feat: Add IDE hook tests

Author: Dimitrii Lipiridi

plugin-maven/src/test/java/com/diffplug/spotless/maven/IdeHookTest.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2016-2023 DiffPlug
+ *
+ * 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 com.diffplug.spotless.maven;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import com.diffplug.spotless.ProcessRunner;
+
+class IdeHookTest extends MavenIntegrationHarness {
+	private String output, error;
+	private File dirty, clean, diverge, outofbounds;
+
+	@BeforeEach
+	void before() throws IOException {
+		writePomWithFormatSteps("<includes>\n" +
+				"                                <include>DIRTY.md</include>\n" +
+				"                                <include>CLEAN.md</include>\n" +
+				"                            </includes>\n" +
+				"                            <replace>\n" +
+				"                                <name>Greetings to Mars</name>\n" +
+				"                                <search>World</search>\n" +
+				"                                <replacement>Mars</replacement>\n" +
+				"                            </replace>");
+
+		dirty = setFile("DIRTY.md").toContent("World");
+		clean = setFile("CLEAN.md").toContent("Mars");
+		outofbounds = setFile("OUTOFBOUNDS.md").toContent("Mars");
+		;
+	}
+
+	private void runWith(String... arguments) throws IOException, InterruptedException {
+		ProcessRunner.Result result = mavenRunner()
+				.withArguments(arguments)
+				.runNoError();
+
+		this.output = result.stdOutUtf8();
+		this.error = result.stdErrUtf8();
+	}
+
+	@Test
+	void dirty() throws IOException, InterruptedException {
+		runWith("spotless:apply", "--quiet", "-DspotlessIdeHook=\"" + dirty.getAbsolutePath() + "\"", "-DspotlessIdeHookUseStdOut=true");
+		Assertions.assertThat(output).isEqualTo("Mars");
+		Assertions.assertThat(error).startsWith("IS DIRTY");
+	}
+
+	@Test
+	void clean() throws IOException, InterruptedException {
+		runWith("spotless:apply", "--quiet", "-DspotlessIdeHook=" + clean.getAbsolutePath(), "-DspotlessIdeHookUseStdOut=true");
+		Assertions.assertThat(output).isEmpty();
+		Assertions.assertThat(error).startsWith("IS CLEAN");
+	}
+
+	@Test
+	void outofbounds() throws IOException, InterruptedException {
+		runWith("spotless:apply", "--quiet", "-DspotlessIdeHook=" + outofbounds.getAbsolutePath(), "-DspotlessIdeHookUseStdOut=true");
+		Assertions.assertThat(output).isEmpty();
+		Assertions.assertThat(error).isEmpty();
+	}
+
+	@Test
+	void notAbsolute() throws IOException, InterruptedException {
+		runWith("spotless:apply", "--quiet", "-DspotlessIdeHook=\"pom.xml\"", "-DspotlessIdeHookUseStdOut=true");
+		Assertions.assertThat(output).isEmpty();
+		Assertions.assertThat(error).contains("Argument passed to spotlessIdeHook must be an absolute path");
+	}
+}