Failing test
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@ -256,4 +256,24 @@ describe('computeEvents', function () {
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expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
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});
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});
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describe('for a no-op but nonempty patch', function () {
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var oldM = new Mux.Mux();
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var pid1 = oldM.addStream(Patch.assert(["fieldContents", "initial", 7])).pid;
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var pid2 = oldM.addStream(Patch.sub(["fieldContents", __, __])).pid;
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var newM = oldM.shallowCopy();
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var updateStreamResult =
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newM.updateStream(pid1,
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Patch.retract(["fieldContents", __, __])
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.andThen(Patch.assert(["fieldContents", "initial", 7])));
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var events = Mux.computeEvents(oldM, newM, updateStreamResult);
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it('should send an empty patch to the subscriber', function () {
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expect(events.eventMap.size).to.be(1);
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expect(events.eventMap.has(pid2)).to.be(true);
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checkPrettyPatch(events.eventMap.get(pid2).strip(),
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['::: nothing'],
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['::: nothing']);
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});
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});
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});
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