s

gitcmd/git_test.go

@@ -0,0 +1,90 @@
+package gitcmd
+
+import (
+	"context"
+	"os"
+	"os/exec"
+	"strings"
+	"testing"
+)
+
+func getEnvValue(envs []string, key string) (string, bool) {
+	prefix := key + "="
+	for _, e := range envs {
+		if v, ok := strings.CutPrefix(e, prefix); ok {
+			return v, true
+		}
+	}
+	return "", false
+}
+
+func TestHomeDir(t *testing.T) {
+
+	t.Setenv("GIT_HOME", "/custom/git-home")
+	if got := HomeDir(); got != "/custom/git-home" {
+		t.Errorf("HomeDir with GIT_HOME = %q, want /custom/git-home", got)
+	}
+
+	old, hadOld := os.LookupEnv("GIT_HOME")
+	os.Unsetenv("GIT_HOME")
+	defer func() {
+		if hadOld {
+			os.Setenv("GIT_HOME", old)
+		}
+	}()
+	if got := HomeDir(); got != os.TempDir() {
+		t.Errorf("HomeDir without GIT_HOME = %q, want %q", got, os.TempDir())
+	}
+}
+
+func TestCommonEnvs(t *testing.T) {
+	envs := CommonEnvs()
+
+	if len(envs) != 5 {
+		t.Errorf("len(CommonEnvs) = %d, want 5", len(envs))
+	}
+	if v, ok := getEnvValue(envs, "HOME"); !ok || v == "" {
+		t.Errorf("HOME missing or empty in %v", envs)
+	}
+	if v, _ := getEnvValue(envs, "HOME"); v != HomeDir() {
+		t.Errorf("HOME = %q, want HomeDir() = %q", v, HomeDir())
+	}
+	for _, want := range []string{
+		"GIT_CONFIG_NOSYSTEM=1",
+		"GIT_NO_REPLACE_OBJECTS=1",
+		"GIT_TERMINAL_PROMPT=0",
+		"LC_ALL=C",
+	} {
+		if _, ok := getEnvValue(envs, strings.SplitN(want, "=", 2)[0]); !ok {
+			t.Errorf("CommonEnvs missing %q in %v", want, envs)
+		}
+	}
+}
+
+func TestVersionContext(t *testing.T) {
+	if _, err := Version(context.Background()); err != nil {
+		t.Fatalf("Version: %v", err)
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	if _, err := Version(ctx); err == nil {
+		t.Error("expected error from cancelled context, got nil")
+	}
+}
+
+func TestExecutableFoundViaLookPath(t *testing.T) {
+	exe, err := Executable()
+	if err != nil {
+		t.Fatalf("Executable: %v", err)
+	}
+	looked, err := exec.LookPath("git")
+	if err != nil {
+		t.Skip("git not on PATH")
+	}
+
+	if exe == "" {
+		t.Error("empty executable path")
+	}
+	_ = looked
+}