Source Code Cross Referenced for Assert.java in  » Testing » abbot-1.0.1 » abbot » script » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » abbot 1.0.1 » abbot.script 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package abbot.script;
002:
003:        import java.util.Map;
004:        import javax.swing.tree.TreePath;
005:
006:        import abbot.*;
007:        import abbot.i18n.Strings;
008:        import abbot.tester.ComponentTester;
009:        import abbot.util.ExtendedComparator;
010:
011:        /** Encapsulate an assertion (or a wait).  Usage:<br>
012:         * <blockquote><code>
013:         * &lt;assert method="[!]assertXXX" args="..." [class="..."]&gt;<br>
014:         * &lt;assert method="[!](get|is|has)XXX" component="component_id" value="..."&gt;<br>
015:         * &lt;assert method="[!]XXX" args="..." class="..."&gt;<br>
016:         * <br>
017:         * &lt;wait ... [timeout="..."] [pollInterval="..."]&gt;<br>
018:         * </code></blockquote>
019:         * The first example above invokes a core assertion provided by the
020:         * {@link abbot.tester.ComponentTester} class; the class tag is required for
021:         * assertions based on a class derived from
022:         * {@link abbot.tester.ComponentTester}; the class tag indicates the
023:         * {@link java.awt.Component} class, not the Tester class (the appropriate
024:         * tester class will be derived automatically).<p>
025:         * The second format indicates a property check on the given component, and an
026:         * expected value must be provided; the method name must start with "is",
027:         * "get", or "has".  Finally, any arbitrary static boolean method may be used
028:         * in the assertion; you must specify the class and arguments.<p>  
029:         * You can invert the sense of either form of assertion by inserting a '!'
030:         * character before the method name, or adding an <code>invert="true"</code>
031:         * attribute. 
032:         * <p>
033:         * The default timeout for a wait is ten seconds; the default poll interval
034:         * (sleep time between checking the assertion) is 1/10 second.  Both may be
035:         * set as XML attributes (<code>pollInterval</code> and <code>timeout</code>).
036:         */
037:
038:        public class Assert extends PropertyCall {
039:            /** Default interval between checking the assertion in a wait. */
040:            public static final int DEFAULT_INTERVAL = 100;
041:            /** Default timeout before a wait will indicate failure. */
042:            public static final int DEFAULT_TIMEOUT = 10000;
043:
044:            private static final String ASSERT_USAGE = "<assert component=... method=... value=... [invert=true]/>\n"
045:                    + "<assert method=[!]... [class=...]/>";
046:
047:            private static final String WAIT_USAGE = "<wait component=... method=... value=... [invert=true] "
048:                    + "[timeout=...] [pollInterval=...]/>\n"
049:                    + "<wait method=[!]... [class=...] [timeout=...] [pollInterval=...]/>";
050:
051:            private String expectedResult = "true";
052:            private boolean invert;
053:            private boolean wait;
054:
055:            private long interval = DEFAULT_INTERVAL;
056:            private long timeout = DEFAULT_TIMEOUT;
057:
058:            /** Construct an assert step from XML. */
059:            public Assert(Resolver resolver, Map attributes) {
060:                super (resolver, patchAttributes(attributes));
061:                wait = attributes.get(TAG_WAIT) != null;
062:                String to = (String) attributes.get(TAG_TIMEOUT);
063:                if (to != null) {
064:                    try {
065:                        timeout = Integer.parseInt(to);
066:                    } catch (NumberFormatException exc) {
067:                    }
068:                }
069:                String pi = (String) attributes.get(TAG_POLL_INTERVAL);
070:                if (pi != null) {
071:                    try {
072:                        interval = Integer.parseInt(pi);
073:                    } catch (NumberFormatException exc) {
074:                    }
075:                }
076:                init(Boolean.valueOf((String) attributes.get(TAG_INVERT))
077:                        .booleanValue(), (String) attributes.get(TAG_VALUE));
078:            }
079:
080:            /** Assertion provided by the ComponentTester class, or an arbitrary
081:                static call.
082:             */
083:            public Assert(Resolver resolver, String desc,
084:                    String targetClassName, String methodName, String[] args,
085:                    String expectedResult, boolean invert) {
086:                super (resolver, desc, targetClassName != null ? targetClassName
087:                        : ComponentTester.class.getName(), methodName, args);
088:                init(invert, expectedResult);
089:            }
090:
091:            /** Assertion provided by a ComponentTester subclass which operates on a
092:             * Component subclass.
