Attach test tasks to check tasks

Running `check` will trigger both `testWithQrun` and `testWithXrun`.
This might cause issues when one of the simulators is not available. To
combat this, we should only add tasks for the simulator that is present
on `PATH`.

src/functTest/groovy/com/verificationgentleman/gradle/hdvl/svunit/SVUnitPluginSpec.groovy

@@ -368,6 +368,23 @@ class SVUnitPluginSpec extends Specification  {
         dummyLog.text.contains "-f ${testProjectDir.root}/build/full_test_xrun_args.f"
     }
 
+    def "'check' task executes test tasks"() {
+        File testSv = testProjectDir.newFolder('src', 'test', 'sv')
+        new File(testSv, 'dummy_test.sv').createNewFile()
+
+        when:
+        def result = newGradleRunnerWithFakeRunSVunit()
+            .withProjectDir(testProjectDir.root)
+            .withPluginClasspath()
+            .withArguments('check')
+            .build()
+
+        then:
+        result.task(":check").outcome == SUCCESS
+        result.task(":testWithXrun").outcome == SUCCESS
+        result.task(":testWithQrun").outcome == SUCCESS
+    }
+
     def newGradleRunnerWithFakeRunSVunit() {
         def runSVUnitFake = new File(getClass().getResource('/runSVUnit').toURI())
         def env = System.getenv()

src/main/java/com/verificationgentleman/gradle/hdvl/svunit/SVUnitPlugin.java

@@ -32,6 +32,7 @@
 import org.gradle.api.artifacts.Dependency;
 import org.gradle.api.internal.HasConvention;
 import org.gradle.api.reflect.TypeOf;
+import org.gradle.api.tasks.TaskProvider;
 import org.gradle.util.GUtil;
 
 import java.io.File;
@@ -130,7 +131,7 @@ private void configureTestTask(Project project, SourceSet mainSourceSet, SourceS
         GenFullArgsFile genFullTestArgsFile
                 = (GenFullArgsFile) project.getTasks().getByName(testSourceSet.getGenFullArgsFileTaskName(toolName));
         Configuration svUnitRoot = project.getConfigurations().getByName("svUnitRoot");
-        project.getTasks().register(Names.getTestTaskName(toolName), TestTask.class, new Action<TestTask>() {
+        TaskProvider<TestTask> testTask = project.getTasks().register(Names.getTestTaskName(toolName), TestTask.class, new Action<TestTask>() {
             @Override
             public void execute(TestTask testTask) {
                 testTask.setDescription("Runs the unit tests using SVUnit.");
@@ -143,6 +144,7 @@ public void execute(TestTask testTask) {
                 testTask.getExtraArgs().set(toolChains.getRunSVUnit().getArgs());
             }
         });
+        project.getTasks().getByName("check").dependsOn(testTask);
     }
 
 }