mirror of
https://github.com/meteor/meteor.git
synced 2026-05-02 03:01:46 -04:00
551 lines
16 KiB
JavaScript
551 lines
16 KiB
JavaScript
/******************************************************************************/
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/* TestCaseResults */
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/******************************************************************************/
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TestCaseResults = function (test_case, onEvent, onException, stop_at_offset) {
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var self = this;
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self.test_case = test_case;
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self.onEvent = onEvent;
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self.expecting_failure = false;
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self.current_fail_count = 0;
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self.stop_at_offset = stop_at_offset;
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self.onException = onException;
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self.id = Random.id();
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};
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_.extend(TestCaseResults.prototype, {
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ok: function (doc) {
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var self = this;
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var ok = {type: "ok"};
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if (doc)
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ok.details = doc;
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if (self.expecting_failure) {
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ok.details = ok.details || {};
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ok.details["was_expecting_failure"] = true;
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self.expecting_failure = false;
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}
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self.onEvent(ok);
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},
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expect_fail: function () {
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var self = this;
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self.expecting_failure = true;
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},
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fail: function (doc) {
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var self = this;
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if (typeof doc === "string") {
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// Some very old code still tries to call fail() with a
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// string. Don't do this!
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doc = { type: "fail", message: doc };
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}
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if (self.stop_at_offset === 0) {
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if (Meteor.isClient) {
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// Only supported on the browser for now..
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var now = (+new Date);
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debugger;
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if ((+new Date) - now < 100)
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alert("To use this feature, first enable your browser's debugger.");
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}
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self.stop_at_offset = null;
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}
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if (self.stop_at_offset)
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self.stop_at_offset--;
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// Get filename and line number of failure if we're using v8 (Chrome or
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// Node).
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if (Error.captureStackTrace) {
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var savedPrepareStackTrace = Error.prepareStackTrace;
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Error.prepareStackTrace = function(_, stack){ return stack; };
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var err = new Error;
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Error.captureStackTrace(err);
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var stack = err.stack;
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Error.prepareStackTrace = savedPrepareStackTrace;
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for (var i = stack.length - 1; i >= 0; --i) {
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var frame = stack[i];
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// Heuristic: use the OUTERMOST line which is in a :tests.js
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// file (this is less likely to be a test helper function).
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if (frame.getFileName().match(/:tests\.js/)) {
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doc.filename = frame.getFileName();
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doc.line = frame.getLineNumber();
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break;
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}
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}
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}
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self.onEvent({
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type: (self.expecting_failure ? "expected_fail" : "fail"),
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details: doc,
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cookie: {name: self.test_case.name, offset: self.current_fail_count,
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groupPath: self.test_case.groupPath,
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shortName: self.test_case.shortName}
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});
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self.expecting_failure = false;
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self.current_fail_count++;
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},
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// Call this to fail the test with an exception. Use this to record
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// exceptions that occur inside asynchronous callbacks in tests.
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//
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// It should only be used with asynchronous tests, and if you call
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// this function, you should make sure that (1) the test doesn't
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// call its callback (onComplete function); (2) the test function
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// doesn't directly raise an exception.
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exception: function (exception) {
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this.onException(exception);
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},
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// returns a unique ID for this test run, for convenience use by
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// your tests
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runId: function () {
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return this.id;
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},
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// === Following patterned after http://vowsjs.org/#reference ===
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// XXX eliminate 'message' and 'not' arguments
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equal: function (actual, expected, message, not) {
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if ((! not) && (typeof actual === 'string') &&
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(typeof expected === 'string')) {
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this._stringEqual(actual, expected, message);
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return;
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}
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/* If expected is a DOM node, do a literal '===' comparison with
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* actual. Otherwise do a deep comparison, as implemented by _.isEqual.
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*/
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var matched;
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// XXX remove cruft specific to liverange
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if (typeof expected === "object" && expected && expected.nodeType) {
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matched = expected === actual;
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expected = "[Node]";
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actual = "[Unknown]";
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} else if (typeof Uint8Array !== 'undefined' && expected instanceof Uint8Array) {
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// I have no idea why but _.isEqual on Chrome horks completely on Uint8Arrays.
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// and the symptom is the chrome renderer taking up an entire CPU and freezing
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// your web page, but not pausing anywhere in _.isEqual. I don't understand it
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// but we fall back to a manual comparison
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if (!(actual instanceof Uint8Array))
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this.fail({type: "assert_equal", message: "found object is not a typed array",
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expected: "A typed array", actual: actual.constructor.toString()});
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if (expected.length !== actual.length)
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this.fail({type: "assert_equal", message: "lengths of typed arrays do not match",
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expected: expected.length, actual: actual.length});
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for (var i = 0; i < expected.length; i++) {
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this.equal(actual[i], expected[i]);
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}
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} else {
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matched = EJSON.equals(expected, actual);
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}
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if (matched === !!not) {
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this.fail({type: "assert_equal", message: message,
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expected: JSON.stringify(expected), actual: JSON.stringify(actual), not: !!not});
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} else
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this.ok();
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},
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notEqual: function (actual, expected, message) {
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this.equal(actual, expected, message, true);
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},
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instanceOf: function (obj, klass) {
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if (obj instanceof klass)
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this.ok();
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else
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this.fail({type: "instanceOf"}); // XXX what other data?
