init

node_modules/stream-splicer/test/pop.js

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+var pipeline = require('../');
+var through = require('through2');
+var split = require('split');
+var concat = require('concat-stream');
+var test = require('tape');
+
+test('pop', function (t) {
+    var expected = {};
+    expected.replacer = [ '333', '444' ];
+    
+    t.plan(3);
+    
+    var a = split();
+    var b = through.obj(function (row, enc, next) {
+        this.push(JSON.parse(row));
+        next();
+    });
+    var c = through.obj(function (row, enc, next) {
+        this.push(row.x);
+        next();
+    });
+    var d = through.obj(function (x, enc, next) {
+        this.push(String(x * 111));
+        next();
+    });
+    var replacer = through(function (buf, enc, next) {
+        var ex = expected.replacer.shift();
+        t.equal(buf.toString(), ex);
+        this.push(buf.toString('hex') + '\n');
+        if (expected.replacer.length === 0) {
+            stream.pop();
+        }
+        next();
+    });
+    
+    var stream = pipeline([ a, b, c, d, replacer ]);
+    stream.pipe(concat(function (body) {
+        t.deepEqual(body.toString(), '333333\n343434\n555666');
+    }));
+    
+    stream.write('{"x":3}\n');
+    stream.write('{"x":4}\n');
+    stream.write('{"x":5}\n');
+    stream.write('{"x":6}');
+    stream.end();
+});