DirectLinkTest.java

/*
 * Copyright 2012 Guido Steinacker
 *
 * 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 de.otto.jsonhome.model;

import de.otto.jsonhome.fixtures.LinkFixtures;
import org.testng.annotations.Test;

import java.util.Collections;

import static de.otto.jsonhome.fixtures.LinkFixtures.*;
import static de.otto.jsonhome.model.Allow.GET;
import static de.otto.jsonhome.model.Allow.PUT;
import static de.otto.jsonhome.model.DirectLink.directLink;
import static de.otto.jsonhome.model.Documentation.emptyDocs;
import static de.otto.jsonhome.model.Hints.hints;
import static de.otto.jsonhome.model.Precondition.ETAG;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static java.util.EnumSet.of;
import static org.testng.Assert.assertEquals;

/**
 * @author Guido Steinacker
 * @since 16.09.12
 */
public class DirectLinkTest {

    @Test(expectedExceptions = IllegalArgumentException.class)
    public void mergeWithShouldFailWithExceptionIfOtherDoesNotHaveSameRelationType() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final DirectLink aboutPageLink = SHOPPAGES_LINK;
        // when
        storeFrontLink.mergeWith(aboutPageLink);
        // then an exception is thrown
    }

    @Test(expectedExceptions = IllegalArgumentException.class)
    public void mergeWithShouldFailIfOtherHasDifferentHref() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final DirectLink linkWithDifferentHref = directLink(LinkFixtures.RESOURCELINK_SHOP_STOREFRONT, LinkFixtures.ABS_SHOPPAGES_HREF, hints(of(GET), asList("text/html", "application/json")));
        // when
        storeFrontLink.mergeWith(linkWithDifferentHref);
        // then an exception is thrown
    }

    @Test
    public void mergeWithShouldMergeAllowsSpec() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final DirectLink linkWithDifferentHref = directLink(LinkFixtures.RESOURCELINK_SHOP_STOREFRONT, LinkFixtures.ABS_STOREFRONT_HREF, hints(of(PUT), singletonList("text/html")));
        // when
        final ResourceLink resourceLink = storeFrontLink.mergeWith(linkWithDifferentHref);
        // then
        assertEquals(resourceLink.getHints().getAllows(), of(GET, PUT));
    }

    @Test
    public void mergeWithShouldMergeRepresentations() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final DirectLink linkWithDifferentHref = directLink(LinkFixtures.RESOURCELINK_SHOP_STOREFRONT, LinkFixtures.ABS_STOREFRONT_HREF, hints(of(GET), singletonList("application/json")));
        // when
        final ResourceLink resourceLink = storeFrontLink.mergeWith(linkWithDifferentHref);
        // then
        assertEquals(resourceLink.getHints().getRepresentations(), asList("text/html", "application/json"));
    }

    @Test
    public void mergeWithShouldMergeRequiredPreconditions() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final DirectLink linkWithDifferentHref = directLink(
                LinkFixtures.RESOURCELINK_SHOP_STOREFRONT,
                LinkFixtures.ABS_STOREFRONT_HREF,
                hints(
                        of(GET), singletonList("application/json"),
                        Collections.<String>emptyList(),
                        Collections.<String>emptyList(),
                        Collections.<String>emptyList(),
                        Collections.<String>emptyList(),
                        Collections.<String>emptyList(),
                        asList(ETAG),
                        Collections.<Authentication>emptyList(),
                        Status.OK,
                        emptyDocs()
                )
        );
        // when
        final ResourceLink resourceLink = storeFrontLink.mergeWith(linkWithDifferentHref);
        // then
        assertEquals(resourceLink.getHints().getPreconditionReq(), asList(ETAG));
    }

    @Test(expectedExceptions = IllegalArgumentException.class)
    public void mergeWithTemplatedLinkShouldFailWithIllegalStateException() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        final TemplatedLink templatedLink = ABOUTPAGE_LINK;
        // when
        storeFrontLink.mergeWith(templatedLink);
        // then an exception is thrown.
    }

    @Test
    public void mergeWithSelfShouldReturnEqualDirectLink() {
        // given
        final DirectLink storeFrontLink = STOREFRONT_LINK;
        // when
        final ResourceLink mergedLink = storeFrontLink.mergeWith(storeFrontLink);
        // then
        assertEquals(storeFrontLink, mergedLink);
    }

}