ParserTest.java

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 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *        http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.isis.viewer.restfulobjects.applib.util;

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

import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import javax.ws.rs.core.CacheControl;

import org.apache.isis.core.commons.matchers.IsisMatchers;
import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
import org.junit.Test;

import com.google.common.collect.Lists;
import com.google.common.net.MediaType;

public class ParserTest {

    @Test
    public void forBoolean() {
        final Parser<Boolean> parser = Parser.forBoolean();
        for (final Boolean v : new Boolean[] { Boolean.TRUE, Boolean.FALSE }) {
            final String asString = parser.asString(v);
            final Boolean valueOf = parser.valueOf(asString);
            assertThat(v, is(equalTo(valueOf)));
        }

        final Boolean valueOf = parser.valueOf(Arrays.asList(parser.asString(Boolean.TRUE), parser.asString(Boolean.FALSE)));
        assertThat(valueOf, is(Boolean.TRUE));
    }

    @Test
    public void forString() {
        final Parser<String> parser = Parser.forString();

        for (final String v : new String[] { "", "foo", "foz" }) {
            final String asString = parser.asString(v);
            final String valueOf = parser.valueOf(asString);
            assertThat(v, is(equalTo(valueOf)));
        }
    }

    @Test
    public void forListOfStrings() {
        final Parser<List<String>> parser = Parser.forListOfStrings();

        final List<String> v = Arrays.asList("", "foo", "foz");

        final String asString = parser.asString(v);
        final List<String> valueOf = parser.valueOf(asString);

        assertThat(v, IsisMatchers.sameContentsAs(valueOf));
    }

    @Test
    public void forListOfListOfStringsDottedNotation() {
        final Parser<List<List<String>>> parser = Parser.forListOfListOfStrings();

        final List<List<String>> valueOf = parser.valueOf(Arrays.asList("a", "b.c", "d.e.f"));

        assertThat(valueOf.size(), is(3));
        assertThat(valueOf.get(0).size(), is(1));
        assertThat(valueOf.get(0).get(0), is("a"));
        assertThat(valueOf.get(1).size(), is(2));
        assertThat(valueOf.get(1).get(0), is("b"));
        assertThat(valueOf.get(1).get(1), is("c"));
        assertThat(valueOf.get(2).size(), is(3));
        assertThat(valueOf.get(2).get(0), is("d"));
        assertThat(valueOf.get(2).get(1), is("e"));
        assertThat(valueOf.get(2).get(2), is("f"));

        assertThat(parser.asString(valueOf), is("a,b.c,d.e.f"));
    }

    @Test
    public void forListOfListOfStringsCommaSeparated() {
        final Parser<List<List<String>>> parser = Parser.forListOfListOfStrings();

        final List<List<String>> valueOf = parser.valueOf("a,b.c,d.e.f");

        assertThat(valueOf.size(), is(3));
        assertThat(valueOf.get(0).size(), is(1));
        assertThat(valueOf.get(0).get(0), is("a"));
        assertThat(valueOf.get(1).size(), is(2));
        assertThat(valueOf.get(1).get(0), is("b"));
        assertThat(valueOf.get(1).get(1), is("c"));
        assertThat(valueOf.get(2).size(), is(3));
        assertThat(valueOf.get(2).get(0), is("d"));
        assertThat(valueOf.get(2).get(1), is("e"));
        assertThat(valueOf.get(2).get(2), is("f"));
    }

    @Test
    public void forGuavaMediaTypes() {
        final Parser<MediaType> parser = Parser.forGuavaMediaType();
        final MediaType mediaType = MediaType.parse("application/json");
        final String asString = parser.asString(mediaType);
        final MediaType valueOf = parser.valueOf(asString);

        assertThat(valueOf, is(mediaType));
    }

    @Test
    public void forListOfMediaTypes() {
        final Parser<List<MediaType>> parser = Parser.forListOfGuavaMediaTypes();
        final List<MediaType> list = Arrays.asList(MediaType.parse("application/xml"), MediaType.parse("application/json"));
        final String asString = parser.asString(list);
        final List<MediaType> valueOf = parser.valueOf(asString);

        assertThat(list, IsisMatchers.sameContentsAs(valueOf));
    }

    @Test
    public void forDate() {
        final Parser<Date> parser = Parser.forDate();

        final Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());
        cal.set(Calendar.MILLISECOND, 0);
        final Date nowToNearestSecond = cal.getTime();
        for (final Date v : new Date[] { nowToNearestSecond }) {
            final String asString = parser.asString(v);
            final Date valueOf = parser.valueOf(asString);
            assertThat(v, is(equalTo(valueOf)));
        }
    }

    @Test
    public void forInteger() {
        final Parser<Integer> parser = Parser.forInteger();

        for (final Integer v : new Integer[] { 1, 2, 3, -5, -100, 0, Integer.MAX_VALUE, Integer.MIN_VALUE }) {
            final String asString = parser.asString(v);
            final Integer valueOf = parser.valueOf(asString);
            assertThat(v, is(equalTo(valueOf)));
        }
    }

    @Test
    public void forJaxRsMediaType() {
        final Parser<javax.ws.rs.core.MediaType> parser = Parser.forJaxRsMediaType();

        for (final javax.ws.rs.core.MediaType v : new javax.ws.rs.core.MediaType[] { javax.ws.rs.core.MediaType.APPLICATION_ATOM_XML_TYPE, javax.ws.rs.core.MediaType.APPLICATION_JSON_TYPE, javax.ws.rs.core.MediaType.APPLICATION_XHTML_XML_TYPE, javax.ws.rs.core.MediaType.valueOf(RestfulMediaType.APPLICATION_JSON_OBJECT) }) {
            final String asString = parser.asString(v);
            final javax.ws.rs.core.MediaType valueOf = parser.valueOf(asString);
            assertThat(v, is(equalTo(valueOf)));
        }
    }

    @Test
    public void forCacheControl() {
        final Parser<CacheControl> parser = Parser.forCacheControl();

        final CacheControl cc1 = createCacheControl();
        cc1.setMaxAge(2000);
        final CacheControl cc2 = createCacheControl();
        cc2.setNoCache(true);
        for (final CacheControl v : new CacheControl[] { cc1, cc2 }) {
            final String asString = parser.asString(v);
            final CacheControl valueOf = parser.valueOf(asString);
            assertThat(v.getMaxAge(), is(equalTo(valueOf.getMaxAge())));
            assertThat(v.isNoCache(), is(equalTo(valueOf.isNoCache())));
        }
    }

    private static CacheControl createCacheControl() {
        final CacheControl cacheControl = new CacheControl();
        cacheControl.getCacheExtension(); // workaround for bug in
                                          // CacheControl's equals() method
        cacheControl.getNoCacheFields(); // workaround for bug in CacheControl's
                                         // equals() method
        return cacheControl;
    }

}