42 lines
743 B
JavaScript
42 lines
743 B
JavaScript
"use strict"
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var o = require("../../ospec/ospec")
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var stream = require("../stream")
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o.spec("scanMerge", function() {
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o("defaults to seed", function() {
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var parent1 = stream()
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var parent2 = stream()
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var child = stream.scanMerge([
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[parent1, function(out, p1) {
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return out + p1
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}],
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[parent2, function(out, p2) {
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return out + p2
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}]
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], -10)
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o(child()).equals(-10)
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})
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o("accumulates as expected", function() {
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var parent1 = stream()
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var parent2 = stream()
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var child = stream.scanMerge([
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[parent1, function(out, p1) {
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return out + p1
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}],
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[parent2, function(out, p2) {
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return out + p2 + p2
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}]
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], "a")
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parent1("b")
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parent2("c")
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parent1("b")
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o(child()).equals("abccb")
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})
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})
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