093:             */
094:            public Assert(Resolver resolver, String desc, String methodName,
095:                    String[] args, Class testedClass, String expectedResult,
096:                    boolean invert) {
097:                super (resolver, desc, testedClass.getName(), methodName, args);
098:                init(invert, expectedResult);
099:            }
100:
101:            /** Property assertion on Component subclass. */
102:            public Assert(Resolver resolver, String desc, String methodName,
103:                    String componentID, String expectedResult, boolean invert) {
104:                super (resolver, desc, methodName, componentID);
105:                init(invert, expectedResult);
106:            }
107:
108:            /** The canonical form for a boolean assertion is to return true, and set
109:             * the invert flag if necessary.
110:             */
111:            private void init(boolean inverted, String value) {
112:                if ("false".equals(value)) {
113:                    inverted = !inverted;
114:                    value = "true";
115:                }
116:                expectedResult = value != null ? value : "true";
117:                invert = inverted;
118:            }
119:
120:            /** Changes the behavior of this step between failing if the condition is
121:                not met and waiting for the condition to be met.
122:                @param wait If true, this step returns from its {@link #runStep()}
123:                method only when its condition is met, throwing a
124:                {@link WaitTimedOutError} if the condition is not met within the
125:                timeout interval. 
126:                @see #setPollInterval(long)
127:                @see #getPollInterval()
128:                @see #setTimeout(long)
129:                @see #getTimeout()
130:             */
131:            public void setWait(boolean wait) {
132:                this .wait = wait;
133:            }
134:
135:            public boolean isWait() {
136:                return wait;
137:            }
138:
139:            public void setPollInterval(long interval) {
140:                this .interval = interval;
141:            }
142:
143:            public long getPollInterval() {
144:                return interval;
145:            }
146:
147:            public void setTimeout(long timeout) {
148:                this .timeout = timeout;
149:            }
150:
151:            public long getTimeout() {
152:                return timeout;
153:            }
154:
155:            public String getExpectedResult() {
156:                return expectedResult;
157:            }
158:
159:            public void setExpectedResult(String result) {
160:                init(invert, result);
161:            }
162:
163:            public boolean isInverted() {
164:                return invert;
165:            }
166:
167:            public void setInverted(boolean invert) {
168:                init(invert, expectedResult);
169:            }
170:
171:            /** Strip inversion from the method name. */
172:            private static Map patchAttributes(Map map) {
173:                String method = (String) map.get(TAG_METHOD);
174:                if (method != null && method.startsWith("!")) {
175:                    map.put(TAG_METHOD, method.substring(1));
176:                    map.put(TAG_INVERT, "true");
177:                }
178:                // If no class is specified, default to ComponentTester
179:                String cls = (String) map.get(TAG_CLASS);
180:                if (cls == null) {
181:                    map.put(TAG_CLASS, "abbot.tester.ComponentTester");
182:                }
183:                return map;
184:            }
185:
186:            public String getXMLTag() {
187:                return wait ? TAG_WAIT : TAG_ASSERT;
188:            }
189:
190:            public String getUsage() {
191:                return wait ? WAIT_USAGE : ASSERT_USAGE;
192:            }
193:
194:            public String getDefaultDescription() {
195:                String mname = getMethodName();
196:                // assert/is/get doesn't really add any information, so drop it
197:                if (mname.startsWith("assert"))
198:                    mname = mname.substring(6);
199:                else if (mname.startsWith("get") || mname.startsWith("has"))
200:                    mname = mname.substring(3);
201:                else if (mname.startsWith("is"))
202:                    mname = mname.substring(2);
203:                // FIXME this is cruft; really only need i18n for wait for X/assert X
204:                // [!][$.]m [==|!= v]
205:                String expression = mname + getArgumentsDescription();
206:                if (getComponentID() != null)
207:                    expression = "${" + getComponentID() + "}." + expression;
208:                if (invert && "true".equals(expectedResult))
209:                    expression = "!" + expression;
210:                if (!"true".equals(expectedResult)) {
211:                    expression += invert ? " != " : " == ";
212:                    expression += expectedResult;
213:                }
214:                if (wait && timeout != DEFAULT_TIMEOUT) {
215:                    expression += " "
216:                            + Strings
217:                                    .get(
218:                                            (timeout > 5000 ? "wait.seconds"
