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Suite is a package meant to make testinggobuffalo.io applications easier.

This is the entry point into your unit testing suite. TheTest_ActionSuite(t *testing.T) function iscompatible with thego test command, and it should:

• Create and configure your new test suite instance (ActionSuite in this case)
• Callsuite.Run with the*testing.T passed by the Go testing system, and your newActionSuite instance

package actions_testimport ("testing""github.com/gobuffalo/suite/v4""github.com/gobuffalo/toodo/actions")typeActionSuitestruct {*suite.Action}funcTest_ActionSuite(t*testing.T) {as:=&ActionSuite{suite.NewAction(actions.App())}suite.Run(t,as)}

This is where you write your actual test logic. The rules for test names are similar, but not the same, as withgo test:

• Each test is a method on your*ActionSuite
• Test method names should start withTest (note the upper caseT)
• Test methods should have no arguments

A few additional notes:

• To avoid race conditions on the testing database, always use theActionSuite variable calledDB to access the database (not your production app's database)
• You can access the raw*testing.T value if needed withas.T()
• ActionSuite has support fortestify'srequire package andassert package
• ... So try to use one of those instead packages of using the raw methods on the*testing.T
• The default database thatsuite will connect to is calledtesting in yourdatabase.yml

package actions_testimport ("fmt""github.com/gobuffalo/toodo/models")func (as*ActionSuite)Test_TodosResource_List() {todos:= models.Todos{        {Title:"buy milk"},        {Title:"read a good book"},    }for_,t:=rangetodos {err:=as.DB.Create(&t)as.NoError(err)    }res:=as.HTML("/todos").Get()body:=res.Body.String()for_,t:=rangetodos {as.Contains(body,fmt.Sprintf("<h2>%s</h2>",t.Title))    }}func (as*ActionSuite)Test_TodosResource_New() {res:=as.HTML("/todos/new").Get()as.Contains(res.Body.String(),"<h1>New Todo</h1>")}func (as*ActionSuite)Test_TodosResource_Create() {todo:=&models.Todo{Title:"Learn Go"}res:=as.HTML("/todos").Post(todo)as.Equal(301,res.Code)as.Equal("/todos",res.Location())err:=as.DB.First(todo)as.NoError(err)as.NotZero(todo.ID)as.NotZero(todo.CreatedAt)as.Equal("Learn Go",todo.Title)}func (as*ActionSuite)Test_TodosResource_Create_Errors() {todo:=&models.Todo{}res:=as.HTML("/todos").Post(todo)as.Equal(422,res.Code)as.Contains(res.Body.String(),"Title can not be blank.")c,err:=as.DB.Count(todo)as.NoError(err)as.Equal(0,c)}func (as*ActionSuite)Test_TodosResource_Update() {todo:=&models.Todo{Title:"Lern Go"}verrs,err:=as.DB.ValidateAndCreate(todo)as.NoError(err)as.False(verrs.HasAny())res:=as.HTML("/todos/%s",todo.ID).Put(&models.Todo{ID:todo.ID,Title:"Learn Go"})as.Equal(200,res.Code)err=as.DB.Reload(todo)as.NoError(err)as.Equal("Learn Go",todo.Title)}

Often it is useful to load a series of data into the database at the start of the test to make testing easier. For example, you need to have a user in the database to log a person into the application, or you need some data in the database to test destroying that data. Fixtures let us solve these problems easily.

First you need to setup your test suite to use fixtures. You can do this by usingsuite.NewActionWithFixtures orsuite.NewModelWithFixtures methods to create new test suites that take anfs.FS pointing to where the files for this suite live.

package actionsimport ("os""testing""github.com/gobuffalo/suite/v4")typeActionSuitestruct {*suite.Action}funcTest_ActionSuite(t*testing.T) {action,err:=suite.NewActionWithFixtures(App(),os.DirFS("../fixtures"))iferr!=nil {t.Fatal(err)    }as:=&ActionSuite{Action:action,    }suite.Run(t,as)}

Once your suite is set up, you can createN numbers of*.toml files in the directory you've chosen for your fixtures, in this example,../fixtures.

[[scenario]]name ="lots of widgets"  [[scenario.table]]name ="widgets"    [[scenario.table.row]]id ="<%= uuidNamed("widget") %>"name ="This is widget #1"body ="some widget body"created_at ="<%= now() %>"updated_at ="<%= now() %>"    [[scenario.table.row]]id ="<%= uuid() %>"name ="This is widget #2"body ="some widget body"created_at ="<%= now() %>"updated_at ="<%= now() %>"  [[scenario.table]]name ="users"    [[scenario.table.row]]id ="<%= uuid() %>"name ="Mark Bates"admin =trueprice =19.99widget_id ="<%= uuidNamed("widget") %>"created_at ="<%= now() %>"updated_at ="<%= now() %>"

The*.toml files all get run throughhttps://github.com/gobuffalo/plush before they're decoded, so you can make use of the helpful helper methods that ship with Plush.

We've also add a couple of useful helpers for you as well:

• uuid() - returns a newgithub.com/gobuffalo/uuid.UUID
• now() - returnstime.Now()
• nowAdd(s) andnowSub(s) - similar tonow() buts amount of seconds is added or substracted, respectively, from the return value
• uuidNamed(name) - will attempt to return a previously declared UUID with that name, useful, for relations/associations. If there was one that wasn't defined with that name, a new one will be created.
• hash(string, opts) - will create the hashed value of the string (useful for creating a password), you can define the cost as an opts (the default isbcrypt.DefaultCost)

In your suite tests you need to call theLoadFixture method giving it the name of the fixtures you would like to use for this test.

func (as*ActionSuite)Test_WidgetsResource_List() {as.LoadFixture("lots of widgets")res:=as.HTML("/widgets").Get()body:=res.Body.String()as.Contains(body,"widget #1")as.Contains(body,"widget #2")}

• Can I callLoadFixture more than once in a test? - Absolutely! Call it as many times as you want!
• Can I load multiple rows into a table in one scenario? - Absolutely!
• Can I load data into multiple tables in one scenario? - Absolutely!
• Will it load all my fixtures? - No, you have to load specific scenarios, so don't be afraid to create lots of scenarios and only call the ones you need per test.
• Will this pollute my database, and how do I clear data between tests? - No need to worry, the suite will truncate any data in your database between test runs, so you never have to worry about it.