first commit

test/closer.go

@@ -0,0 +1,60 @@
+package test
+
+import (
+	"errors"
+	"sync"
+	"testing"
+	"time"
+)
+
+var ErrClose = errors.New("some error")
+
+type Closed struct {
+	mu sync.Mutex
+	d  []string
+}
+
+func (c *Closed) TestLen(t *testing.T, exp int) {
+	if len(c.d) != exp {
+		t.Fail()
+	}
+}
+
+func (c *Closed) TestEqual(t *testing.T, exp []string) {
+	if len(c.d) != len(exp) {
+		t.Fail()
+	}
+
+	for i := range exp {
+		if exp[i] != c.d[i] {
+			t.Fail()
+		}
+	}
+}
+
+func (c *Closed) CloseFnc(name string, sleep time.Duration) func() error {
+	return func() error {
+		time.Sleep(sleep)
+		c.mu.Lock()
+		c.d = append(c.d, name)
+		c.mu.Unlock()
+
+		return nil
+	}
+}
+
+func RequireNil(t *testing.T, exp interface{}) {
+	t.Helper()
+
+	if exp != nil {
+		t.Fatalf("expected nil, got %v", exp)
+	}
+}
+
+func RequireError(t *testing.T, exp, target error) {
+	t.Helper()
+
+	if !errors.Is(exp, target) {
+		t.Fatalf("expected %s, got %s", exp, target)
+	}
+}