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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,22 @@ | ||
'use strict'; | ||
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var concat = require('./concat'); | ||
var fromArray = require('./fromarray'); | ||
var isScheduler = require('../scheduler').isScheduler; | ||
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global._Rx || (global._Rx = {}); | ||
if (!global._Rx.immediateScheduler) { | ||
require('../scheduler/immediatescheduler'); | ||
} | ||
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module.exports = function startWith () { | ||
var source = arguments[0], scheduler, start = 1; | ||
if (isScheduler(arguments[1])) { | ||
scheduler = arguments[1]; | ||
start = 2; | ||
} else { | ||
scheduler = global._Rx.immediateScheduler; | ||
} | ||
for(var args = [], i = start, len = arguments.length; i < len; i++) { args.push(arguments[i]); } | ||
return concat(fromArray(args, scheduler), source); | ||
}; |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,175 @@ | ||
'use strict'; | ||
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var test = require('tape'); | ||
var Observable = require('../observable'); | ||
var TestScheduler = require('../testing/testscheduler'); | ||
var reactiveAssert = require('../testing/reactiveassert'); | ||
var ReactiveTest = require('../testing/reactivetest'); | ||
var onNext = ReactiveTest.onNext, | ||
onError = ReactiveTest.onError, | ||
onCompleted = ReactiveTest.onCompleted; | ||
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Observable.addToPrototype({ | ||
startWith: require('../observable/startwith') | ||
}); | ||
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global._Rx || (global._Rx = {}); | ||
if (!global._Rx.currentThreadScheduler) { | ||
require('../scheduler/currentthreadscheduler'); | ||
} | ||
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test('Observable#startWith normal', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(1); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(200, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith never', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith empty', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onCompleted(250) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1), | ||
onCompleted(250) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith one', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith multiple', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onNext(220, 4), | ||
onCompleted(250) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1, 2, 3); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1), | ||
onNext(202, 2), | ||
onNext(203, 3), | ||
onNext(220, 4), | ||
onCompleted(250) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith error', function (t) { | ||
var error = new Error(); | ||
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var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onError(250, error) | ||
); | ||
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var results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1, 2, 3); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1), | ||
onNext(202, 2), | ||
onNext(203, 3), | ||
onError(250, error) | ||
]); | ||
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t.end(); | ||
}); | ||
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test('Observable#startWith is unaffected by currentThread scheduler', function (t) { | ||
var scheduler = new TestScheduler(); | ||
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var xs = scheduler.createHotObservable( | ||
onNext(150, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
); | ||
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var results; | ||
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global._Rx.currentThreadScheduler.schedule(null, function () { | ||
results = scheduler.startScheduler(function () { | ||
return xs.startWith(scheduler, 1); | ||
}); | ||
}); | ||
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reactiveAssert(t, results.messages, [ | ||
onNext(201, 1), | ||
onNext(220, 2), | ||
onCompleted(250) | ||
]); | ||
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t.end(); | ||
}); |