package temporal

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestWorkerConfigDefaults(t *testing.T) {
	cfg := WorkerConfig{}

	// Verify defaults are applied in NewWorker
	// (since we modify config in NewWorker, we just verify empty config is accepted)
	assert.Equal(t, "", cfg.TaskQueue)
	assert.Equal(t, 0, cfg.MaxConcurrentActivity)
	assert.Equal(t, 0, cfg.MaxConcurrentWorkflow)
	assert.Equal(t, "", cfg.Identity)
}

func TestRegisterWorkflowWithNilWorker(t *testing.T) {
	err := RegisterWorkflow(nil, func() {})
	assert.Error(t, err)
	assert.Equal(t, "worker is nil", err.Error())
}

func TestRegisterActivityWithNilWorker(t *testing.T) {
	err := RegisterActivity(nil, func() {})
	assert.Error(t, err)
	assert.Equal(t, "worker is nil", err.Error())
}

func TestRunWorkerWithNilWorker(t *testing.T) {
	err := RunWorker(nil)
	assert.Error(t, err)
	assert.Equal(t, "worker is nil", err.Error())
}

func TestStopWorkerWithNilWorker(t *testing.T) {
	// Should not panic
	StopWorker(nil)
}

func TestWorkerConfigCustomValues(t *testing.T) {
	cfg := WorkerConfig{
		TaskQueue:             "custom-queue",
		MaxConcurrentActivity: 20,
		MaxConcurrentWorkflow: 30,
		Identity:              "custom-identity",
	}

	assert.Equal(t, "custom-queue", cfg.TaskQueue)
	assert.Equal(t, 20, cfg.MaxConcurrentActivity)
	assert.Equal(t, 30, cfg.MaxConcurrentWorkflow)
	assert.Equal(t, "custom-identity", cfg.Identity)
}