108 lines
3.7 KiB
JavaScript
108 lines
3.7 KiB
JavaScript
/* Copyright (c) 2017, 2023, Oracle and/or its affiliates. */
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/******************************************************************************
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*
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* This software is dual-licensed to you under the Universal Permissive License
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* (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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* 2.0 as shown at https://www.apache.org/licenses/LICENSE-2.0. You may choose
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* either license.
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*
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* If you elect to accept the software under the Apache License, Version 2.0,
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* the following applies:
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* NAME
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* 105. streamErrorEvent.js
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*
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* DESCRIPTION
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* Testing Stream on 'error' event.
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* It tries to stream LOB into a read-only file which triggers error.
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*
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*****************************************************************************/
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'use strict';
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const oracledb = require('oracledb');
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const fs = require('fs');
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const assert = require('assert');
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const dbConfig = require('./dbconfig.js');
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describe('105. streamErrorEvent.js', function() {
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let connection = null;
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before(async function() {
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connection = await oracledb.getConnection(dbConfig);
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}); // before
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after(async function() {
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await connection.close();
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}); // after
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it('105.1 triggers stream error event', async function() {
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const rofile = "./test-read-only.txt";
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const tableName = "nodb_tab_stream_err";
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fs.writeFileSync(rofile, "This is a read-only file.");
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fs.chmodSync(rofile, '0444');
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let sql = "BEGIN \n" +
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" DECLARE \n" +
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" e_table_missing EXCEPTION; \n" +
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" PRAGMA EXCEPTION_INIT(e_table_missing, -00942); \n" +
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" BEGIN \n" +
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" EXECUTE IMMEDIATE('DROP TABLE " + tableName + " PURGE'); \n" +
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" EXCEPTION \n" +
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" WHEN e_table_missing \n" +
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" THEN NULL; \n" +
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" END; \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" CREATE TABLE " + tableName + " ( \n" +
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" id NUMBER, \n" +
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" lob CLOB \n" +
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" ) \n" +
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" '); \n" +
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"END; ";
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await connection.execute(sql);
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sql = "insert into " + tableName + " values (:i, :c)";
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const bindVar = {
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i: { val: 89, type: oracledb.NUMBER },
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c: { val: "Changjie tries to trigger Stream error events.", type: oracledb.STRING }
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};
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const option = { autoCommit: true };
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await connection.execute(
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sql,
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bindVar,
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option);
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sql = "select lob from " + tableName;
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let result = null;
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result = await connection.execute(sql);
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await new Promise((resolve, reject) => {
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const lob = result.rows[0][0];
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lob.on('error', reject);
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lob.on('close', resolve); // Here it returns.
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const outStream = fs.createWriteStream(rofile);
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outStream.on('error', function(err) {
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assert(err);
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assert.strictEqual(err.syscall, 'open');
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});
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lob.pipe(outStream);
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});
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sql = "DROP TABLE " + tableName + " PURGE";
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await connection.execute(sql);
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fs.unlinkSync(rofile);
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});
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});
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