feat(coroutine): Added Wait (#85)

Signed-off-by: Flc゛ <[email protected]>

coroutine/wait.go

@@ -0,0 +1,13 @@
+package coroutine
+
+import "sync"
+
+func Wait(fn func()) {
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		fn()
+		wg.Done()
+	}()
+	wg.Wait()
+}

coroutine/wait_test.go

@@ -0,0 +1,19 @@
+package coroutine
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWait(t *testing.T) {
+	var msg string
+
+	Wait(func() {
+		time.Sleep(time.Second)
+		msg = "hello"
+	})
+
+	assert.Equal(t, "hello", msg)
+}