Create test case for EE baseline warnings due to missing Manifest header

This checks whether no error is produced when both, the
Bundle-RequiredExecutionEvironment header as well as an 'osgi.ee'
element for the Require-Capability are missing from the manifest.

See #1386

apitools/org.eclipse.pde.api.tools.tests/src/org/eclipse/pde/api/tools/builder/tests/compatibility/ProjectTypeContainerTests.java

@@ -21,6 +21,7 @@
 import java.util.List;
 import java.util.Set;
 
+import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jdt.core.ICompilationUnit;
 import org.eclipse.jdt.core.IJavaElement;
@@ -178,6 +179,20 @@ public void testExecutionEnvironment() throws CoreException {
 				new String[] { "JavaSE-17" }, bundleB.getExecutionEnvironments()); //$NON-NLS-1$
 	}
 
+	/**
+	 * Tests whether missing execution environments in the manifest are detected
+	 * correctly.
+	 */
+	public void testNoExecutionEnvironment() throws CoreException {
+		// Verify that the test-project is an existing java project in order to
+		// ensure it gets the EE of the bound JDK injected (because it does not
+		// declare an EE in its Manifest).
+		assertTrue(JavaCore.create(ResourcesPlugin.getWorkspace().getRoot().getProject("bundle.c")).exists()); //$NON-NLS-1$
+		IApiComponent bundleC = getComponent("bundle.c"); //$NON-NLS-1$
+		assertArrayEquals("Expected no EE because none is specified in the Manifest", //$NON-NLS-1$
+				new String[] {}, bundleC.getExecutionEnvironments());
+	}
+
 	/**
 	 * Tests all packages are returned.
 	 */

apitools/org.eclipse.pde.api.tools.tests/test-builder/baseline/bundle.c/.classpath

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+</classpath>

apitools/org.eclipse.pde.api.tools.tests/test-builder/baseline/bundle.c/.project

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>bundle.b</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

apitools/org.eclipse.pde.api.tools.tests/test-builder/baseline/bundle.c/META-INF/MANIFEST.MF

@@ -0,0 +1,6 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: API Tools Tests Plug-in C
+Bundle-SymbolicName: bundle.c
+Bundle-Version: 1.0.0
+Export-Package: test

apitools/org.eclipse.pde.api.tools.tests/test-builder/baseline/bundle.c/build.properties

@@ -0,0 +1,4 @@
+source.. = src/
+output.. = bin/
+bin.includes = META-INF/,\
+               .