diff --git a/go.mod b/go.mod
index 9239f0c..7273ffd 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.22.0
 
 require (
 	github.com/gogo/protobuf v1.3.2
+	github.com/stretchr/testify v1.8.4
 	go.temporal.io/api v1.24.0
 	go.temporal.io/sdk v1.25.1
 )
@@ -22,7 +23,6 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/robfig/cron v1.2.0 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect
-	github.com/stretchr/testify v1.8.4 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	golang.org/x/net v0.14.0 // indirect
 	golang.org/x/sys v0.11.0 // indirect
diff --git a/workflow_test.go b/workflow_test.go
new file mode 100644
index 0000000..d25aa6d
--- /dev/null
+++ b/workflow_test.go
@@ -0,0 +1,140 @@
+package tempts
+
+import (
+	"context"
+	"testing"
+
+	"go.temporal.io/sdk/testsuite"
+	"go.temporal.io/sdk/workflow"
+)
+
+// Define test types
+type TestWorkflowParams struct {
+	Input string
+}
+
+type TestWorkflowResult struct {
+	Output string
+}
+
+type TestActivityParams struct {
+	Data string
+}
+
+type TestActivityResult struct {
+	ProcessedData string
+}
+
+// Test the creation and execution of a workflow using tempts
+func TestCreateWorkflow(t *testing.T) {
+	// Create a test queue
+	testQueue := NewQueue("test-queue")
+
+	// Define workflow and activity types
+	workflowType := NewWorkflow[TestWorkflowParams, TestWorkflowResult](testQueue, "TestWorkflow")
+	activityType := NewActivity[TestActivityParams, TestActivityResult](testQueue, "TestActivity")
+
+	// Define workflow implementation
+	workflowImpl := func(ctx workflow.Context, params TestWorkflowParams) (TestWorkflowResult, error) {
+		// Call activity
+		activityResult, err := activityType.Run(ctx, TestActivityParams{Data: params.Input})
+		if err != nil {
+			return TestWorkflowResult{}, err
+		}
+		
+		return TestWorkflowResult{Output: activityResult.ProcessedData}, nil
+	}
+
+	// Define activity implementation
+	activityImpl := func(ctx context.Context, params TestActivityParams) (TestActivityResult, error) {
+		// Simple processing - append text to input
+		return TestActivityResult{ProcessedData: params.Data + " processed"}, nil
+	}
+
+	// Create worker with workflow and activity registrations
+	worker, err := NewWorker(testQueue, []Registerable{
+		workflowType.WithImplementation(workflowImpl),
+		activityType.WithImplementation(activityImpl),
+	})
+	if err != nil {
+		t.Fatalf("Failed to create worker: %v", err)
+	}
+
+	// Set up test environment
+	ts := testsuite.WorkflowTestSuite{}
+	ts.SetDisableRegistrationAliasing(true)
+	env := ts.NewTestWorkflowEnvironment()
+	
+	// Register worker with test environment
+	worker.Register(env)
+
+	// Execute workflow in test environment
+	wf := workflowType.WithImplementation(workflowImpl)
+	result, err := wf.ExecuteInTest(env, TestWorkflowParams{Input: "test-input"})
+	if err != nil {
+		t.Fatalf("Failed to execute workflow: %v", err)
+	}
+
+	// Verify result
+	expected := "test-input processed"
+	if result.Output != expected {
+		t.Errorf("Expected output '%s', got '%s'", expected, result.Output)
+	}
+}
+
+// Test workflow with child workflow
+func TestWorkflowWithChild(t *testing.T) {
+	// Create a test queue
+	testQueue := NewQueue("test-queue-child")
+
+	// Define parent and child workflow types
+	parentWorkflowType := NewWorkflow[TestWorkflowParams, TestWorkflowResult](testQueue, "ParentWorkflow")
+	childWorkflowType := NewWorkflow[TestWorkflowParams, TestWorkflowResult](testQueue, "ChildWorkflow")
+
+	// Define child workflow implementation
+	childWorkflowImpl := func(ctx workflow.Context, params TestWorkflowParams) (TestWorkflowResult, error) {
+		return TestWorkflowResult{Output: "Child: " + params.Input}, nil
+	}
+
+	// Define parent workflow implementation that calls child workflow
+	parentWorkflowImpl := func(ctx workflow.Context, params TestWorkflowParams) (TestWorkflowResult, error) {
+		// Call child workflow
+		childResult, err := childWorkflowType.RunChild(ctx, workflow.ChildWorkflowOptions{}, 
+			TestWorkflowParams{Input: params.Input})
+		if err != nil {
+			return TestWorkflowResult{}, err
+		}
+		
+		return TestWorkflowResult{Output: "Parent processed: " + childResult.Output}, nil
+	}
+
+	// Create worker with workflow registrations
+	worker, err := NewWorker(testQueue, []Registerable{
+		parentWorkflowType.WithImplementation(parentWorkflowImpl),
+		childWorkflowType.WithImplementation(childWorkflowImpl),
+	})
+	if err != nil {
+		t.Fatalf("Failed to create worker: %v", err)
+	}
+
+	// Set up test environment
+	ts := testsuite.WorkflowTestSuite{}
+	ts.SetDisableRegistrationAliasing(true)
+	env := ts.NewTestWorkflowEnvironment()
+	
+	// Register worker with test environment
+	worker.Register(env)
+
+	// Execute parent workflow in test environment
+	parentWf := parentWorkflowType.WithImplementation(parentWorkflowImpl)
+	result, err := parentWf.ExecuteInTest(env, TestWorkflowParams{Input: "nested-test"})
+	if err != nil {
+		t.Fatalf("Failed to execute workflow: %v", err)
+	}
+
+	// Verify result
+	expected := "Parent processed: Child: nested-test"
+	if result.Output != expected {
+		t.Errorf("Expected output '%s', got '%s'", expected, result.Output)
+	}
+}
\ No newline at end of file