1 files changed, 63 insertions, 0 deletions
diff --git a/pkg/coroutine/coroutine_test.go b/pkg/coroutine/coroutine_test.go
new file mode 100644
index 0000000..e876ec3
--- /dev/null
+++ b/pkg/coroutine/coroutine_test.go
@@ -0,0 +1,63 @@
+//go:build unit
+
+package coroutine
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"testing"
+	"time"
+
+	"git.sr.ht/~gabrielgio/img/pkg/testkit"
+)
+
+var rError = errors.New("This is a error")
+
+func imediatReturn() (string, error) {
+	return "A string", nil
+}
+
+func imediatErrorReturn() (string, error) {
+	return "", rError
+}
+
+func haltedReturn() (string, error) {
+	time.Sleep(time.Hour)
+	return "", nil
+}
+
+func TestImediatReturn(t *testing.T) {
+	ctx := context.Background()
+	v, err := WrapProcess(ctx, imediatReturn)
+	testkit.TestError(t, "WrapProcess", nil, err)
+	testkit.TestValue(t, "WrapProcess", "A string", v)
+}
+
+func TestImediatErrorReturn(t *testing.T) {
+	ctx := context.Background()
+	v, err := WrapProcess(ctx, imediatErrorReturn)
+	testkit.TestError(t, "WrapProcess", rError, err)
+	testkit.TestValue(t, "WrapProcess", "", v)
+}
+
+func TestHaltedReturn(t *testing.T) {
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+
+	var (
+		err error
+		wg  sync.WaitGroup
+	)
+
+	wg.Add(1)
+	go func(err *error) {
+		defer wg.Done()
+		_, *err = WrapProcess(ctx, haltedReturn)
+	}(&err)
+
+	cancel()
+	wg.Wait()
+
+	testkit.TestError(t, "WrapProcess", context.Canceled, err)
+}