Examples with Query spoon.reflect.visitor.Query used on opensource projects

Example 1 with Query

use of spoon.reflect.visitor.Query in project spoon by INRIA.

the class FilterTest method testFilterChildrenWithoutFilterQueryStep.

@Test
public void testFilterChildrenWithoutFilterQueryStep() throws Exception {
    final Launcher launcher = new Launcher();
    launcher.setArgs(new String[] { "--output-type", "nooutput", "--level", "info" });
    launcher.addInputResource("./src/test/java/spoon/test/filters/testclasses");
    launcher.run();
    // Contract: the filterChildren(null) without Filter returns same results like filter which returns true for each input.
    List<CtElement> list = launcher.getFactory().Package().getRootPackage().filterChildren(null).list();
    Iterator<CtElement> iter = list.iterator();
    launcher.getFactory().Package().getRootPackage().filterChildren(e -> {
        return true;
    }).forEach(real -> {
        // the elements produced by each query are same
        CtElement expected = iter.next();
        if (real != expected) {
            assertEquals(expected, real);
        }
    });
    assertTrue(list.size() > 0);
    assertTrue(iter.hasNext() == false);
}

Example 2 with Query

use of spoon.reflect.visitor.Query in project spoon by INRIA.

the class FilterTest method testEarlyTerminatingQuery.

@Test
public void testEarlyTerminatingQuery() throws Exception {
    // contract: a method first evaluates query until first element is found and then terminates the query
    final Launcher launcher = new Launcher();
    launcher.setArgs(new String[] { "--output-type", "nooutput", "--level", "info" });
    launcher.addInputResource("./src/test/java/spoon/test/filters/testclasses");
    launcher.run();
    class Context {

        boolean wasTerminated = false;

        void failIfTerminated(String place) {
            assertTrue("The " + place + " is called after query was terminated.", wasTerminated == false);
        }
    }
    Context context = new Context();
    CtMethod firstMethod = launcher.getFactory().Package().getRootPackage().filterChildren(e -> {
        context.failIfTerminated("Filter#match of filterChildren");
        return true;
    }).map((CtElement e) -> {
        context.failIfTerminated("Array returning CtFunction#apply of map");
        // send result twice to check that second item is skipped
        return new CtElement[] { e, e };
    }).map((CtElement e) -> {
        context.failIfTerminated("List returning CtFunction#apply of map");
        // send result twice to check that second item is skipped
        return Arrays.asList(new CtElement[] { e, e });
    }).map((CtElement e, CtConsumer<Object> out) -> {
        context.failIfTerminated("CtConsumableFunction#apply of map");
        if (e instanceof CtMethod) {
            // this call should pass and cause termination of the query
            out.accept(e);
            context.wasTerminated = true;
        // let it call out.accept(e); once more to check that next step is not called after query is terminated
        }
        out.accept(e);
    }).map(e -> {
        context.failIfTerminated("CtFunction#apply of map after CtConsumableFunction");
        return e;
    }).first(CtMethod.class);
    assertTrue(firstMethod != null);
    assertTrue(context.wasTerminated);
}

Example 3 with Query

use of spoon.reflect.visitor.Query in project spoon by INRIA.

the class FilterTest method testEmptyQuery.

@Test
public void testEmptyQuery() throws Exception {
    // contract: unbound or empty query
    final Launcher launcher = new Launcher();
    // contract: empty query returns no element
    assertEquals(0, launcher.getFactory().createQuery().list().size());
    assertEquals(0, launcher.getFactory().createQuery((Object) null).list().size());
    // contract: empty query returns no element
    launcher.getFactory().createQuery().forEach(x -> fail());
    launcher.getFactory().createQuery((Object) null).forEach(x -> fail());
    // contract: empty query calls no mapping
    assertEquals(0, launcher.getFactory().createQuery().map(x -> {
        fail();
        return true;
    }).list().size());
    assertEquals(0, launcher.getFactory().createQuery((Object) null).map(x -> {
        fail();
        return true;
    }).list().size());
    // contract: empty query calls no filterChildren
    assertEquals(0, launcher.getFactory().createQuery().filterChildren(x -> {
        fail();
        return true;
    }).list().size());
    assertEquals(0, launcher.getFactory().createQuery((Object) null).filterChildren(x -> {
        fail();
        return true;
    }).list().size());
}