140 lines
4.8 KiB
Java
140 lines
4.8 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package selectionresolution;
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import java.util.function.Consumer;
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import java.util.Collection;
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import java.util.LinkedList;
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import java.util.List;
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/**
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* A master superclass for all selection/resolution tests. Contains a
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* couple of standard definitions that make writing these tests
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* easier.
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*/
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public abstract class SelectionResolutionTest {
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/**
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* A unified output function, to ensure that all output goes to
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* the right string (System.err).
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*
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* @param str The line to print.
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*/
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protected void println(final String str) {
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System.err.println(str);
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}
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/**
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* A test group is a generator for a set of tests that should
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* share common characteristics. The Simple class provides a
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* default implementation that should work for most purposes.
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*/
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public static interface TestGroup {
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/**
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* Given an action that runs a given test case, generate and
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* run all cases in this test group.
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*/
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public void runCases(Consumer<SelectionResolutionTestCase> runner);
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/**
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* The basic implementation of TestGroup. Produces one case
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* for every possible combination of cases from each of its
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* templates, by running them in order on an empty
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* SelectionResolutionTestCase.Builder. This should be good
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* enough for writing most tests.
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*/
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public static class Simple implements TestGroup {
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private final Template[] templates;
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private final SelectionResolutionTestCase.Builder initBuilder;
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public Simple(final SelectionResolutionTestCase.Builder initBuilder,
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final Template... templates) {
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this.templates = templates;
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this.initBuilder = initBuilder;
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}
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@Override
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public void runCases(final Consumer<SelectionResolutionTestCase> runner) {
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Consumer<SelectionResolutionTestCase.Builder> curr = (builder) -> {
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runner.accept(builder.build());
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};
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for(int i = templates.length - 1; i >= 0; i--) {
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final Consumer<SelectionResolutionTestCase.Builder> next = curr;
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final Template template = templates[i];
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curr = (builder) -> {
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template.runCases(next, builder);
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};
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}
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curr.accept(initBuilder);
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}
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}
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}
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private final List<String> errs = new LinkedList<String>();
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private final Collection<TestGroup> testGroups;
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private int testcount = 0;
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/**
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* Create a test from a set of test groups. Most actual tests can
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* just define the test groups and pass them into this
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* constructor, then call run.
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*/
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protected SelectionResolutionTest(final Collection<TestGroup> testGroups) {
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this.testGroups = testGroups;
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}
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/**
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* Run all the tests, report errors if they happen.
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*/
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protected void run() {
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testGroups.stream().forEach(
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(group) -> {
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group.runCases((final SelectionResolutionTestCase testcase) -> {
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testcount++;
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final String err = testcase.run();
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if (err != null) {
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errs.add(err);
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}
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});
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});
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println("Ran " + testcount + " cases");
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if(!errs.isEmpty()) {
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println("Errors occurred in test:");
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for(final String err : errs) {
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println(err);
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}
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throw new RuntimeException("Errors occurred in test");
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} else {
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println("All test cases succeeded");
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}
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}
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}
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