feat: bootstrap cli entrypoint with bubble tea and toml config

internal/config/config_test.go

@@ -0,0 +1,75 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+func TestLoadValidConfig(t *testing.T) {
+	path := writeConfig(t, `streamers = [" Alpha ", "#Beta", "alpha", "", "  #Gamma  "]`)
+
+	cfg, err := Load(path)
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+
+	want := []string{"alpha", "beta", "gamma"}
+	if !reflect.DeepEqual(cfg.Streamers, want) {
+		t.Fatalf("Streamers = %#v, want %#v", cfg.Streamers, want)
+	}
+}
+
+func TestLoadRejectsMissingStreamerList(t *testing.T) {
+	path := writeConfig(t, `streamers = []`)
+
+	_, err := Load(path)
+	if err == nil {
+		t.Fatal("Load() error = nil, want error")
+	}
+	if !strings.Contains(err.Error(), "at least one streamer") {
+		t.Fatalf("Load() error = %q, want empty streamer message", err)
+	}
+}
+
+func TestLoadRejectsInvalidTOML(t *testing.T) {
+	path := writeConfig(t, `streamers = [`)
+
+	_, err := Load(path)
+	if err == nil {
+		t.Fatal("Load() error = nil, want error")
+	}
+	if !strings.Contains(err.Error(), "load config") {
+		t.Fatalf("Load() error = %q, want load config context", err)
+	}
+}
+
+func TestDefaultPathUsesCurrentWorkingDirectoryConfig(t *testing.T) {
+	if got := DefaultPath(); got != "config.toml" {
+		t.Fatalf("DefaultPath() = %q, want %q", got, "config.toml")
+	}
+}
+
+func TestLoadRejectsMissingFile(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "missing.toml")
+
+	_, err := Load(path)
+	if err == nil {
+		t.Fatal("Load() error = nil, want error")
+	}
+	if !strings.Contains(err.Error(), "config file not found") {
+		t.Fatalf("Load() error = %q, want missing file context", err)
+	}
+}
+
+func writeConfig(t *testing.T, content string) string {
+	t.Helper()
+
+	path := filepath.Join(t.TempDir(), "config.toml")
+	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+	return path
+}