Java tutorial
/*- * -\-\- * hamcrest-jackson * -- * Copyright (C) 2016 Spotify AB * -- * 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.spotify.hamcrest.jackson; import static com.spotify.hamcrest.jackson.IsJsonNull.jsonNull; import static org.hamcrest.core.Is.is; import static org.junit.Assert.assertThat; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.node.JsonNodeFactory; import com.fasterxml.jackson.databind.node.NullNode; import org.hamcrest.Matcher; import org.hamcrest.StringDescription; import org.junit.Test; public class IsJsonNullTest { private static final JsonNodeFactory NF = JsonNodeFactory.instance; @Test public void testType() throws Exception { final Matcher<JsonNode> sut = jsonNull(); assertThat(NullNode.getInstance(), is(sut)); } @Test public void testMatch() throws Exception { final Matcher<JsonNode> sut = jsonNull(); assertThat(NullNode.getInstance(), is(sut)); } @Test public void testMismatchType() throws Exception { final Matcher<JsonNode> sut = jsonNull(); final StringDescription description = new StringDescription(); sut.describeMismatch(NF.textNode("goat"), description); assertThat(description.toString(), is("was not a null node, but a string node")); } @Test public void testDescription() throws Exception { final Matcher<JsonNode> sut = jsonNull(); final StringDescription description = new StringDescription(); sut.describeTo(description); assertThat(description.toString(), is("a null node")); } }