com.github.droibit.plugin.truth.postfix.example.delegation.FooSubject.java Source code

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Here is the source code for com.github.droibit.plugin.truth.postfix.example.delegation.FooSubject.java

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/*
 * Copyright (c) 2011 Google, Inc.
 *
 * 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 com.github.droibit.plugin.truth.postfix.example.delegation;

import com.google.common.truth.FailureStrategy;
import com.google.common.truth.Subject;
import com.google.common.truth.SubjectFactory;

import java.util.Arrays;

/**
 * A simple example Subject to demonstrate extension.
 *
 * <p>Callers would call {@code assertAbout(foo()).that(foo).matches(bar);}
 * or {@code assertAbout(foo()).that(foo).matchesEither(bar, baz);}
 *
 * @author Christian Gruber (christianedwardgruber@gmail.com)
 */
public class FooSubject extends Subject<FooSubject, Foo> {
    private static final SubjectFactory<FooSubject, Foo> FOO = new SubjectFactory<FooSubject, Foo>() {
        @Override
        public FooSubject getSubject(FailureStrategy fs, Foo target) {
            return new FooSubject(fs, target);
        }
    };

    public static SubjectFactory<FooSubject, Foo> foo() {
        return FOO;
    }

    // Must be public and non-final for generated subclasses (wrappers)
    public FooSubject(FailureStrategy failureStrategy, Foo subject) {
        super(failureStrategy, subject);
    }

    public void matches(Foo expected) {
        if (getSubject().value != expected.value) {
            fail("matches", expected);
        }
    }

    public void matchesAny(Foo... expecteds) {
        for (Foo expected : expecteds) {
            if (getSubject().value == expected.value) {
                return;
            }
        }
        fail("matches", Arrays.asList(expecteds));
    }
}