src/test/groovy/LiteralTypesTest.groovy

/*
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 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  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
 *  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 groovy

import groovy.test.GroovyTestCase

/**
 * Test numeric literal types (with and without suffixes)
 * @see org.codehaus.groovy.syntax.parser/ASTBuilder#createIntegralNumber()
 * @see org.codehaus.groovy.syntax.parser/ASTBuilder#createDecimalNumber()
 */
class LiteralTypesTest extends GroovyTestCase {

    void testIntegral() {
        def x = 42
        assert x instanceof Integer

        x = 42I
        assert x instanceof Integer

        x = 42i
        assert x instanceof Integer

        x = 42L
        assert x instanceof Long

        x = 42G
        assert x instanceof BigInteger

        x = 0xFF //Hex
        assert x instanceof Integer
        assert x == new Integer("255")

        x = 0xFFL //Hex
        assert x instanceof Long
        assert x == new Long("255")

        x = 0xFFG //Hex
        assert x instanceof BigInteger
        assert x == new BigInteger("FF",16)

        x = 0x9000000000000000
        assert x instanceof BigInteger
        assert x == new BigInteger("9000000000000000",16)

        x = 077 //octal
        assert x instanceof Integer
        assert x == new Integer("63")

        x = 077l //octal
        assert x instanceof Long
        assert x == new Long("63")

        x = 077g //octal
        assert x instanceof BigInteger
        assert x == new BigInteger("77",8)

        x = 2147483647           // max integer value
        assert x instanceof Integer
        assert x == new Integer("2147483647")

        x = -2147483648          // min integer constant
        assert x < 0
        assert x == new Integer("-2147483648")
        assert x instanceof Integer, x.class

        x = -2147483649          // min integer value - 1
        assert x == new Long("-2147483649")
        assert x instanceof Long

        x = 2147483648           // 1 + max integer value
        assert x == new Long("2147483648")
        assert x instanceof Long

        x = 9223372036854775807  // max long value
        assert x == new Long("9223372036854775807")
        assert x instanceof Long

        x = -9223372036854775808 // min long value
        assert x == new Long("-9223372036854775808")
        assert x instanceof Long

        x = -9223372036854775809 // min long value - 1
        assert x == new BigInteger("-9223372036854775809")
        assert x instanceof BigInteger

        x = 9223372036854775808  // 1 + max long value
        assert x == new BigInteger("9223372036854775808")
        assert x instanceof BigInteger
    }

    void testDecimal() {
        def x = 3.2
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.2")

        x = 3.2G
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.2")

        x = 3.2g
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.2")

        x = -3.2
        assert x instanceof BigDecimal
        assert x == new BigDecimal("-3.2")

        x = 3.2D
        assert x instanceof Double
        assert x == new Double("3.2")

        x = -3.2d
        assert x instanceof Double
        assert x == new Double("-3.2")

        x = 3.2F
        assert x instanceof Float
        assert x == new Float("3.2")

        x = -3.2f
        assert x instanceof Float
        assert x == new Float("-3.2")
    }

    void testExponential() {
        def x = 3.1415926535e42
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.1415926535e42")

        x = 3.2e+2
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.2e+2")

        x = 3.2e-2
        assert x instanceof BigDecimal
        assert x == new BigDecimal("3.2e-2")

        x = 3.2e2d
        assert x instanceof Double
        assert x == new Double("3.2e2")

        x = 3.2e2f
        assert x instanceof Float
        assert x == new Float("3.2e2")
    }
}