// Copyright 2016 Attic Labs, Inc. All rights reserved.
// Licensed under the Apache License, version 2.0:
// http://www.apache.org/licenses/LICENSE-2.0

package chunks

import (
	"testing"

	"github.com/attic-labs/testify/assert"
)

func TestChunkWriteAfterCloseFails(t *testing.T) {
	assert := assert.New(t)
	input := "abc"
	w := NewChunkWriter()
	_, err := w.Write([]byte(input))
	assert.NoError(err)

	assert.NoError(w.Close())
	assert.Panics(func() { w.Write([]byte(input)) }, "Write() after Close() should barf!")
}

func TestChunkWriteAfterChunkFails(t *testing.T) {
	assert := assert.New(t)
	input := "abc"
	w := NewChunkWriter()
	_, err := w.Write([]byte(input))
	assert.NoError(err)

	_ = w.Chunk()
	assert.Panics(func() { w.Write([]byte(input)) }, "Write() after Chunk() should barf!")
}

func TestChunkChunkCloses(t *testing.T) {
	assert := assert.New(t)
	input := "abc"
	w := NewChunkWriter()
	_, err := w.Write([]byte(input))
	assert.NoError(err)

	w.Chunk()
	assert.Panics(func() { w.Write([]byte(input)) }, "Write() after Close() should barf!")
}
