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// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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.

//go:build !integration
// +build !integration

package readfile

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestIsLine(t *testing.T) {
	for terminator, nl := range lineTerminatorCharacters {
		reader := NewStripNewline(nil, terminator)

		notLine := []byte("This is not a line")
		assert.False(t, reader.isLine(notLine))

		line := append([]byte("This is a line"), nl...)
		assert.True(t, reader.isLine(line))
	}
}

func TestLineEndingChars(t *testing.T) {
	for terminator, nl := range lineTerminatorCharacters {
		reader := NewStripNewline(nil, terminator)

		line := append([]byte("This is a line"), nl...)
		assert.Equal(t, reader.lineEndingFunc(reader, line), len(nl))
	}
}

func TestAutoLineEndingChars(t *testing.T) {
	reader := NewStripNewline(nil, AutoLineTerminator)

	assert.Equal(t, reader.lineEndingFunc(reader, []byte("this is a windows line\r\n")), 2)
	assert.Equal(t, reader.lineEndingFunc(reader, []byte("this is a not windows line\n")), 1)
}
