| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| 'use strict'; |
| |
| const assert = require('assert'); |
| const Bytecode = require('../../lib/process/bytecode'); |
| const graphModule = require('../../lib/structure/graph'); |
| const helper = require('../helper'); |
| const t = require('../../lib/process/traversal'); |
| |
| let client; |
| |
| describe('Client', function () { |
| before(function () { |
| client = helper.getClient('gmodern'); |
| return client.open(); |
| }); |
| after(function () { |
| return client.close(); |
| }); |
| describe('#submit()', function () { |
| it('should send bytecode', function () { |
| return client.submit(new Bytecode().addStep('V', []).addStep('tail', [])) |
| .then(function (result) { |
| assert.ok(result); |
| assert.strictEqual(result.length, 1); |
| assert.ok(result.first().object instanceof graphModule.Vertex); |
| }); |
| }); |
| it('should send and parse a script', function () { |
| return client.submit('g.V().tail()') |
| .then(function (result) { |
| assert.ok(result); |
| assert.strictEqual(result.length, 1); |
| assert.ok(result.first() instanceof graphModule.Vertex); |
| }); |
| }); |
| it('should send and parse a script with bindings', function () { |
| return client.submit('x + x', { x: 3 }) |
| .then(function (result) { |
| assert.ok(result); |
| assert.strictEqual(result.first(), 6); |
| }); |
| }); |
| it('should send and parse a script with non-native javascript bindings', function () { |
| return client.submit('card.class.simpleName + ":" + card', { card: t.cardinality.set } ) |
| .then(function (result) { |
| assert.ok(result); |
| assert.strictEqual(result.first(), 'Cardinality:set'); |
| }); |
| }); |
| |
| it('should retrieve the attributes', () => { |
| return client.submit(new Bytecode().addStep('V', []).addStep('tail', [])) |
| .then(rs => { |
| assert.ok(rs.attributes instanceof Map); |
| assert.ok(rs.attributes.get('host')); |
| }); |
| }); |
| |
| it('should be able to stream results from the gremlin server', (done) => { |
| const output = []; |
| let calls = 0; |
| const readable = client.stream('g.V().limit(3)', {}, { batchSize: 2 }); |
| |
| readable.on('data', (data) => { |
| calls += 1; |
| data.toArray().forEach(v => output.push(v)) |
| }) |
| |
| readable.on('end', () => { |
| assert.strictEqual(calls, 2); // limit of 3 with batchSize of 2 should be two function calls |
| assert.strictEqual(output.length, 3); |
| assert.ok(output[0] instanceof graphModule.Vertex); |
| done(); |
| }) |
| }); |
| |
| it("should be able to iterate stream results async", async () => { |
| const output = []; |
| let calls = 0; |
| const readable = client.stream("g.V().limit(3)", {}, { batchSize: 2 }); |
| |
| for await (const result of readable) { |
| calls += 1; |
| result.toArray().forEach((v) => output.push(v)); |
| } |
| |
| assert.strictEqual(calls, 2); // limit of 3 with batchSize of 2 should be two function calls |
| assert.strictEqual(output.length, 3); |
| assert.ok(output[0] instanceof graphModule.Vertex); |
| }); |
| |
| it("should reject pending traversal promises if connection closes", async () => { |
| const closingClient = helper.getClient('gmodern'); |
| await closingClient.open(); |
| const timeout = 10000; |
| const startTime = Date.now(); |
| let isRejected = false; |
| |
| const pending = async function submitTraversals() { |
| while (Date.now() < startTime + timeout) { |
| try { |
| await closingClient.submit(new Bytecode().addStep('V', []).addStep('tail', [])); |
| } catch (e) { |
| isRejected = true; |
| return; |
| } |
| } |
| }; |
| const pendingPromise = pending(); |
| |
| await closingClient.close(); |
| await pendingPromise; |
| assert.strictEqual(isRejected, true); |
| }); |
| |
| it("should end streams on traversals if connection closes", async () => { |
| const closingClient = helper.getClient('gmodern'); |
| await closingClient.open(); |
| let isRejected = false; |
| |
| const readable = client.stream('g.V().limit(3)', {}, { batchSize: 2 }); |
| |
| readable.on('end', () => { |
| isRejected = true; |
| }); |
| |
| await closingClient.close(); |
| for await (const result of readable) { |
| // Consume the stream |
| } |
| |
| assert.strictEqual(isRejected, true); |
| }); |
| }); |
| }); |