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Groovy example source code file (StackTraceTest.groovy)

This example Groovy source code file (StackTraceTest.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

exception, exception, groovytestcase, groovytestcase, missingpropertyexception, missingpropertyexception, stacktracetest, stacktracetest

The Groovy StackTraceTest.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 groovy

/**
 * This test case is added to ensure an exception thrown from inside
 * groovy does always contain a valid line number and file name for
 * the script method the exception is thrown from.
 *
 * See also GROOVY-726
 */
class StackTraceTest extends GroovyTestCase {


    public void testTrace() {
        def className = this.class.name
        def assertDone = false
        try {
            throw new Exception("e")
        } catch (Exception e) {
            assert e.message == "e"
            def trace = e.stackTrace
            trace.each {
                if (it.className == className && it.methodName == "testTrace") {
                    assert it.lineNumber > 0
                    assert it.fileName != null
                    assert it.fileName.length() > 0
                    assertDone = true
                }
            }
        }
        assert assertDone
    }


    public void testMissingProperty() {
        def assertDone = false
        def script = new GroovyShell().parse('println(unknownProp)', 'testMissingProperty.tst')
        try {
            script.run()
        } catch (MissingPropertyException mpe) {
            assert mpe.message.indexOf('unknownProp') > 0
            def found = mpe.stackTrace.find {
                it.lineNumber == 1 &&
                        it.fileName == 'testMissingProperty.tst'
            }
            assertDone = found != null
        }
        assert assertDone
    }
}

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