drone/git/parser/scanner_test.go

68 lines
1.7 KiB
Go

// Copyright 2023 Harness, Inc.
//
// 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 parser
import (
"bufio"
"bytes"
"testing"
"github.com/stretchr/testify/require"
)
func Test_scannerWithPeekSmoke(t *testing.T) {
scanner := NewScannerWithPeek(
bytes.NewReader([]byte("l1\nl2")),
bufio.ScanLines,
)
out := scanner.Peek()
require.True(t, out)
require.NoError(t, scanner.Err())
require.Equal(t, "l1", string(scanner.Bytes()))
out = scanner.Scan()
require.True(t, out)
require.NoError(t, scanner.Err())
require.Equal(t, "l1", string(scanner.Bytes()))
out = scanner.Scan()
require.True(t, out)
require.NoError(t, scanner.Err())
require.Equal(t, "l2", scanner.Text())
out = scanner.Scan()
require.False(t, out)
require.NoError(t, scanner.Err())
require.Nil(t, scanner.Bytes())
}
func Test_scannerWithPeekDualPeek(t *testing.T) {
scanner := NewScannerWithPeek(
bytes.NewReader([]byte("l1\nl2")),
bufio.ScanLines,
)
out := scanner.Peek()
require.True(t, out)
require.NoError(t, scanner.Err())
require.Equal(t, "l1", string(scanner.Bytes()))
out = scanner.Peek()
require.False(t, out)
require.ErrorIs(t, scanner.Err(), ErrPeekedMoreThanOnce)
require.Nil(t, scanner.Bytes())
}