FallbackC10NFactoryTest.java

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 * Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
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package com.github.rodionmoiseev.c10n;

import com.github.rodionmoiseev.c10n.annotations.DefaultC10NAnnotations;
import com.github.rodionmoiseev.c10n.annotations.En;
import com.github.rodionmoiseev.c10n.annotations.Ja;
import com.github.rodionmoiseev.c10n.test.utils.RuleUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;

import java.util.Locale;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

public class FallbackC10NFactoryTest {
    @Rule
    public TestRule tmpC10N = RuleUtils.tmpC10NConfiguration();
    @Rule
    public TestRule tmpLocale = RuleUtils.tmpLocale();

    @Test
    public void messageDeclaredInAnnotationIsFallenBackOnto() {
        assertThat(C10N.get(WithFallback.class).message(),
                is("Fallback message"));
    }

    @Test
    public void methodsInSuperInterfacesAreVisible() {
        SubInterfaceWithFallback msg = C10N
                .get(SubInterfaceWithFallback.class);
        assertThat(msg.message(), is("Fallback message"));
        assertThat(msg.msg2(), is("msg2"));
    }

    @Test
    public void methodsWithoutDefaultValuesDefaultToMethodName() {
        NoFallback msg = C10N.get(NoFallback.class);
        assertThat(msg.noDefaultValue(), is("NoFallback.noDefaultValue"));
    }

    @Test
    public void messagesCanTakeArgumentsInMsgFormat() {
        WithArguments msg = C10N.get(WithArguments.class);
        assertThat(msg.greet("World"), is("Hello, World!"));
        assertThat(msg.noDefaultValue("value", "value2"),
                is("WithArguments.noDefaultValue(\"value\", \"value2\")"));
    }

    @Test
    public void fallbackToEnglishTranslationWorksOnPartiallyTranslatedInterfaces() {
        C10N.configure(new C10NConfigBase() {

            @Override
            protected void configure() {
                install(new DefaultC10NAnnotations());
                bindAnnotation(En.class);//fallback to @En
            }
        });

        Locale.setDefault(Locale.JAPANESE);
        Messages msg = C10N.get(Messages.class);
        assertThat(msg.greeting1(), is("konnichiwa"));
        assertThat(msg.greeting2(), is("fallback"));
    }

    interface Messages {
        @En("hello")
        @Ja("konnichiwa")
        String greeting1();

        @En("fallback")
        String greeting2();
    }
}

interface WithFallback {
    @C10NDef("Fallback message")
    String message();
}

interface SubInterfaceWithFallback extends WithFallback {
    @C10NDef("msg2")
    String msg2();
}

interface NoFallback {
    String noDefaultValue();
}

interface WithArguments {
    @C10NDef("Hello, {0}!")
    String greet(String who);

    String noDefaultValue(Object arg, Object arg2);
}