gitutil.run"
 
-	fullArgs := append([]string{command}, args...)
+	fullArgs := append(
+		[]string{"-c", "user.name=Kpt", "-c", "[email protected]", command},
+		args...,
+	)
 	cmd := exec.CommandContext(ctx, g.gitPath, fullArgs...)
 	cmd.Dir = g.Dir
 	// Disable git prompting the user for credentials.

internal/testutil/testutil.go

@@ -732,7 +732,14 @@ func replaceData(repo, data string) error {
 }
 
 func commit(repo, message string) (string, error) {
-	cmd := exec.Command("git", "commit", "-m", message, "--allow-empty")
+	cmd := exec.Command(
+		"git",
+		"-c", "user.name=Kpt",
+		"-c", "[email protected]",
+		"commit",
+		"-m", message,
+		"--allow-empty",
+	)
 	cmd.Dir = repo
 	stdoutStderr, err := cmd.CombinedOutput()
 	if err != nil {
@@ -749,7 +756,12 @@ func commit(repo, message string) (string, error) {
 }
 
 func tag(repo, tag string) error {
-	cmd := exec.Command("git", "tag", tag)
+	cmd := exec.Command(
+		"git",
+		"-c", "user.name=Kpt",
+		"-c", "[email protected]",
+		"tag", tag,
+	)
 	cmd.Dir = repo
 	b, err := cmd.Output()
 	if err != nil {