Revert "Removed support.js as it's no longer required, and improved Makefile."

This reverts commit c9d6aff7.

Makefile

 REPORTER ?= dot
-TESTS = $(shell find ./test/* -name "*.test.js")
 
-sqlite:
-	DIALECT=sqlite
+test:
 	@./node_modules/mocha/bin/mocha \
 		--colors \
 		--reporter $(REPORTER) \
-		$(TESTS)
+		$(shell find ./test/* -name "*.test.js")
 
-mysql:
-	DIALECT=mysql
-	@./node_modules/mocha/bin/mocha \
-		--colors \
-		--reporter $(REPORTER) \
-		$(TESTS)
-
-.PHONY: sqlite mysql
+.PHONY: test

test/support.js

+var fs        = require('fs')
+  , Sequelize = require(__dirname + "/../index")
+  , DataTypes = require(__dirname + "/../lib/data-types")
+  , config    = require(__dirname + "/config/config")
+
+var Support = {
+  Sequelize: Sequelize,
+
+  initTests: function(options) {
+    var sequelize = this.createSequelizeInstance(options)
+
+    this.clearDatabase(sequelize, function() {
+      if (options.context) {
+        options.context.sequelize = sequelize
+      }
+
+      if (options.beforeComplete) {
+        options.beforeComplete(sequelize, DataTypes)
+      }
+
+      if (options.onComplete) {
+        options.onComplete(sequelize, DataTypes)
+      }
+    })
+  },
+
+  createSequelizeInstance: function(options) {
+    options = options || {}
+
+    options.dialect = options.dialect || 'mysql'
+    options.logging = (options.hasOwnProperty('logging') ? options.logging : false)
+    options.pool    = options.pool || config.pool
+
+    var sequelizeOptions = {
+      logging: options.logging,
+      dialect: options.dialect,
+      port:    options.port || process.env.SEQ_PORT || config[options.dialect].port,
+      pool:    options.pool
+    }
+
+    if (!!options.host) {
+      sequelizeOptions.host = options.host
+    }
+
+    if (!!options.define) {
+      sequelizeOptions.define = options.define
+    }
+
+    if (process.env.DIALECT === 'postgres-native') {
+      sequelizeOptions.native = true
+    }
+
+    return this.getSequelizeInstance(
+      process.env.SEQ_DB || config[options.dialect].database,
+      process.env.SEQ_USER  || process.env.SEQ_USERNAME || config[options.dialect].username,
+      process.env.SEQ_PW    || process.env.SEQ_PASSWORD || config[options.dialect].password,
+      sequelizeOptions
+    )
+  },
+
+  getSequelizeInstance: function(db, user, pass, options) {
+    return new Sequelize(db, user, pass, options)
+  },
+
+  clearDatabase: function(sequelize, callback) {
+    sequelize
+      .getQueryInterface()
+      .dropAllTables()
+      .success(function() {
+        sequelize.daoFactoryManager.daos = []
+        callback && callback()
+      })
+      .error(function(err) { console.log(err) })
+  },
+
+  getSupportedDialects: function() {
+    return fs.readdirSync(__dirname + '/../lib/dialects').filter(function(file) {
+      return ((file.indexOf('.js') === -1) && (file.indexOf('abstract') === -1))
+    })
+  },
+
+  checkMatchForDialects: function(dialect, value, expectations) {
+    if (!!expectations[dialect]) {
+      expect(value).to.match(expectations[dialect])
+    } else {
+      throw new Error('Undefined expectation for "' + dialect + '"!')
+    }
+  },
+
+  getTestDialect: function() {
+    var envDialect = process.env.DIALECT || 'mysql'
+
+    if (envDialect === 'postgres-native') {
+      envDialect = 'postgres'
+    }
+
+    if (this.getSupportedDialects().indexOf(envDialect) === -1) {
+      throw new Error('The dialect you have passed is unknown. Did you really mean: ' + envDialect)
+    }
+
+    return envDialect
+  },
+
+  getTestDialectTeaser: function(moduleName) {
+    var dialect = this.getTestDialect()
+
+    if (process.env.DIALECT === 'postgres-native') {
+      dialect = 'postgres-native'
+    }
+
+    return "[" + dialect.toUpperCase() + "] " + moduleName
+  }
+}
+
+var sequelize = Support.createSequelizeInstance({ dialect: Support.getTestDialect() })
+
+before(function(done) {
+  this.sequelize = sequelize
+  done()
+})
+
+afterEach(function(done) {
+  Support.clearDatabase(this.sequelize, done)
+})
+
+module.exports = Support