feat(tests): change event-stream to stream-mock

Connects pelias/pelias#801

package.json

@@ -59,7 +59,7 @@
   },
   "devDependencies": {
     "deep-diff": "^1.0.0",
-    "event-stream": "^4.0.0",
+    "stream-mock": "^2.0.3",
     "pelias-mock-logger": "^1.1.0",
     "precommit-hook": "^3.0.0",
     "proxyquire": "^2.0.0",

test/importTest.js

@@ -2,35 +2,20 @@ var fs = require( 'fs' );
 var path = require( 'path');
 
 var tape = require( 'tape' );
-var event_stream = require( 'event-stream' );
 var deep = require( 'deep-diff' );
 const proxyquire = require('proxyquire').noCallThru();
 const through = require('through2');
+const stream_mock = require('stream-mock');
 
 tape('functional test importing Singapore', function(t) {
-  var basePath = path.resolve(__dirname);
-  var expectedPath = path.join(basePath, 'data', 'expected.json');
-  var inputFile = path.join(basePath, 'data', 'SG.zip');
+  const basePath = path.resolve(__dirname);
+  const expectedPath = path.join(basePath, 'data', 'expected.json');
+  const inputFile = path.join(basePath, 'data', 'SG.zip');
 
-  var sourceStream = fs.createReadStream(inputFile);
-  var expected = JSON.parse(fs.readFileSync(expectedPath));
+  const sourceStream = fs.createReadStream(inputFile);
+  const expected = JSON.parse(fs.readFileSync(expectedPath));
 
-  var endStream = event_stream.writeArray(function(err, results) {
-    // uncomment this to write the actual results to the expected file
-    // make sure they look ok though. comma left off so jshint reminds you
-    // not to commit this line
-    // fs.writeFileSync(expectedPath, JSON.stringify(results, null, 2))
-
-    var diff = deep(expected, results);
-
-    if (diff) {
-      t.fail('expected and actual output are the same');
-      console.error(diff);
-    } else {
-      t.pass('expected and actual output are the same');
-    }
-    t.end();
-  });
+  const endStream = new stream_mock.ObjectWritableMock();
 
   // need to mock out pelias-wof-admin-lookup because it reads its own config
   // and we don't want an actual adminLookup stream
@@ -43,4 +28,23 @@ tape('functional test importing Singapore', function(t) {
   } );
 
   importModule(sourceStream, endStream);
+
+  endStream.on('finish', function() {
+    const actual = endStream.data;
+
+    // uncomment this to write the actual results to the expected file
+    // make sure they look ok though. semicolon left off so jshint reminds you
+    // not to commit this line
+    // fs.writeFileSync(expectedPath, JSON.stringify(actual, null, 2))
+
+    const diff = deep(expected, actual);
+
+    if (diff) {
+      t.fail('expected and actual output are the same');
+      console.error(diff);
+    } else {
+      t.pass('expected and actual output are the same');
+    }
+    t.end();
+  });
 });

test/streams/layerMappingStreamTest.js

@@ -1,14 +1,16 @@
 var tape = require('tape');
-var event_stream = require('event-stream');
 
 var layerMappingStream = require('../../lib/streams/layerMappingStream');
 var featureCodeToLayer = layerMappingStream.featureCodeToLayer;
 
-function test_stream(input, testedStream, callback) {
-    var input_stream = event_stream.readArray(input);
-    var destination_stream = event_stream.writeArray(callback);
+const stream_mock = require('stream-mock');
 
-    input_stream.pipe(testedStream).pipe(destination_stream);
+function test_stream(input, testedStream, callback) {
+  const reader = new stream_mock.ObjectReadableMock(input);
+  const writer = new stream_mock.ObjectWritableMock();
+  writer.on('error', (e) => callback(e));
+  writer.on('finish', () => callback(null, writer.data));
+  reader.pipe(testedStream).pipe(writer);
 }
 
 tape('featureCodeToLayer', function(test) {

test/streams/overrideLookedUpLocalityAndLocaladmin.js

@@ -1,16 +1,19 @@
 var tape = require('tape');
-var event_stream = require('event-stream');
 var Document = require('pelias-model').Document;
 
 var overrideLookedUpLocalityAndLocaladmin = require('../../lib/streams/overrideLookedUpLocalityAndLocaladmin');
 
-function test_stream(input, testedStream, callback) {
-    var input_stream = event_stream.readArray(input);
-    var destination_stream = event_stream.writeArray(callback);
+const stream_mock = require('stream-mock');
 
-    input_stream.pipe(testedStream).pipe(destination_stream);
+function test_stream(input, testedStream, callback) {
+  const reader = new stream_mock.ObjectReadableMock(input);
+  const writer = new stream_mock.ObjectWritableMock();
+  writer.on('error', (e) => callback(e));
+  writer.on('finish', () => callback(null, writer.data));
+  reader.pipe(testedStream).pipe(writer);
 }
 
+
 tape('peliasDocGenerator', function(test) {
   test.test('document with layer=locality should overwrite locality parent with name and id', function(t) {
     var input = new Document( 'geonames', 'locality', '17' )

test/streams/peliasDocGeneratorTest.js

@@ -1,16 +1,18 @@
 var tape = require('tape');
 var Document = require('pelias-model').Document;
 var peliasDocGenerator = require('../../lib/streams/peliasDocGenerator');
-var event_stream = require('event-stream');
 const proxyquire = require('proxyquire').noCallThru();
+const stream_mock = require('stream-mock');
 
 function test_stream(input, testedStream, callback) {
-    var input_stream = event_stream.readArray(input);
-    var destination_stream = event_stream.writeArray(callback);
-
-    input_stream.pipe(testedStream).pipe(destination_stream);
+  const reader = new stream_mock.ObjectReadableMock(input);
+  const writer = new stream_mock.ObjectWritableMock();
+  writer.on('error', (e) => callback(e));
+  writer.on('finish', () => callback(null, writer.data));
+  reader.pipe(testedStream).pipe(writer);
 }
 
+
 tape('peliasDocGenerator', function(test) {
   test.test('basic data should should be returned as Document objects with only ' +
               'name and centroid supplied', function(t) {