JsonRepresentationTest_getBigDecimal.java

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 *  regarding copyright ownership.  The ASF licenses this file
 *  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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 *  specific language governing permissions and limitations
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package org.apache.isis.viewer.restfulobjects.applib;

import java.io.IOException;
import java.math.BigDecimal;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import static org.apache.isis.viewer.restfulobjects.applib.JsonFixture.readJson;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;

public class JsonRepresentationTest_getBigDecimal {

    @Rule
    public ExpectedException expectedException = ExpectedException.none();

    private JsonRepresentation jsonRepresentation;

    @Before
    public void setUp() throws Exception {
        jsonRepresentation = new JsonRepresentation(readJson("map.json"));
    }

    @Test
    public void happyCase() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("aBigDecimal"), is(new BigDecimal("12345678901234567890.1234")));
    }

    @Test
    public void happyCaseConvertingAnotherDoubleToBigDecimal() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("anotherDouble"), is(new BigDecimal("1234567.89")));
    }

    @Test
    public void happyCaseConvertingAnIntToBigDecimal() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("anInt"), is(new BigDecimal("123")));
    }
    
    @Test
    public void happyCaseForFormatJustFits() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("aBigDecimal", "big-decimal(24,4)"), is(new BigDecimal("12345678901234567890.1234")));
    }

    @Test
    public void invalidFormat() throws IOException {
        expectedException.expect(IllegalArgumentException.class);
        expectedException.expectMessage("Value '12345678901234567890.1234' larger than that allowed by format 'big-decimal(22,3)'");

        assertThat(jsonRepresentation.getBigDecimal("aBigDecimal", "big-decimal(22,3)"), is(new BigDecimal("12345678901234567890")));
    }

    @Test
    public void validFormattedFromPath() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("yetAnotherSubMap.aFormattedBigDecimal.value"), is(new BigDecimal("123.45")));
    }

    @Test
    public void invalidFormattedFromPath() throws IOException {
        expectedException.expect(IllegalArgumentException.class);
        expectedException.expectMessage("Value '123.45' larger than that allowed by format 'big-decimal(4,2)'");

        jsonRepresentation.getBigDecimal("yetAnotherSubMap.anInvalidFormattedBigDecimal.value");
    }

    @Test
    public void invalidFormattedFromPathButOverridden() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("yetAnotherSubMap.anInvalidFormattedBigDecimal.value", "big-decimal(5,2)"), is(new BigDecimal("123.45")));
    }

    @Test
    public void forNonExistent() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("doesNotExist"), is(nullValue()));
    }

    @Test
    public void forNonParseableString() throws IOException {
        expectedException.expect(IllegalArgumentException.class);
        expectedException.expectMessage("'aString' is not a bigdecimal");

        jsonRepresentation.getBigDecimal("aString");
    }

    @Test
    public void forMap() throws IOException {
        expectedException.expect(IllegalArgumentException.class);
        expectedException.expectMessage("'aSubMap' is not a bigdecimal");

        jsonRepresentation.getBigDecimal("aSubMap");
    }

    @Test
    public void forList() throws IOException {
        expectedException.expect(IllegalArgumentException.class);
        expectedException.expectMessage("'aSubList' is not a bigdecimal");

        jsonRepresentation.getBigDecimal("aSubList");
    }

    @Test
    public void forMultipartKey() throws IOException {
        assertThat(jsonRepresentation.getBigDecimal("aSubMap.aBigDecimal"), is(new BigDecimal("12345678901234567890.1234")));
    }

}