io.spring.initializr.test.generator.SourceCodeAssert.java Source code

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Here is the source code for io.spring.initializr.test.generator.SourceCodeAssert.java

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/*
 * Copyright 2012-2018 the original author or authors.
 *
 * 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 io.spring.initializr.test.generator;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;

import org.springframework.core.io.Resource;
import org.springframework.util.StreamUtils;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Source code assertions.
 *
 * @author Stephane Nicoll
 */
public class SourceCodeAssert {

    private final String name;

    private final String content;

    public SourceCodeAssert(String name, String content) {
        this.name = name;
        this.content = content.replaceAll("\r\n", "\n");
    }

    public SourceCodeAssert equalsTo(Resource expected) {
        try (InputStream stream = expected.getInputStream()) {
            String expectedContent = StreamUtils.copyToString(stream, Charset.forName("UTF-8"));
            assertThat(this.content).describedAs("Content for %s", this.name)
                    .isEqualTo(expectedContent.replaceAll("\r\n", "\n"));
        } catch (IOException e) {
            throw new IllegalStateException("Cannot read file", e);
        }
        return this;
    }

    public SourceCodeAssert hasImports(String... classNames) {
        for (String className : classNames) {
            contains("import " + className);
        }
        return this;
    }

    public SourceCodeAssert doesNotHaveImports(String... classNames) {
        for (String className : classNames) {
            doesNotContain("import " + className);
        }
        return this;
    }

    public SourceCodeAssert contains(String... expressions) {
        assertThat(this.content).describedAs("Content for %s", this.name).contains(expressions);
        return this;
    }

    public SourceCodeAssert doesNotContain(String... expressions) {
        assertThat(this.content).describedAs("Content for %s", this.name).doesNotContain(expressions);
        return this;
    }

}