Make sure test dependencies are unpacked. Not all versions of nar-mav…

…en-plugin

have the nar-test-unpack goal so we must do it by running the nar-testCompile
goal with an empty <tests> configuration element. This will unpack then compile
nothing.

com.github.sdedwards.m2e-nar/lifecycle-mapping-metadata.xml

@@ -48,6 +48,7 @@
           <goal>nar-process-libraries</goal>
           <goal>nar-testDownload</goal>
           <goal>nar-testUnpack</goal>
+          <goal>nar-test-unpack</goal>
           <goal>nar-testCompile</goal>
           <goal>nar-test</goal>
         </goals>

com.github.sdedwards.m2e-nar/src/com/github/sdedwards/m2e_nar/internal/CProjectConfigurator.java

@@ -187,10 +187,13 @@ public AbstractBuildParticipant getBuildParticipant(
 			return null;
 		} else if ("nar-testDownload".equals(goal)) {
 			return new MojoExecutionBuildParticipant(execution, false, true);
-		} else if ("nar-testUnpack".equals(goal)) {
+		} else if (MavenUtils.isTestUnpack(goal)) {
 			return new NarBuildParticipant(execution, false, true);
 		} else if ("nar-testCompile".equals(goal)) {
-			return null;
+			// Note that this does not actually compile the tests, only unpacks
+			// test dependencies for compatibility with older versions of
+			// nar-maven-plugin
+			return new NarTestCompileBuildParticipant(execution, false, true);
 		} else if ("nar-test".equals(goal)) {
 			return null;
 		}

com.github.sdedwards.m2e-nar/src/com/github/sdedwards/m2e_nar/internal/MavenUtils.java

@@ -71,6 +71,9 @@ public final class MavenUtils {
 	public static String NAR_COMPILE_GOAL = "nar-compile";
 	public static String NAR_TESTCOMPILE_GOAL = "nar-testCompile";
 
+	public static String NAR_TESTUNPACK_GOAL = "nar-testUnpack";
+	public static String NAR_TEST_UNPACK_GOAL = "nar-test-unpack";
+
 	private static final Logger logger = LoggerFactory.getLogger(MavenUtils.class);
 	private static ClassRealm realm = null;
 
@@ -131,7 +134,7 @@ public T call(IMavenExecutionContext context,
 				}, monitor);
 	}
 
-	public static <T extends AbstractMojo> T getConfiguredMojo(MavenSession session,
+	private static <T extends AbstractMojo> T getConfiguredMojo(MavenSession session,
 			MojoExecution mojoExecution, Class<T> asType, Log log) throws CoreException {
 		MojoDescriptor mojoDescriptor = mojoExecution.getMojoDescriptor();
 
@@ -356,4 +359,9 @@ public static List<NarExecution> buildTestCompileNarExecutions(final Configurato
 		}
 		return narExecutions;
 	}
+
+	public static boolean isTestUnpack(String goal) {
+		return NAR_TESTUNPACK_GOAL.equals(goal) || NAR_TEST_UNPACK_GOAL.equals(goal);
+	}
+
 }

com.github.sdedwards.m2e-nar/src/com/github/sdedwards/m2e_nar/internal/NarTestCompileBuildParticipant.java

@@ -0,0 +1,50 @@
+/*
+ * #%L
+ * Maven Integration for Eclipse CDT
+ * %%
+ * Copyright (C) 2014 Stephen Edwards
+ * %%
+ * 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.
+ * #L%
+ */
+package com.github.sdedwards.m2e_nar.internal;
+
+import org.apache.maven.plugin.MojoExecution;
+import org.codehaus.plexus.util.xml.Xpp3Dom;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class NarTestCompileBuildParticipant extends NarBuildParticipant {
+
+	private static final Logger logger = LoggerFactory.getLogger(CProjectConfigurator.class);
+
+	public NarTestCompileBuildParticipant(MojoExecution execution, boolean runOnIncremental, boolean runOnConfiguration) {
+		super(new MojoExecution(execution.getMojoDescriptor(), execution.getExecutionId(), execution.getSource())
+				, runOnIncremental, runOnConfiguration);
+		// Some versions of nar-maven-plugin don't have a nar-test-unpack goal
+		// this means the test artifacts won't be available to us.
+		// What we need to do is run the nar-testCompile goal without any tests its configuration
+		// in order to just unpack.
+		Xpp3Dom configuration = new Xpp3Dom(execution.getConfiguration());
+		logger.info("Configuration before: " + configuration);
+		for (int i = 0; i < configuration.getChildCount(); ++i) {
+			if ("tests".equals(configuration.getChild(i).getName())) {
+				configuration.removeChild(i);
+				break;
+			}
+		}
+		logger.info("Configuration after: " + configuration);
+		getMojoExecution().setConfiguration(configuration);
+	}
+
+}