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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+'use strict';
+
+const { on, emit } = require("sdk/event/core");
+const { filter, map, merge, expand, pipe, stripListeners } = require("sdk/event/utils");
+const $ = require("./event/helpers");
+
+function isEven(x) {
+ return !(x % 2);
+}
+function inc(x) {
+ return x + 1;
+}
+
+exports["test filter events"] = function(assert) {
+ let input = {};
+ let evens = filter(input, isEven);
+ let actual = [];
+ on(evens, "data", e => actual.push(e));
+
+ [1, 2, 3, 4, 5, 6, 7].forEach(x => emit(input, "data", x));
+
+ assert.deepEqual(actual, [2, 4, 6], "only even numbers passed through");
+};
+
+exports["test filter emits"] = $.emits(function(input, assert) {
+ let output = filter(input, isEven);
+ assert(output, [1, 2, 3, 4, 5], [2, 4], "this is `output` & evens passed");
+});;
+
+exports["test filter reg once"] = $.registerOnce(function(input, assert) {
+ assert(filter(input, isEven), [1, 2, 3, 4, 5, 6], [2, 4, 6],
+ "listener can be registered only once");
+});
+
+exports["test filter ignores new"] = $.ignoreNew(function(input, assert) {
+ assert(filter(input, isEven), [1, 2, 3], [2],
+ "new listener is ignored")
+});
+
+exports["test filter is FIFO"] = $.FIFO(function(input, assert) {
+ assert(filter(input, isEven), [1, 2, 3, 4], [2, 4],
+ "listeners are invoked in fifo order")
+});
+
+exports["test map events"] = function(assert) {
+ let input = {};
+ let incs = map(input, inc);
+ let actual = [];
+ on(incs, "data", e => actual.push(e));
+
+ [1, 2, 3, 4].forEach(x => emit(input, "data", x));
+
+ assert.deepEqual(actual, [2, 3, 4, 5], "all numbers were incremented");
+};
+
+exports["test map emits"] = $.emits(function(input, assert) {
+ let output = map(input, inc);
+ assert(output, [1, 2, 3], [2, 3, 4], "this is `output` & evens passed");
+});
+
+exports["test map reg once"] = $.registerOnce(function(input, assert) {
+ assert(map(input, inc), [1, 2, 3], [2, 3, 4],
+ "listener can be registered only once");
+});
+
+exports["test map ignores new"] = $.ignoreNew(function(input, assert) {
+ assert(map(input, inc), [1], [2],
+ "new listener is ignored")
+});
+
+exports["test map is FIFO"] = $.FIFO(function(input, assert) {
+ assert(map(input, inc), [1, 2, 3, 4], [2, 3, 4, 5],
+ "listeners are invoked in fifo order")
+});
+
+exports["test merge stream[stream]"] = function(assert) {
+ let a = {}, b = {}, c = {};
+ let inputs = {};
+ let actual = [];
+
+ on(merge(inputs), "data", $ => actual.push($))
+
+ emit(inputs, "data", a);
+ emit(a, "data", "a1");
+ emit(inputs, "data", b);
+ emit(b, "data", "b1");
+ emit(a, "data", "a2");
+ emit(inputs, "data", c);
+ emit(c, "data", "c1");
+ emit(c, "data", "c2");
+ emit(b, "data", "b2");
+ emit(a, "data", "a3");
+
+ assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
+ "all inputs data merged into one");
+};
+
+exports["test merge array[stream]"] = function(assert) {
+ let a = {}, b = {}, c = {};
+ let inputs = {};
+ let actual = [];
+
+ on(merge([a, b, c]), "data", $ => actual.push($))
+
+ emit(a, "data", "a1");
+ emit(b, "data", "b1");
+ emit(a, "data", "a2");
+ emit(c, "data", "c1");
+ emit(c, "data", "c2");
+ emit(b, "data", "b2");
+ emit(a, "data", "a3");
+
+ assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
+ "all inputs data merged into one");
+};
+
+exports["test merge emits"] = $.emits(function(input, assert) {
+ let evens = filter(input, isEven)
+ let output = merge([evens, input]);
+ assert(output, [1, 2, 3], [1, 2, 2, 3], "this is `output` & evens passed");
+});
+
+
+exports["test merge reg once"] = $.registerOnce(function(input, assert) {
+ let evens = filter(input, isEven)
+ let output = merge([input, evens]);
+ assert(output, [1, 2, 3, 4], [1, 2, 2, 3, 4, 4],
+ "listener can be registered only once");
+});
+
+exports["test merge ignores new"] = $.ignoreNew(function(input, assert) {
+ let evens = filter(input, isEven)
+ let output = merge([input, evens])
+ assert(output, [1], [1],
+ "new listener is ignored")
+});
+
+exports["test marge is FIFO"] = $.FIFO(function(input, assert) {
+ let evens = filter(input, isEven)
+ let output = merge([input, evens])
+
+ assert(output, [1, 2, 3, 4], [1, 2, 2, 3, 4, 4],
+ "listeners are invoked in fifo order")
+});
+
+exports["test expand"] = function(assert) {
