[MARTIFACT-79] Check session.allProjects for executionRoot, not j…

…ust `session.projects` (#70)

When resuming a multi-module build, the `executionRoot` may not be included in `session.projects`. `session.allProjects` contains all projects in the reactor build.

src/it/compare-resume/invoker.properties

@@ -0,0 +1,23 @@
+# 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.
+
+# initial reference build: install
+invoker.goals.1=clean install
+# second build: verify (could be package, but not install to avoid overriding reference)
+invoker.goals.2=clean verify artifact:compare
+# third build: verify resuming from second module
+invoker.goals.3=clean verify artifact:compare -rf :resume-modA

src/it/compare-resume/modA/pom.xml

@@ -0,0 +1,34 @@
+<?xml version='1.0' encoding='UTF-8'?>
+
+<!--
+  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.
+-->
+
+<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/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.maven.plugins.it</groupId>
+    <artifactId>resume</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>resume-modA</artifactId>
+  <packaging>pom</packaging>
+  <name>resume module A</name>
+</project>

src/it/compare-resume/modB/pom.xml

@@ -0,0 +1,42 @@
+<?xml version='1.0' encoding='UTF-8'?>
+
+<!--
+  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.
+-->
+
+<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/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.maven.plugins.it</groupId>
+    <artifactId>resume</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>resume-modB</artifactId>
+  <packaging>pom</packaging>
+  <name>resume module B</name>
+
+  <dependencies>
+    <dependency>
+    <groupId>org.apache.maven.plugins.it</groupId>
+    <artifactId>resume-modA</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    </dependency>
+  </dependencies>
+</project>

src/it/compare-resume/pom.xml

@@ -0,0 +1,70 @@
+<?xml version='1.0' encoding='UTF-8'?>
+
+<!--
+  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.
+-->
+
+<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/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugins.it</groupId>
+  <artifactId>resume</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <description>An IT verifying compare works when resuming a multi-module build.</description>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <prerequisites>
+    <maven>3.0.5</maven>
+  </prerequisites>
+
+  <distributionManagement>
+    <snapshotRepository>
+      <id>local-snapshots</id>
+      <url>file://${basedir}/target/remote-repo</url>
+      <uniqueVersion>false</uniqueVersion>
+    </snapshotRepository>
+  </distributionManagement>
+
+  <modules>
+    <module>modB</module>
+    <module>modA</module>
+  </modules>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>compare</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

src/main/java/org/apache/maven/plugins/artifact/buildinfo/AbstractBuildinfoMojo.java

@@ -356,7 +356,7 @@ protected Map<Artifact, String> generateBuildinfo(boolean mono) throws MojoExecu
     }
 
     protected MavenProject getExecutionRoot() {
-        for (MavenProject p : session.getProjects()) {
+        for (MavenProject p : session.getAllProjects()) {
             if (p.isExecutionRoot()) {
                 return p;
             }