47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
var pipeline = require('../');
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var through = require('through2');
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var test = require('tape');
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test('shift', function (t) {
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var expected = {};
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expected.a = [ 3, 4 ];
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expected.b = [ 300, 400, 5, 6 ];
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expected.c = [ 310, 410, 15, 16 ];
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expected.output = [ 155, 205, 15/2, 8 ];
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t.plan(2 + 4 + 4 + 4);
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var a = through.obj(function (x, enc, next) {
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var ex = expected.a.shift();
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t.equal(x, ex, 'a');
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this.push(x * 100);
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next();
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});
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var b = through.obj(function (x, enc, next) {
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var ex = expected.b.shift();
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t.equal(x, ex, 'b');
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if (expected.b.length === 2) p.shift()
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this.push(x + 10);
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next();
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});
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var c = through.obj(function (x, enc, next) {
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var ex = expected.c.shift();
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t.equal(x, ex, 'c');
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this.push(x / 2);
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next();
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});
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var p = pipeline.obj([ a, b, c ]);
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p.pipe(through.obj(function (x, enc, next) {
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var ex = expected.output.shift();
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t.equal(x, ex);
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next();
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}));
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p.write(3);
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p.write(4);
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p.write(5);
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p.write(6);
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p.end();
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});
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