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Make mysql work for some special cases (database case, views, foreign keys) #55

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Make mysql work for some special cases (database case, views, foreign keys) #55

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6b8f85d
Make mysql work for databases that are not all lowercase
Feb 28, 2017
d68d41f
Don't try to truncate views in MySQL
Mar 1, 2017
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71 changes: 40 additions & 31 deletions lib/database-cleaner.js
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Original file line number Diff line number Diff line change
Expand Up @@ -47,45 +47,54 @@ var DatabaseCleaner = module.exports = function(type, config) {
};

cleaner['mysql'] = function(db, callback) {
db.query('show tables', function(err, tables) {
db.query('SET FOREIGN_KEY_CHECKS = 0', function(err) {
if (err) return callback(err);

var database = db.config.connectionConfig ?
db.config.connectionConfig.database : db.config.database;
db.query('show global variables like "lower_case_table_names"', function(err, values) {

var count = 0;
var length = tables.length;
var tableName = 'Tables_in_' + database;
var skippedTables = config.mysql.skipTables;
var strategy = config.mysql.strategy || 'deletion';
if (strategy !== 'deletion' && strategy !== 'truncation') {
return callback(new Error('Invalid deletion strategy: ' + strategy));
}
var lowerCaseTableNames = values[0]['Value'] === 2;

if(length === 0) {
// The database is empty
return callback();
}
db.query('show full tables where Table_Type != "VIEW"', function(err, tables) {
if (err) return callback(err);

tables.forEach(function(table) {
if (skippedTables.indexOf(table[tableName]) === -1) {
var statement = strategy === 'deletion' ? 'DELETE FROM ' : 'TRUNCATE TABLE '
db.query(statement + table[tableName], function(err) {
if(err) {
return callback(err);
}
var database = db.config.connectionConfig ?
db.config.connectionConfig.database : db.config.database;

count++;
if (count >= length) {
callback();
var count = 0;
var length = tables.length;
var tableName = 'Tables_in_' + (lowerCaseTableNames ? database.toLowerCase() : database);
var skippedTables = config.mysql.skipTables;
var strategy = config.mysql.strategy || 'deletion';
if (strategy !== 'deletion' && strategy !== 'truncation') {
return callback(new Error('Invalid deletion strategy: ' + strategy));
}

if(length === 0) {
// The database is empty
return callback();
}

tables.forEach(function(table) {
if (skippedTables.indexOf(table[tableName]) === -1) {
var statement = (strategy === 'deletion') ? 'DELETE FROM ' : 'TRUNCATE TABLE ';
db.query(statement + table[tableName], function(err) {
if(err) {
return callback(err);
}

count++;
if (count >= length) {
callback();
}
});
} else {
count++;
if (count >= length) {
callback();
}
}
});
} else {
count++;
if (count >= length) {
callback();
}
}
});
});
});
};
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21 changes: 9 additions & 12 deletions test/mysql.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,25 +4,22 @@ var should = require('should'),
async = require('async'),
databaseCleaner;

var config = {
host: process.env.MYSQL_HOST || 'localhost',
user: 'root',
database: 'database_cleaner'
}
var mysql = require('mysql'),
client = new mysql.createConnection({
host: process.env.MYSQL_HOST || 'localhost',
user: 'root',
database: 'database_cleaner'
}),
pool = new mysql.createPool({
host: process.env.MYSQL_HOST || 'localhost',
user: 'root',
database: 'database_cleaner'
});
client = new mysql.createConnection(config),
pool = new mysql.createPool(config);

var queryClient = _.curry(function(query, values, next) {
client.query(query, values, next);
});

describe('mysql', function() {
beforeEach(function(done) {
client.query('CREATE DATABASE database_cleaner', function(err) {
client.query('CREATE DATABASE ' + config.database, function(err) {
if (err && err.number != mysql.ERROR_DB_CREATE_EXISTS) {
throw err;
}
Expand Down Expand Up @@ -145,7 +142,7 @@ describe('mysql', function() {

describe('mysql empty', function() {
beforeEach(function(done) {
client.query('CREATE DATABASE database_cleaner', function(err) {
client.query('CREATE DATABASE ' + config.database, function(err) {
if (err && err.number != mysql.ERROR_DB_CREATE_EXISTS) {
throw err;
}
Expand Down