1 files changed, 32 insertions, 0 deletions
diff --git a/internal/version/version_test.go b/internal/version/version_test.go
new file mode 100644
index 0000000..d2d501b
--- /dev/null
+++ b/internal/version/version_test.go
@@ -0,0 +1,32 @@
+package version
+
+import "testing"
+
+func TestStringDefault(t *testing.T) {
+	orig := Version
+	Version, Commit, Date = "dev", "", ""
+	defer func() { Version = orig }()
+	if got := String("mitmux"); got != "mitmux dev" {
+		t.Errorf("String(%q) = %q, want %q", "mitmux", got, "mitmux dev")
+	}
+}
+
+func TestStringWithCommitAndDate(t *testing.T) {
+	origV, origC, origD := Version, Commit, Date
+	Version, Commit, Date = "1.2.3", "abc1234", "2026-01-02"
+	defer func() { Version, Commit, Date = origV, origC, origD }()
+	want := "mitmuxd 1.2.3 (abc1234, 2026-01-02)"
+	if got := String("mitmuxd"); got != want {
+		t.Errorf("String(%q) = %q, want %q", "mitmuxd", got, want)
+	}
+}
+
+func TestStringCommitOnly(t *testing.T) {
+	origV, origC, origD := Version, Commit, Date
+	Version, Commit, Date = "1.2.3", "abc1234", ""
+	defer func() { Version, Commit, Date = origV, origC, origD }()
+	want := "mitmux 1.2.3 (abc1234)"
+	if got := String("mitmux"); got != want {
+		t.Errorf("String(%q) = %q, want %q", "mitmux", got, want)
+	}
+}