|
Groovy example source code file (LiteralTypesTest.groovy)
The Groovy LiteralTypesTest.groovy source codepackage groovy /** * Test numeric literal types (with and without suffixes) * @see org.codehaus.groovy.syntax.parser/ASTBuilder#createIntegralNumber() * @see org.codehaus.groovy.syntax.parser/ASTBuilder#createDecimalNumber() * * @author Brian Larson */ 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"); } } Other Groovy examples (source code examples)Here is a short list of links related to this Groovy LiteralTypesTest.groovy source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.