219:                                                    : "wait.milliseconds"),
220:                                            new Object[] { String
221:                                                    .valueOf(timeout > 5000 ? timeout / 1000
222:                                                            : timeout) });
223:                }
224:                return Strings.get((wait ? "wait.desc" : "assert.desc"),
225:                        new Object[] { expression });
226:            }
227:
228:            public Map getAttributes() {
229:                Map map = super .getAttributes();
230:                if (invert) {
231:                    map.put(TAG_INVERT, "true");
232:                }
233:                if (!expectedResult.equalsIgnoreCase("true")) {
234:                    map.put(TAG_VALUE, expectedResult);
235:                }
236:                if (timeout != DEFAULT_TIMEOUT)
237:                    map.put(TAG_TIMEOUT, String.valueOf(timeout));
238:                if (interval != DEFAULT_INTERVAL)
239:                    map.put(TAG_POLL_INTERVAL, String.valueOf(interval));
240:                return map;
241:            }
242:
243:            /** Check the assertion.  */
244:            protected void evaluateAssertion() throws Throwable {
245:                Object expected, actual;
246:                Class type = getMethod().getReturnType();
247:                boolean compareStrings = false;
248:
249:                try {
250:                    expected = ArgumentParser.eval(getResolver(),
251:                            expectedResult, type);
252:                } catch (IllegalArgumentException iae) {
253:                    // If we can't convert the string to the expected type,
254:                    // match the string against the result's toString method instead
255:                    expected = expectedResult;
256:                    compareStrings = true;
257:                }
258:
259:                actual = invoke();
260:
261:                // Special-case TreePaths; we want to string-compare the underlying
262:                // objects rather than the TreePaths themselves.
263:                // If this comes up again we'll look for a generalized solution.
264:                if (expected instanceof  TreePath && actual instanceof  TreePath) {
265:                    expected = ArgumentParser.toString(((TreePath) expected)
266:                            .getPath());
267:                    actual = ArgumentParser.toString(((TreePath) actual)
268:                            .getPath());
269:                }
270:
271:                if (compareStrings) {
272:                    actual = ArgumentParser.toString(actual);
273:                }
274:
275:                if (invert) {
276:                    assertNotEquals(toString(), expected, actual);
277:                } else {
278:                    assertEquals(toString(), expected, actual);
279:                }
280:            }
281:
282:            /** Use our own comparison, to get the extended array comparisons. */
283:            private void assertEquals(String message, Object expected,
284:                    Object actual) {
285:                if (!ExtendedComparator.equals(expected, actual)) {
286:                    String msg = Strings.get("assert.comparison_failed",
287:                            new Object[] {
288:                                    (message != null ? message + " " : ""),
289:                                    ArgumentParser.toString(actual) });
290:                    throw new AssertionFailedError(msg, this );
291:                }
292:            }
293:
294:            /** Use our own comparison, to get the extended array comparisons. */
295:            private void assertNotEquals(String message, Object expected,
296:                    Object actual) {
297:                if (ExtendedComparator.equals(expected, actual)) {
298:                    String msg = message != null ? message : "";
299:                    throw new AssertionFailedError(msg, this );
300:                }
301:            }
302:
303:            /** Run this step. */
304:            protected void runStep() throws Throwable {
305:                if (!wait) {
306:                    evaluateAssertion();
307:                } else {
308:                    long now = System.currentTimeMillis();
309:                    long remaining = timeout;
310:                    while (remaining > 0) {
311:                        long start = now;
312:                        try {
313:                            try {
314:                                evaluateAssertion();
315:                                return;
316:                            } catch (AssertionFailedError exc) {
317:                                // keep waiting
318:                                Log.debug(exc);
319:                            }
320:                            Thread.sleep(interval);
321:                        } catch (InterruptedException ie) {
322:                        }
323:                        now = System.currentTimeMillis();
324:                        remaining -= now - start;
325:                    }
326:                    throw new WaitTimedOutError(Strings
327:                            .get("wait.timed_out", new Object[] {
328:                                    String.valueOf(timeout), toString() }));
329:                }
330:            }
331:
332:        }
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