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// Copyright 2018 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package symbol_inject
import (
"bytes"
"strconv"
"testing"
)
func TestCopyAndInject(t *testing.T) {
s := "abcdefghijklmnopqrstuvwxyz"
testCases := []struct {
offset uint64
buf string
expected string
}{
{
offset: 0,
buf: "A",
expected: "Abcdefghijklmnopqrstuvwxyz",
},
{
offset: 1,
buf: "B",
expected: "aBcdefghijklmnopqrstuvwxyz",
},
{
offset: 25,
buf: "Z",
expected: "abcdefghijklmnopqrstuvwxyZ",
},
}
for i, testCase := range testCases {
t.Run(strconv.Itoa(i), func(t *testing.T) {
in := bytes.NewReader([]byte(s))
out := &bytes.Buffer{}
copyAndInject(in, out, testCase.offset, []byte(testCase.buf))
if out.String() != testCase.expected {
t.Errorf("expected %s, got %s", testCase.expected, out.String())
}
})
}
}
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