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},
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matches: function (actual, regexp, message) {
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if (regexp.test(actual))
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this.ok();
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else
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this.fail({type: "matches", message: message,
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actual: actual, regexp: regexp.toString()});
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},
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// XXX nodejs assert.throws can take an expected error, as a class,
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// regular expression, or predicate function. However, with its
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// implementation if a constructor (class) is passed in and `actual`
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// fails the instanceof test, the constructor is then treated as
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// a predicate and called with `actual` (!)
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//
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// expected can be:
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// undefined: accept any exception.
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// regexp: accept an exception with message passing the regexp.
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// function: call the function as a predicate with the exception.
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throws: function (f, expected) {
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var actual, predicate;
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if (expected === undefined)
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predicate = function (actual) {
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return true;
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};
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else if (expected instanceof RegExp)
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predicate = function (actual) {
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return expected.test(actual.message)
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};
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else if (typeof expected === 'function')
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predicate = expected;
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else
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throw new Error('expected should be a predicate function or regexp');
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try {
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f();
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} catch (exception) {
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actual = exception;
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}
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if (actual && predicate(actual))
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this.ok({message: actual.message});
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else
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this.fail({type: "throws"});
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},
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isTrue: function (v, msg) {
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if (v)
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this.ok();
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else
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this.fail({type: "true", message: msg});
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},
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isFalse: function (v, msg) {
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if (v)
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this.fail({type: "true", message: msg});
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else
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this.ok();
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},
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isNull: function (v, msg) {
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if (v === null)
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this.ok();
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else
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this.fail({type: "null", message: msg});
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},
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isNotNull: function (v, msg) {
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if (v === null)
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this.fail({type: "true", message: msg});
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else
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this.ok();
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},
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isUndefined: function (v, msg) {
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if (v === undefined)
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this.ok();
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else
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this.fail({type: "undefined", message: msg});
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},
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isNaN: function (v, msg) {
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if (isNaN(v))
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this.ok();
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else
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this.fail({type: "NaN", message: msg});
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},
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include: function (s, v) {
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var pass = false;
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if (s instanceof Array)
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pass = _.any(s, function(it) {return _.isEqual(v, it);});
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else if (typeof s === "object")
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pass = v in s;
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else if (typeof s === "string")
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if (s.indexOf(v) > -1) {
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pass = true;
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}
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else
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/* fail -- not something that contains other things */;
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if (pass)
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this.ok();
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else {
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this.fail({type: "include", sequence: s, should_contain_value: v});
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}
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},
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// XXX should change to lengthOf to match vowsjs
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length: function (obj, expected_length) {
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if (obj.length === expected_length)
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this.ok();
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else
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this.fail({type: "length", expected: expected_length,
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actual: obj.length});
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},
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// EXPERIMENTAL way to compare two strings that results in
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// a nicer display in the test runner, e.g. for multiline
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// strings
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_stringEqual: function (actual, expected, message) {
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if (actual !== expected) {
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this.fail({type: "string_equal",
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message: message,
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expected: expected,
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actual: actual});
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} else {
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this.ok();
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}
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}
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});
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/******************************************************************************/
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/* TestCase */
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/******************************************************************************/
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TestCase = function (name, func, async) {
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var self = this;
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self.name = name;
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self.func = func;
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self.async = async || false;
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var nameParts = _.map(name.split(" - "), function(s) {
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return s.replace(/^\s*|\s*$/g, ""); // trim
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});
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self.shortName = nameParts.pop();
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nameParts.unshift("tinytest");
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self.groupPath = nameParts;
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};
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_.extend(TestCase.prototype, {
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// Run the test asynchronously, delivering results via onEvent;
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// then call onComplete() on success, or else onException(e) if the
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// test raised (or voluntarily reported) an exception.
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run: function (onEvent, onComplete, onException, stop_at_offset) {
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var self = this;
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var completed = false;
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var markComplete = function () {
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if (completed) {
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Meteor._debug("*** Test error -- test '" + self.name +
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"' returned multiple times.");
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return false;
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}
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completed = true;
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return true;
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};
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var wrappedOnEvent = function (e) {
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// If this trace prints, it means you ran some test.* function after the
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// test finished! Another symptom will be that the test will display as
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// "waiting" even when it counts as passed or failed.
