Release v0.2.0

internal/config/config_test.go

@@ -4,6 +4,8 @@ import (
 	"os"
 	"path/filepath"
 	"testing"
+
+	"github.com/adrg/xdg"
 )
 
 func TestLoadValidConfig(t *testing.T) {
@@ -192,6 +194,65 @@ func TestMissingRequiredFields(t *testing.T) {
 	}
 }
 
+func TestLoadUsesNixCacheLoginConfigEnvWhenPathEmpty(t *testing.T) {
+	dir := t.TempDir()
+	cfgFile := filepath.Join(dir, "custom-config.toml")
+
+	content := `
+issuer = "https://id.example.com/realms/test"
+client_id = "nix-cache-server"
+cache_host = "cache.example.com"
+netrc_path = "/tmp/netrc"
+`
+	if err := os.WriteFile(cfgFile, []byte(content), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	t.Setenv(configPathEnvVar, cfgFile)
+	cfg, err := Load("")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if cfg.ClientID != "nix-cache-server" {
+		t.Fatalf("client_id = %q, want %q", cfg.ClientID, "nix-cache-server")
+	}
+}
+
+func TestLoadFallsBackToSystemConfigPath(t *testing.T) {
+	dir := t.TempDir()
+	systemCfg := filepath.Join(dir, "system-config.toml")
+	systemConfigPathOrig := systemConfigPath
+	systemConfigPath = systemCfg
+	defer func() {
+		systemConfigPath = systemConfigPathOrig
+	}()
+
+	content := `
+issuer = "https://id.example.com/realms/test"
+client_id = "nix-cache-server"
+cache_host = "cache.example.com"
+netrc_path = "/tmp/netrc"
+`
+	if err := os.WriteFile(systemCfg, []byte(content), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	t.Setenv(configPathEnvVar, "")
+	origConfigHome := xdg.ConfigHome
+	xdg.ConfigHome = filepath.Join(dir, "xdg-missing")
+	defer func() {
+		xdg.ConfigHome = origConfigHome
+	}()
+
+	cfg, err := Load("")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if cfg.ClientID != "nix-cache-server" {
+		t.Fatalf("client_id = %q, want %q", cfg.ClientID, "nix-cache-server")
+	}
+}
+
 func contains(s, substr string) bool {
 	return len(s) >= len(substr) && searchString(s, substr)
 }