diff --git a/pool_test.go b/pool_test.go
index 0387dfa..a313568 100644
--- a/pool_test.go
+++ b/pool_test.go
@@ -681,7 +681,7 @@ func TestPoolStatSuccessfulAcquireCounters(t *testing.T) {
 	stat := pool.Stat()
 	assert.Equal(t, int64(1), stat.AcquireCount())
 	assert.Equal(t, int64(1), stat.EmptyAcquireCount())
-	assert.True(t, stat.AcquireDuration() > 0, "expected stat.AcquireDuration() > 0 but %v", stat.AcquireDuration())
+	assert.Positive(t, stat.AcquireDuration(), "expected stat.AcquireDuration() > 0 but %v", stat.AcquireDuration())
 	assert.Equal(t, stat.EmptyAcquireWaitTime(), stat.AcquireDuration())
 	lastAcquireDuration := stat.AcquireDuration()
 
@@ -692,8 +692,8 @@ func TestPoolStatSuccessfulAcquireCounters(t *testing.T) {
 	stat = pool.Stat()
 	assert.Equal(t, int64(2), stat.AcquireCount())
 	assert.Equal(t, int64(1), stat.EmptyAcquireCount())
-	assert.True(t, stat.AcquireDuration() > lastAcquireDuration)
-	assert.True(t, stat.EmptyAcquireWaitTime() < stat.AcquireDuration())
+	assert.Greater(t, stat.AcquireDuration(), lastAcquireDuration)
+	assert.Less(t, stat.EmptyAcquireWaitTime(), stat.AcquireDuration())
 	lastAcquireDuration = stat.AcquireDuration()
 
 	wg := &sync.WaitGroup{}
@@ -713,8 +713,8 @@ func TestPoolStatSuccessfulAcquireCounters(t *testing.T) {
 	stat = pool.Stat()
 	assert.Equal(t, int64(4), stat.AcquireCount())
 	assert.Equal(t, int64(2), stat.EmptyAcquireCount())
-	assert.True(t, stat.AcquireDuration() > lastAcquireDuration)
-	assert.True(t, stat.EmptyAcquireWaitTime() < stat.AcquireDuration())
+	assert.Greater(t, stat.AcquireDuration(), lastAcquireDuration)
+	assert.Less(t, stat.EmptyAcquireWaitTime(), stat.AcquireDuration())
 	lastAcquireDuration = stat.AcquireDuration()
 }