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Groovy example source code file (MultipleDefinitionOfSameVariableTest.groovy)

This example Groovy source code file (MultipleDefinitionOfSameVariableTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

a, a, compilabletestsupport, compilabletestsupport, doublefield, foo, foo, multipledefinitionofsamevariabletest, multipledefinitionofsamevariabletest

The Groovy MultipleDefinitionOfSameVariableTest.groovy source code

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * Licensed 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 gls.scope

import gls.CompilableTestSupport

public class MultipleDefinitionOfSameVariableTest extends CompilableTestSupport {

    public void testInSameBlock() {
        shouldNotCompile """
            def foo = 1
            def foo = 2
        """

        shouldNotCompile """
            class Foo {
                def foo() {
                    def bar=1
                    def bar=2
                }
            }
        """
    }

    public void testInSubBlocks() {
        shouldNotCompile """
             def foo = 1
             5.times { def foo=2 }
        """

        shouldNotCompile """
            def foo = 1
            label1: { def foo=2 }
        """

        shouldNotCompile """
            def foo = 1
            for (i in []) { def foo=2 }
        """

        shouldNotCompile """
            def foo = 1
            while (true) { def foo=2 }
        """
    }

    public void testInNestedClosure() {
        shouldNotCompile """
            def foo = 1
            5.times { 6.times {def foo=2 }
        """

        assertScript """
            def foo = 1
            5.times { 6.times {foo=2 } }
            assert foo == 2
        """
    }

    public void testBindingHiding() {
        assertScript """
            foo = 1
            def foo = 3
            assert foo==3
            assert this.foo == 1
            assert binding.foo == 1
        """
    }

    public void testBindingAccessInMethod() {
        assertScript """
            def methodUsingBinding() {
                try {
                    s = "  bbb  ";
                } finally {
                    s = s.trim();
                }
                assert s == "bbb"
            }
            methodUsingBinding()
            assert s == "bbb"
        """
    }

    public void testMultipleOfSameName() {
        shouldNotCompile """
            class DoubleField {
                def zero = 0
                def zero = 0
            }
        """
    }

    void testPropertyField() {
        shouldCompile """
            class A {
                def foo
                private foo
            }
        """
    }

    void testFieldProperty() {
        shouldCompile """
            class A {
                private foo
                def foo
            }
        """
    }

    void testFieldPropertyProperty() {
        shouldNotCompile """
            class A {
                private foo
                def foo
                def foo
            }
        """
    }

    void testPropertyFieldField() {
        shouldNotCompile """
            class A {
                def foo
                private foo
                private foo
            }
        """
    }

}

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