Add configuration

config_test.go

@@ -0,0 +1,128 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestLoadConfigUsesDefaultsWhenOptionalFileIsMissing(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "missing.toml")
+	got, err := loadConfig(path, false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := defaultConfig()
+	if got.Theme != want.Theme ||
+		got.RefreshInterval.Duration != want.RefreshInterval.Duration ||
+		got.Paths.Scroll != want.Paths.Scroll ||
+		got.Display.FoldResolved != want.Display.FoldResolved {
+		t.Fatalf("defaults = %#v, want %#v", got, want)
+	}
+}
+
+func TestLoadConfigParsesUserSettings(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "config.toml")
+	content := `
+theme = "light"
+refresh_interval = "25s"
+repository = "owner/repo"
+show_all = true
+limit = 75
+endpoint = "https://github.example.com/api/graphql"
+
+[display]
+fold_resolved = false
+thread_list_width_percent = 45
+
+[paths]
+scroll = true
+scroll_interval = "125ms"
+`
+	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	got, err := loadConfig(path, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := validateConfig(got); err != nil {
+		t.Fatal(err)
+	}
+	if got.Theme != "light" || got.RefreshInterval.Duration != 25*time.Second ||
+		got.Repository != "owner/repo" || !got.ShowAll || got.Limit != 75 ||
+		got.Display.FoldResolved || got.Display.ThreadListWidthPercent != 45 ||
+		!got.Paths.Scroll || got.Paths.ScrollInterval.Duration != 125*time.Millisecond {
+		t.Fatalf("config = %#v", got)
+	}
+}
+
+func TestLoadConfigRejectsUnknownSettings(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "config.toml")
+	if err := os.WriteFile(path, []byte("refesh_interval = \"10s\"\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	_, err := loadConfig(path, true)
+	if err == nil || !strings.Contains(err.Error(), "refesh_interval") {
+		t.Fatalf("unknown setting error = %v", err)
+	}
+}
+
+func TestConfigPathHonorsEnvironmentOverride(t *testing.T) {
+	t.Setenv("GH_THREADS_CONFIG", "/tmp/custom-gh-threads.toml")
+	got, err := configPath()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != "/tmp/custom-gh-threads.toml" {
+		t.Fatalf("config path = %q", got)
+	}
+}
+
+func TestExistingConfigPathFallsBackToDotConfig(t *testing.T) {
+	root := t.TempDir()
+	preferred := filepath.Join(root, "Library", "Application Support", "gh-threads", "config.toml")
+	fallback := filepath.Join(root, ".config", "gh-threads", "config.toml")
+	if err := os.MkdirAll(filepath.Dir(fallback), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(fallback, []byte("theme = \"dark\"\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if got := existingConfigPath(preferred, fallback); got != fallback {
+		t.Fatalf("config path = %q, want fallback %q", got, fallback)
+	}
+
+	if err := os.MkdirAll(filepath.Dir(preferred), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(preferred, []byte("theme = \"light\"\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if got := existingConfigPath(preferred, fallback); got != preferred {
+		t.Fatalf("config path = %q, want preferred %q", got, preferred)
+	}
+}
+
+func TestConfigPathHonorsXDGConfigHome(t *testing.T) {
+	t.Setenv("GH_THREADS_CONFIG", "")
+	t.Setenv("XDG_CONFIG_HOME", "/tmp/xdg-config")
+	got, err := configPath()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := "/tmp/xdg-config/gh-threads/config.toml"
+	if got != want {
+		t.Fatalf("config path = %q, want %q", got, want)
+	}
+}
+
+func TestValidateConfigRejectsUnsafeAnimationRate(t *testing.T) {
+	config := defaultConfig()
+	config.Paths.ScrollInterval.Duration = 10 * time.Millisecond
+	if err := validateConfig(config); err == nil {
+		t.Fatal("unsafe path scrolling interval was accepted")
+	}
+}