refactor io package

common/buf/reader_test.go

@@ -0,0 +1,28 @@
+package buf_test
+
+import (
+	"bytes"
+	"testing"
+
+	. "v2ray.com/core/common/buf"
+	"v2ray.com/core/testing/assert"
+)
+
+func TestAdaptiveReader(t *testing.T) {
+	assert := assert.On(t)
+
+	rawContent := make([]byte, 1024*1024)
+	buffer := bytes.NewBuffer(rawContent)
+
+	reader := NewReader(buffer)
+	b1, err := reader.Read()
+	assert.Error(err).IsNil()
+	assert.Bool(b1.IsFull()).IsTrue()
+	assert.Int(b1.Len()).Equals(Size)
+	assert.Int(buffer.Len()).Equals(cap(rawContent) - Size)
+
+	b2, err := reader.Read()
+	assert.Error(err).IsNil()
+	assert.Bool(b2.IsFull()).IsTrue()
+	assert.Int(buffer.Len()).Equals(1007616)
+}