internal/testgit: CommitTree should accept identities

1 files changed, 16 insertions, 0 deletions

diff --git a/internal/testgit/command.go b/internal/testgit/command.go
index a7d8651a..dc960877 100644
--- a/internal/testgit/command.go
+++ b/internal/testgit/command.go
@@ -3,6 +3,8 @@ package testgit
 import (
 	"io"
 	"os/exec"
+	"slices"
+	"strings"
 	"testing"
 )
 
@@ -34,3 +36,17 @@ func (repo *Repo) Run(
 
 	return cmd.Output() //nolint:wrapcheck
 }
+
+func setEnv(env []string, key string, value string) []string {
+	prefix := key + "="
+	i := slices.IndexFunc(env, func(entry string) bool {
+		return strings.HasPrefix(entry, prefix)
+	})
+	if i >= 0 {
+		env[i] = prefix + value
+
+		return env
+	}
+
+	return append(env, prefix+value)
+}