/* * GSON Joda Time Serialisers * * Copyright 2019 Greg Kopff * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.fatboyindustrial.gsonjodatime; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import org.joda.time.Instant; import org.junit.Test; import static org.hamcrest.Matchers.is; import static org.hamcrest.Matchers.nullValue; import static org.junit.Assert.assertThat; /** * Tests for {@link InstantConverter}. */ public class InstantConverterTest { /** * Tests that the {@link Instant} can be round-tripped. */ @Test public void testRoundtrip() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final Instant ldt = new Instant(); assertThat(gson.fromJson(gson.toJson(ldt), Instant.class), is(ldt)); } /** * Tests that deserialising an empty string returns null */ @Test public void testDeserialiseEmptyString() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); assertThat(gson.fromJson("", Instant.class), is(nullValue())); } /** * Tests that deserialising a null string returns null */ @Test public void testDeserialiseNullString() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); assertThat(gson.fromJson((String) null, Instant.class), is(nullValue())); } /** * Tests that deserialising an ISO 8601 string with milliseconds returns an instant with milliseconds */ @Test public void testDeserialiseWithMilliseconds() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final String json = "\"2019-07-23T00:06:12.123Z\""; final String expectedStr = "2019-07-23T00:06:12.123Z"; final Instant expected = Instant.parse("2019-07-23T00:06:12.123Z"); final Instant reconstituted = gson.fromJson(json, Instant.class); assertThat(reconstituted.getMillis(), is(expected.getMillis())); assertThat(reconstituted.toString(), is(expectedStr)); assertThat(reconstituted, is(expected)); } /** * Tests that deserialising an ISO 8601 string without milliseconds returns an instant with zero milliseconds */ @Test public void testDeserialiseWithoutMilliseconds() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final String json = "\"2019-07-23T00:06:12Z\""; final String expectedStr = "2019-07-23T00:06:12.000Z"; final Instant expected = Instant.parse("2019-07-23T00:06:12.000Z"); final Instant reconstituted = gson.fromJson(json, Instant.class); assertThat(reconstituted.getMillis(), is(expected.getMillis())); assertThat(reconstituted.toString(), is(expectedStr)); assertThat(reconstituted, is(expected)); } /** * Tests that deserialising an ISO 8601 string with microseconds returns an instant with milliseconds portion of string */ @Test public void testDeserialiseWithMicroseconds() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final String json = "\"2019-07-23T00:06:12.123456Z\""; final String expectedStr = "2019-07-23T00:06:12.123Z"; final Instant expected = Instant.parse("2019-07-23T00:06:12.123Z"); final Instant reconstituted = gson.fromJson(json, Instant.class); assertThat(reconstituted.getMillis(), is(expected.getMillis())); assertThat(reconstituted.toString(), is(expectedStr)); assertThat(reconstituted, is(expected)); } /** * Tests that deserialising an ISO 8601 string with a timezone returns an instant (converted to utc) */ @Test public void testDeserialiseWithTimezoneOffset() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final String json = "\"2019-07-23T01:06:12.123+01:00\""; final String expectedStr = "2019-07-23T00:06:12.123Z"; final Instant expected = Instant.parse("2019-07-23T01:06:12.123+01:00"); final Instant reconstituted = gson.fromJson(json, Instant.class); assertThat(reconstituted.toString(), is(expectedStr)); assertThat(reconstituted, is(expected)); } /** * Tests that serialising an instant with milliseconds returns the expected ISO 8601 string */ @Test public void testSerialiseWithMilliseconds() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final Instant instant = Instant.parse("2019-07-23T00:06:12.123Z"); final String expectedJson = "\"2019-07-23T00:06:12.123Z\""; final String actualJson = gson.toJson(instant); assertThat(actualJson, is(expectedJson)); } /** * Tests that serialising an instant with out milliseconds returns the expected ISO 8601 string */ @Test public void testSerialiseWithOutMilliseconds() { final Gson gson = Converters.registerInstant(new GsonBuilder()).create(); final Instant instant = Instant.parse("2019-07-23T00:06:12Z"); final String expectedJson = "\"2019-07-23T00:06:12.000Z\""; final String actualJson = gson.toJson(instant); assertThat(actualJson, is(expectedJson)); } }