test that migrations are correctly undone

test/sequelize.executable.test.js

@@ -209,20 +209,30 @@ describe(Support.getTestDialectTeaser("Executable"), function() {
 
   ;(function(flags) {
     flags.forEach(function(flag) {
-      var prepare = function(callback) {
+      var execBinary = function(callback, _flag) {
+        _flag = _flag || flag
+
+        var dialect = Support.getTestDialect()
+          , config  = require(__dirname + '/config/config.js')
+
+        config.sqlite.storage = __dirname + "/tmp/test.sqlite"
+        config = _.extend(config, config[dialect], { dialect: dialect })
+
+        exec("echo '" + JSON.stringify(config) + "' > config/config.json", { cwd: __dirname + '/tmp' }, function(error, stdout) {
+          exec("../../bin/sequelize " + _flag, { cwd: __dirname + "/tmp" }, callback)
+        })
+      }
+
+      var prepare = function(callback, options) {
+        options = options || {}
+
         exec("rm -rf ./*", { cwd: __dirname + '/tmp' }, function(error, stdout) {
           exec("../../bin/sequelize --init", { cwd: __dirname + '/tmp' }, function(error, stdout) {
             exec("cp ../assets/migrations/*-createPerson.js ./migrations/", { cwd: __dirname + '/tmp' }, function(error, stdout) {
               exec("cat ../support.js|sed s,/../,/../../, > ./support.js", { cwd: __dirname + '/tmp' }, function(error, stdout) {
-                var dialect = Support.getTestDialect()
-                  , config  = require(__dirname + '/config/config.js')
-
-                config.sqlite.storage = __dirname + "/tmp/test.sqlite"
-                config = _.extend(config, config[dialect], { dialect: dialect })
-
-                exec("echo '" + JSON.stringify(config) + "' > config/config.json", { cwd: __dirname + '/tmp' }, function(error, stdout) {
-                  exec("../../bin/sequelize " + flag, { cwd: __dirname + "/tmp" }, callback)
-                })
+                if (!options.skipExecBinary) {
+                  execBinary(callback, options.flag)
+                }
               })
             })
           })
@@ -265,6 +275,34 @@ describe(Support.getTestDialectTeaser("Executable"), function() {
             done()
           }.bind(this))
         })
+
+        it("is correctly undoing a migration if they have been done yet", function(done) {
+          var sequelize = this.sequelize
+
+          if (this.sequelize.options.dialect === 'sqlite') {
+            var options = this.sequelize.options
+            options.storage = __dirname + "/tmp/test.sqlite"
+            sequelize = new Support.Sequelize("", "", "", options)
+          }
+
+          prepare(function() {
+            sequelize.getQueryInterface().showAllTables().success(function(tables) {
+              tables = tables.sort()
+
+              expect(tables).to.have.length(2)
+              expect(tables[0]).to.equal("Person")
+
+              execBinary(function(err, output) {
+                sequelize.getQueryInterface().showAllTables().success(function(tables) {
+                  expect(tables).to.have.length(1)
+                  expect(tables[0]).to.equal("SequelizeMeta")
+
+                  done()
+                })
+              })
+            })
+          }.bind(this), { flag: '-m' })
+        })
       })
     })
   })(['--migrate --undo', '-mu'])