src/jorphan/src/test/kotlin/org/apache/jorphan/io/TextFileTest.kt

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.
 */

package org.apache.jorphan.io

import java.nio.charset.Charset
import java.nio.charset.StandardCharsets

import org.apache.commons.io.FileUtils

import spock.lang.Specification
import spock.lang.Unroll

@Unroll
class TextFileSpec extends Specification {

    def tmpFile = File.createTempFile("TextFile", ".unittest")
    def tmpPath = tmpFile.getAbsolutePath()

    def setup() {
        tmpFile.deleteOnExit()
    }

    def "getText of empty file is empty string"() {
        given:
            def sut = new TextFile(tmpPath)
        expect:
            sut.getText() == ""
    }

    def "getText returns exact content of file"() {
        given:
            def sut = new TextFile(tmpPath)
            FileUtils.write(tmpFile, content, Charset.defaultCharset())
        expect:
            sut.getText() == content
        where:
            content << ["a\nb\nc", "\"a\nb\nc\n"]
    }

    def "getText returns exact content of file with specific charset"() {
        given:
            def sut = new TextFile(tmpPath, encoding)
            FileUtils.write(tmpFile, content, charset)
        expect:
            sut.getText() == content
        where:
            content     | charset                     | encoding
            "a\nb\nc"   | StandardCharsets.UTF_16     | "UTF_16"
            "a\nb\nc\n" | StandardCharsets.UTF_16     | "UTF_16"
            "a\nb\nc"   | StandardCharsets.ISO_8859_1 | "ISO_8859_1"
            "a\nb\nc\n" | StandardCharsets.ISO_8859_1 | "ISO_8859_1"
    }

    def "setText sets exact content of file"() {
        given:
            def sut = new TextFile(tmpPath)
        when:
            sut.setText(content)
        then:
            sut.getText() == content
        where:
            content << ["a\nb\nc", "\"a\nb\nc\n"]
    }

    def "setText sets exact content of file other charset"() {
        given:
            def sut = new TextFile(tmpPath, encoding)
        when:
            sut.setText(content, encoding)
        then:
            sut.getText(encoding) == content
        where:
            content     | encoding
            "a\nb\nc"   | "UTF_16"
            "a\nb\nc\n" | "UTF_16"
            "a\nb\nc"   | "ISO_8859_1"
            "a\nb\nc\n" | "ISO_8859_1"
    }

    def "getText throws exception with invalid encoding"() {
        given:
            def sut = new TextFile(tmpPath, invalidEncoding)
        when:
            sut.getText()
        then:
            thrown(IllegalArgumentException)
        where:
            invalidEncoding << ["", "invalid", "invalid encoding"]
    }
}