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if (completed)
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console.trace("event after complete!");
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return onEvent(e);
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};
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var results = new TestCaseResults(self, wrappedOnEvent,
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function (e) {
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if (markComplete())
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onException(e);
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}, stop_at_offset);
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Meteor.defer(function () {
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try {
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if (self.async) {
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self.func(results, function () {
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if (markComplete())
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onComplete();
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});
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} else {
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self.func(results);
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if (markComplete())
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onComplete();
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}
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} catch (e) {
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if (markComplete())
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onException(e);
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}
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});
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}
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});
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/******************************************************************************/
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/* TestManager */
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/******************************************************************************/
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TestManager = function () {
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var self = this;
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self.tests = {};
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self.ordered_tests = [];
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};
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_.extend(TestManager.prototype, {
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addCase: function (test) {
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var self = this;
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if (test.name in self.tests)
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throw new Error(
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"Every test needs a unique name, but there are two tests named '" +
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test.name + "'");
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self.tests[test.name] = test;
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self.ordered_tests.push(test);
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},
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createRun: function (onReport, pathPrefix) {
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var self = this;
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return new TestRun(self, onReport, pathPrefix);
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}
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});
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// singleton
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TestManager = new TestManager;
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/******************************************************************************/
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/* TestRun */
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/******************************************************************************/
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TestRun = function (manager, onReport, pathPrefix) {
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var self = this;
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self.manager = manager;
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self.onReport = onReport;
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self.next_sequence_number = 0;
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self._pathPrefix = pathPrefix || [];
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_.each(self.manager.ordered_tests, function (test) {
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if (self._prefixMatch(test.groupPath))
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self._report(test);
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});
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};
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_.extend(TestRun.prototype, {
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_prefixMatch: function (testPath) {
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var self = this;
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for (var i = 0; i < self._pathPrefix.length; i++) {
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if (!testPath[i] || self._pathPrefix[i] !== testPath[i]) {
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return false;
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}
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}
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return true;
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},
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_runOne: function (test, onComplete, stop_at_offset) {
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var self = this;
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var startTime = (+new Date);
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if (self._prefixMatch(test.groupPath)) {
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test.run(function (event) {
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/* onEvent */
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self._report(test, event);
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}, function () {
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/* onComplete */
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var totalTime = (+new Date) - startTime;
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self._report(test, {type: "finish", timeMs: totalTime});
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onComplete && onComplete();
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}, function (exception) {
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/* onException */
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// XXX you want the "name" and "message" fields on the
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// exception, to start with..
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self._report(test, {
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type: "exception",
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details: {
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message: exception.message, // XXX empty???
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stack: exception.stack // XXX portability
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}
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});
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onComplete && onComplete();
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}, stop_at_offset);
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} else {
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onComplete && onComplete();
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}
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},
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run: function (onComplete) {
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var self = this;
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// create array of arrays of tests; synchronous tests in
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// different groups are run in parallel on client, async tests or
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// tests in different groups are run in sequence, as are all
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// tests on server
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var testGroups = _.values(
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_.groupBy(self.manager.ordered_tests,
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function(t) {
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if (Meteor.isServer)
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return "SERVER";
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if (t.async)
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return "ASYNC";
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return t.name.split(" - ")[0];
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}));
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if (! testGroups.length) {
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onComplete();
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} else {
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var groupsDone = 0;
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_.each(testGroups, function(tests) {
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var runNext = function () {
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if (tests.length) {
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self._runOne(tests.shift(), runNext);
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} else {
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groupsDone++;
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if (groupsDone >= testGroups.length)
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onComplete();
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}
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};
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runNext();
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});
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}
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},
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// An alternative to run(). Given the 'cookie' attribute of a
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// failure record, try to rerun that particular test up to that
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// failure, and then open the debugger.
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debug: function (cookie, onComplete) {
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var self = this;
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var test = self.manager.tests[cookie.name];
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if (!test)
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throw new Error("No such test '" + cookie.name + "'");
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self._runOne(test, onComplete, cookie.offset);
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},
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_report: function (test, event) {
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var self = this;
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if (event)
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var events = [_.extend({sequence: self.next_sequence_number++}, event)];
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else
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var events = [];
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self.onReport({
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groupPath: test.groupPath,
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test: test.shortName,
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events: events
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});
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}
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});
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/******************************************************************************/
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/* Public API */
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/******************************************************************************/
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Tinytest = {};
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Tinytest.add = function (name, func) {
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TestManager.addCase(new TestCase(name, func));
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};
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Tinytest.addAsync = function (name, func) {
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TestManager.addCase(new TestCase(name, func, true));
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};
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// Run every test, asynchronously. Runs the test in the current
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// process only (if called on the server, runs the tests on the
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// server, and likewise for the client.) Report results via
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// onReport. Call onComplete when it's done.
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//
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Tinytest._runTests = function (onReport, onComplete, pathPrefix) {
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var testRun = TestManager.createRun(onReport, pathPrefix);
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testRun.run(onComplete);
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};
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// Run just one test case, and stop the debugger at a particular
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// error, all as indicated by 'cookie', which will have come from a
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// failure event output by _runTests.
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//
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Tinytest._debugTest = function (cookie, onReport, onComplete) {
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var testRun = TestManager.createRun(onReport);
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testRun.debug(cookie, onComplete);
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};
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