org.dmfs.jems.hamcrest.matchers.procedure.ProcedureMatcher Maven / Gradle / Ivy
/*
* Copyright 2020 dmfs GmbH
*
*
* 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.
*/
package org.dmfs.jems.hamcrest.matchers.procedure;
import org.dmfs.jems.generator.Generator;
import org.dmfs.jems.procedure.Procedure;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;
/**
* A {@link Matcher} to test simple {@link Procedure}s.
*
* // simple case > no mocked Ctor arguments
* assertThat(new Testee("1"), processes(()->arg, equalTo(...)));
*
*/
public final class ProcedureMatcher extends TypeSafeDiagnosingMatcher>
{
private final Generator mArgumentGenerator;
private final Matcher mDelegate;
public static Matcher> processes(Generator argumentGenerator, Matcher delegate)
{
return new ProcedureMatcher<>(argumentGenerator, delegate);
}
public ProcedureMatcher(Generator argumentGenerator, Matcher delegate)
{
mArgumentGenerator = argumentGenerator;
mDelegate = delegate;
}
@Override
protected boolean matchesSafely(Procedure item, Description mismatchDescription)
{
Argument argument = mArgumentGenerator.next();
item.process(argument);
if (!mDelegate.matches(argument))
{
mismatchDescription.appendText("processed argument ");
mDelegate.describeMismatch(argument, mismatchDescription);
return false;
}
return true;
}
@Override
public void describeTo(Description description)
{
description.appendText("processes ")
.appendValue(mArgumentGenerator.next())
.appendText(" to ")
.appendDescriptionOf(mDelegate);
}
}