io.wcm.caravan.pipeline.extensions.hal.action.BuildResourceTest.java Source code

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Here is the source code for io.wcm.caravan.pipeline.extensions.hal.action.BuildResourceTest.java

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 * Copyright (C) 2014 wcm.io
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 * 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
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package io.wcm.caravan.pipeline.extensions.hal.action;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;

import java.util.Collections;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

import io.wcm.caravan.hal.resource.HalResource;
import io.wcm.caravan.hal.resource.util.HalBuilder;
import io.wcm.caravan.pipeline.JsonPipelineContext;
import io.wcm.caravan.pipeline.JsonPipelineOutput;
import io.wcm.caravan.pipeline.JsonPipelineOutputException;
import io.wcm.caravan.pipeline.impl.JsonPipelineOutputImpl;

@SuppressWarnings("deprecation")
@RunWith(MockitoJUnitRunner.class)
public class BuildResourceTest {

    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();

    @Mock
    private JsonPipelineContext context;

    private final ObjectNode payload = new HalResource("/old").getModel().put("oldAttribute", "value");

    private final BuildResource action = new BuildResource("/new") {

        @Override
        public HalResource build(HalResource input, HalBuilder outputBuilder) {
            HalResource outputHal = outputBuilder.build();
            outputHal.getModel().put("newAttribute", "value");
            return outputHal;
        }

    };

    private HalResource hal;

    @Before
    public void setup() {

        JsonPipelineOutput input = new JsonPipelineOutputImpl(payload, Collections.emptyList());
        JsonPipelineOutput output = action.execute(input, context).toBlocking().single();
        hal = new HalResource(output.getPayload());

    }

    @Test
    public void shouldHaveUniqueId() {

        assertEquals("BUILD-RESOURCE(/new)", action.getId());

    }

    @Test(expected = JsonPipelineOutputException.class)
    public void shouldThrowExceptionIfInputIsNoJsonObject() {

        JsonPipelineOutput input = new JsonPipelineOutputImpl(OBJECT_MAPPER.createArrayNode(),
                Collections.emptyList());
        action.execute(input, context).toBlocking().single();

    }

    @Test
    public void shouldAddSelfLinkIfInputIsNoHalResource() {

        JsonPipelineOutput input = new JsonPipelineOutputImpl(OBJECT_MAPPER.createObjectNode(),
                Collections.emptyList());
        JsonPipelineOutput output = action.execute(input, context).toBlocking().single();

        assertEquals("/new", new HalResource(output.getPayload()).getLink().getHref());

    }

    @Test
    public void shouldAddSelfLinkIfInputHalResourceHasNoLink() {

        ObjectNode errorInput = OBJECT_MAPPER.createObjectNode();
        errorInput.putObject("_links").putObject("self");
        JsonPipelineOutput input = new JsonPipelineOutputImpl(errorInput, Collections.emptyList());
        JsonPipelineOutput output = action.execute(input, context).toBlocking().single();

        assertEquals("/new", new HalResource(output.getPayload()).getLink().getHref());
    }

    @Test
    public void shouldHaveSelfHref() {

        assertEquals("/new", hal.getLink().getHref());

    }

    @Test
    public void shouldHaveNewState() {

        assertEquals("value", hal.getModel().get("newAttribute").asText(null));
        assertFalse(hal.getModel().has("oldAttribute"));

    }

}