Maven: Introduce test for plugin output

Use mvn integration-test to run tests

libraries/tools/kotlin-maven-plugin/pom.xml

@@ -45,6 +45,12 @@
             <artifactId>kotlin-jdk-annotations</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-all</artifactId>
+            <version>2.4.4</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -80,6 +86,29 @@
                 </executions>
             </plugin>
 
+            <plugin>
+                <artifactId>maven-invoker-plugin</artifactId>
+                <version>2.0.0</version>
+                <configuration>
+                    <cloneProjectsTo>${project.build.directory}/it</cloneProjectsTo>
+                    <settingsFile>src/it/settings.xml</settingsFile>
+                    <localRepositoryPath>${project.build.directory}/local-repo</localRepositoryPath>
+                    <postBuildHookScript>verify</postBuildHookScript> <!-- no extension required -->
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>integration-test</id>
+                        <goals>
+                            <goal>install</goal>
+                            <goal>run</goal>
+                        </goals>
+
+                        <configuration>
+                            <postBuildHookScript>verify</postBuildHookScript>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 </project>

libraries/tools/kotlin-maven-plugin/src/it/settings.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<settings>
+    <profiles>
+        <profile>
+            <id>it-repo</id>
+            <activation>
+                <activeByDefault>true</activeByDefault>
+            </activation>
+            <repositories>
+                <repository>
+                    <id>local.central</id>
+                    <url>@localRepositoryUrl@</url>
+                    <releases>
+                        <enabled>true</enabled>
+                    </releases>
+                    <snapshots>
+                        <enabled>true</enabled>
+                    </snapshots>
+                </repository>
+            </repositories>
+            <pluginRepositories>
+                <pluginRepository>
+                    <id>local.central</id>
+                    <url>@localRepositoryUrl@</url>
+                    <releases>
+                        <enabled>true</enabled>
+                    </releases>
+                    <snapshots>
+                        <enabled>true</enabled>
+                    </snapshots>
+                </pluginRepository>
+            </pluginRepositories>
+        </profile>
+    </profiles>
+</settings>

libraries/tools/kotlin-maven-plugin/src/it/simple/expected.log

@@ -0,0 +1,9 @@
+[INFO] Kotlin Compiler version @snapshot@
+[INFO] Compiling Kotlin sources from [/src/main/kotlin]
+[INFO] Classes directory is /target/classes
+[INFO] Classpath: /target/classes
+[INFO] Classes directory is /target/classes
+[INFO] Using kotlin annotations from /local-repo/org/jetbrains/kotlin/kotlin-jdk-annotations/0.1-SNAPSHOT/kotlin-jdk-annotations-0.1-SNAPSHOT.jar
+[INFO] PERF: INIT: Compiler initialized in LLL ms
+[INFO] PERF: ANALYZE: 1 files (2 lines) in LLL ms
+[INFO] PERF: GENERATE: 1 files (2 lines) in LLL ms

libraries/tools/kotlin-maven-plugin/src/it/simple/pom.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+        xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>test-group</groupId>
+    <name>test-project</name>
+    <artifactId>test-project</artifactId>
+    <version>1.0</version>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+
+    <build>
+        <sourceDirectory>src/main/kotlin</sourceDirectory>
+
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>0.1-SNAPSHOT</version>
+
+                <executions>
+                    <execution>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

libraries/tools/kotlin-maven-plugin/src/it/simple/src/main/kotlin/yo.kt

@@ -0,0 +1,2 @@
+fun main(vararg args: String) {
+}

libraries/tools/kotlin-maven-plugin/src/it/simple/verify.groovy

@@ -0,0 +1,58 @@
+import java.util.regex.Pattern
+
+class State {
+    def currentPlugin = ""
+    def lines = []
+}
+
+def removePaths(String path, File basedir) {
+    while (basedir.parentFile != null) {
+        path = path.replace(basedir.absolutePath, "").replace(basedir.path, "")
+        basedir = basedir.parentFile
+    }
+
+    return path
+}
+
+def pattern = Pattern.compile(/\[INFO\] --- ([^:]+):.*:\S+ \([^)]+\) @ test-project ---/)
+State state = new File(basedir, "build.log").readLines().inject(new State()) { acc, line ->
+    def m = pattern.matcher(line)
+    if (m.find()) {
+        acc.currentPlugin = m.group(1)
+    } else if (line.startsWith("[INFO] Downloaded:") || line.startsWith("[INFO] Downloading:")) {
+        // ignore line
+    } else if (acc.currentPlugin == "kotlin-maven-plugin") {
+        def filtered = removePaths(line, basedir).replace("\\", "/").replaceAll(/[0-9]+\s*ms/, "LLL ms").trim().replaceAll(/^\[[A-Z]+\]$/, "")
+        if (filtered != "") {
+            acc.lines << filtered
+        }
+    }
+
+    acc
+}
+
+def expectedLog = new File(basedir, "expected.log").readLines().join("\n").trim()
+def actualLog = state.lines.join("\n").trim()
+
+if (expectedLog != actualLog) {
+    println "Expected and actual log differs!"
+    println ""
+
+    println "Actual log:"
+    println actualLog
+    println ""
+    println "Expected log (from ${new File(basedir, "expected.log").absolutePath}):"
+    println expectedLog
+    println ""
+    return false
+} else {
+    println "Log comparison succeeded"
+}
+
+def classes = new File(basedir, "target/classes").listFiles()?.toList() ?: []
+if (classes.isEmpty()) {
+    println "No classes were produced"
+    return false
+}
+
+return true

libraries/tools/kotlin-maven-plugin/src/test/java/org/jetbrains/kotlin/maven/MojoTest.java

@@ -1,26 +0,0 @@
-/*
- * Copyright 2010-2013 JetBrains s.r.o.
- *
- * 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 org.jetbrains.kotlin.maven;
-
-import org.junit.Test;
-
-public class MojoTest {
-    @Test
-    public void dummy() {
-
-    }
-}