Add an IT

src/it/cd-plugin/.mvn/extensions.xml

@@ -0,0 +1,7 @@
+<extensions xmlns="http://maven.apache.org/EXTENSIONS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/EXTENSIONS/1.0.0 http://maven.apache.org/xsd/core-extensions-1.0.0.xsd">
+  <extension>
+    <groupId>io.jenkins.tools.incrementals</groupId>
+    <artifactId>git-changelist-maven-extension</artifactId>
+    <version>1.6</version>
+  </extension>
+</extensions>

src/it/cd-plugin/.mvn/maven.config

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+-Pconsume-incrementals
+-Pmight-produce-incrementals
+-Dchangelist.format=%d.v%s

src/it/cd-plugin/invoker.properties

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+# Same options as in https://github.com/jenkins-infra/jenkins-maven-cd-action/blob/master/run.sh
+invoker.goals=-Dstyle.color=always -Dset.changelist -Dchangelist=1234.deadbeef5678 -ntp -P-consume-incrementals -Pquick-build clean install

src/it/cd-plugin/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.jenkins-ci.plugins</groupId>
+    <artifactId>plugin</artifactId>
+    <version>@project.version@</version>
+    <relativePath />
+  </parent>
+  <groupId>org.jenkins-ci.plugins.its</groupId>
+  <artifactId>cd-plugin</artifactId>
+  <version>${changelist}</version>
+  <packaging>hpi</packaging>
+  <name>CD plugin</name>
+  <description>CD description</description>
+  <properties>
+    <changelist>999999-SNAPSHOT</changelist>
+    <spotless.check.skip>false</spotless.check.skip>
+  </properties>
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>org.jenkins-ci.plugins</groupId>
+        <artifactId>structs</artifactId>
+        <version>1.5</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+  <dependencies>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins</groupId>
+      <artifactId>structs</artifactId>
+    </dependency>
+  </dependencies>
+  <repositories>
+    <repository>
+      <id>repo.jenkins-ci.org</id>
+      <url>https://repo.jenkins-ci.org/public/</url>
+    </repository>
+  </repositories>
+  <pluginRepositories>
+    <pluginRepository>
+      <id>repo.jenkins-ci.org</id>
+      <url>https://repo.jenkins-ci.org/public/</url>
+    </pluginRepository>
+  </pluginRepositories>
+</project>

src/it/cd-plugin/postbuild.groovy

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+assert new File(basedir, 'target/cd-plugin.hpi').file
+assert new File(basedir, 'target/cd-plugin.jar').file
+
+File installed = new File(basedir, '../../local-repo/org/jenkins-ci/plugins/its/cd-plugin/1234.deadbeef5678/')
+assert new File(installed, 'cd-plugin-1234.deadbeef5678.hpi').file
+
+def targetPom = new File(basedir, 'target/cd-plugin-1234.deadbeef5678.pom')
+assert targetPom.file
+
+def installedPom = new File(installed, 'cd-plugin-1234.deadbeef5678.pom')
+assert installedPom.file
+
+assert installedPom.text.contains("<name>")
+assert installedPom.text.contains("<description>")
+assert installedPom.text.contains("<dependencies>")
+assert installedPom.text.contains("<build>")
+assert installedPom.text.contains("<scm>")
+assert !installedPom.text.contains("<properties>")
+assert !installedPom.text.contains("<dependencyManagement>")
+assert !installedPom.text.contains("<repositories>")
+assert !installedPom.text.contains("<pluginRepositories>")
+
+return true

src/it/cd-plugin/src/main/java/test/SampleRootAction.java

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+package test;
+
+import hudson.Extension;
+import hudson.model.RootAction;
+import org.kohsuke.stapler.HttpResponse;
+import org.kohsuke.stapler.HttpResponses;
+
+@Extension
+public class SampleRootAction implements RootAction {
+    @Override
+    public String getUrlName() {
+        return "sample";
+    }
+
+    @Override
+    public String getIconFileName() {
+        return null;
+    }
+
+    @Override
+    public String getDisplayName() {
+        return null;
+    }
+
+    public HttpResponse doIndex() {
+        return HttpResponses.plainText("sample served");
+    }
+}

src/it/cd-plugin/src/main/resources/index.jelly

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+<?jelly escape-by-default='true'?>
+<div/>

src/it/cd-plugin/src/test/java/test/SampleRootActionTest.java

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+package test;
+
+import static org.junit.Assert.*;
+
+import org.apache.commons.io.IOUtils;
+import org.junit.Rule;
+import org.junit.Test;
+import org.jvnet.hudson.test.JenkinsRule;
+
+public class SampleRootActionTest {
+
+    @Rule
+    public JenkinsRule r = new JenkinsRule();
+
+    @Test
+    public void smokes() throws Exception {
+        assertEquals(
+                IOUtils.toString(SampleRootActionTest.class.getResource("expected.txt")),
+                r.createWebClient()
+                        .goTo("sample", "text/plain")
+                        .getWebResponse()
+                        .getContentAsString()
+                        .trim());
+    }
+}

src/it/cd-plugin/src/test/resources/test/expected.txt

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+sample served