+ let a = {}, b = {}, c = {};
+ let inputs = {};
+ let actual = [];
+
+ on(expand(inputs, $ => $()), "data", $ => actual.push($))
+
+ emit(inputs, "data", () => a);
+ emit(a, "data", "a1");
+ emit(inputs, "data", () => b);
+ emit(b, "data", "b1");
+ emit(a, "data", "a2");
+ emit(inputs, "data", () => c);
+ emit(c, "data", "c1");
+ emit(c, "data", "c2");
+ emit(b, "data", "b2");
+ emit(a, "data", "a3");
+
+ assert.deepEqual(actual, ["a1", "b1", "a2", "c1", "c2", "b2", "a3"],
+ "all inputs data merged into one");
+};
+
+exports["test pipe"] = function (assert, done) {
+ let src = {};
+ let dest = {};
+
+ let aneventCount = 0, multiargsCount = 0;
+ let wildcardCount = {};
+
+ on(dest, 'an-event', arg => {
+ assert.equal(arg, 'my-arg', 'piped argument to event');
+ ++aneventCount;
+ check();
+ });
+ on(dest, 'multiargs', (...data) => {
+ assert.equal(data[0], 'a', 'multiple arguments passed via pipe');
+ assert.equal(data[1], 'b', 'multiple arguments passed via pipe');
+ assert.equal(data[2], 'c', 'multiple arguments passed via pipe');
+ ++multiargsCount;
+ check();
+ });
+
+ on(dest, '*', (name, ...data) => {
+ wildcardCount[name] = (wildcardCount[name] || 0) + 1;
+ if (name === 'multiargs') {
+ assert.equal(data[0], 'a', 'multiple arguments passed via pipe, wildcard');
+ assert.equal(data[1], 'b', 'multiple arguments passed via pipe, wildcard');
+ assert.equal(data[2], 'c', 'multiple arguments passed via pipe, wildcard');
+ }
+ if (name === 'an-event')
+ assert.equal(data[0], 'my-arg', 'argument passed via pipe, wildcard');
+ check();
+ });
+
+ pipe(src, dest);
+
+ for (let i = 0; i < 3; i++)
+ emit(src, 'an-event', 'my-arg');
+
+ emit(src, 'multiargs', 'a', 'b', 'c');
+
+ function check () {
+ if (aneventCount === 3 && multiargsCount === 1 &&
+ wildcardCount['an-event'] === 3 &&
+ wildcardCount['multiargs'] === 1)
+ done();
+ }
+};
+
+exports["test pipe multiple targets"] = function (assert) {
+ let src1 = {};
+ let src2 = {};
+ let middle = {};
+ let dest = {};
+
+ pipe(src1, middle);
+ pipe(src2, middle);
+ pipe(middle, dest);
+
+ let middleFired = 0;
+ let destFired = 0;
+ let src1Fired = 0;
+ let src2Fired = 0;
+
+ on(src1, '*', () => src1Fired++);
+ on(src2, '*', () => src2Fired++);
+ on(middle, '*', () => middleFired++);
+ on(dest, '*', () => destFired++);
+
+ emit(src1, 'ev');
+ assert.equal(src1Fired, 1, 'event triggers in source in pipe chain');
+ assert.equal(middleFired, 1, 'event passes through the middle of pipe chain');
+ assert.equal(destFired, 1, 'event propagates to end of pipe chain');
+ assert.equal(src2Fired, 0, 'event does not fire on alternative chain routes');
+
+ emit(src2, 'ev');
+ assert.equal(src2Fired, 1, 'event triggers in source in pipe chain');
+ assert.equal(middleFired, 2,
+ 'event passes through the middle of pipe chain from different src');
+ assert.equal(destFired, 2,
+ 'event propagates to end of pipe chain from different src');
+ assert.equal(src1Fired, 1, 'event does not fire on alternative chain routes');
+
+ emit(middle, 'ev');
+ assert.equal(middleFired, 3,
+ 'event triggers in source of pipe chain');
+ assert.equal(destFired, 3,
+ 'event propagates to end of pipe chain from middle src');
+ assert.equal(src1Fired, 1, 'event does not fire on alternative chain routes');
+ assert.equal(src2Fired, 1, 'event does not fire on alternative chain routes');
+};
+
+exports['test stripListeners'] = function (assert) {
+ var options = {
+ onAnEvent: noop1,
+ onMessage: noop2,
+ verb: noop1,
+ value: 100
+ };
+
+ var stripped = stripListeners(options);
+ assert.ok(stripped !== options, 'stripListeners should return a new object');
+ assert.equal(options.onAnEvent, noop1, 'stripListeners does not affect original');
+ assert.equal(options.onMessage, noop2, 'stripListeners does not affect original');
+ assert.equal(options.verb, noop1, 'stripListeners does not affect original');
+ assert.equal(options.value, 100, 'stripListeners does not affect original');
+
+ assert.ok(!stripped.onAnEvent, 'stripListeners removes `on*` values');
+ assert.ok(!stripped.onMessage, 'stripListeners removes `on*` values');
+ assert.equal(stripped.verb, noop1, 'stripListeners leaves not `on*` values');
+ assert.equal(stripped.value, 100, 'stripListeners leaves not `on*` values');
+
+ function noop1 () {}
+ function noop2 () {}
+};
+
+require('sdk/test').run(exports);