Commenting out a validation to ensure a failing test in Java

Generator Data Matrix ECC200 in Java Commenting out a validation to ensure a failing test
Listing 68 Commenting out a validation to ensure a failing test
ECC200 Drawer In Java
Using Barcode drawer for Java Control to generate, create ECC200 image in Java applications.
app/models/userrb
Bar Code Generator In Java
Using Barcode printer for Java Control to generate, create bar code image in Java applications.
class User < ActiveRecord::Base attr_accessible :name, :email # validates :name, :presence => true end
Scanning Barcode In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
As in the case of controller generation (eg, Listing 523), the model generate command in Listing 61 produces an initial spec for testing users, but in this case it s practically blank (Listing 69)
Create DataMatrix In Visual C#
Using Barcode creator for Visual Studio .NET Control to generate, create Data Matrix image in .NET framework applications.
Listing 69 The practically blank default User spec
ECC200 Drawer In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create Data Matrix image in ASP.NET applications.
spec/models/user_specrb
Create Data Matrix 2d Barcode In VS .NET
Using Barcode generation for Visual Studio .NET Control to generate, create DataMatrix image in VS .NET applications.
require 'spec_helper' describe User do pending "add some examples to (or delete) #{__FILE__}" end
Painting Data Matrix In Visual Basic .NET
Using Barcode generator for .NET Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
This simply uses the pending method to indicate that we should fill the spec with something useful We can see its effect by running the User model spec:
UPC-A Creator In Java
Using Barcode creation for Java Control to generate, create UPCA image in Java applications.
User Validations
Painting Code 128 Code Set C In Java
Using Barcode generator for Java Control to generate, create Code 128B image in Java applications.
$ rspec spec/models/user_specrb *
Encode Bar Code In Java
Using Barcode creation for Java Control to generate, create barcode image in Java applications.
Finished in 001999 seconds 1 example, 0 failures, 1 pending Pending: User add some examples to (or delete) /Users/mhartl/rails_projects/sample_app/spec/models/user_specrb (Not Yet Implemented)
Bar Code Drawer In Java
Using Barcode generator for Java Control to generate, create barcode image in Java applications.
We ll follow the advice of the default spec by filling it in with some RSpec examples, shown in Listing 610
Bar Code Encoder In Java
Using Barcode encoder for Java Control to generate, create bar code image in Java applications.
Listing 610 The initial user spec
Encoding Code 9/3 In Java
Using Barcode creation for Java Control to generate, create USD-3 image in Java applications.
spec/models/user_specrb
Creating Barcode In Visual Basic .NET
Using Barcode creation for VS .NET Control to generate, create barcode image in Visual Studio .NET applications.
require 'spec_helper' describe User do before(:each) do @attr = { :name => "Example User", :email => "user@examplecom" } end it "should create a new instance given valid attributes" do Usercreate!(@attr) end it "should require a name" end
Printing Data Matrix In VB.NET
Using Barcode generator for Visual Studio .NET Control to generate, create ECC200 image in .NET framework applications.
We ve seen require and describe before, most recently in Listing 528 The next line is a before(:each) block; this was covered briefly in an exercise (Listing 333), and all it does is run the code inside the block before each example in this case setting the @attr instance variable to an initialization hash The first example is just a sanity check, verifying that the User model is basically working It uses Usercreate! (read create bang ), which works just like the create method we saw in Section 613 except that it raises an ActiveRecord::RecordInvalid exception if the creation fails (similar to the ActiveRecord::RecordNotFound exception we saw in Section 614) As long as the attributes are valid, it won t raise any exceptions, and the test will pass
EAN13 Scanner In VS .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
6: Modeling and Viewing Users, Part I
Make Barcode In VS .NET
Using Barcode printer for VS .NET Control to generate, create bar code image in .NET framework applications.
The final line is the test for the presence of the name attribute or rather, it would be the actual test, if it had anything in it Instead, the test is just a stub, but a useful stub it is: it s a pending spec, which is a way to write a description of the application s behavior without worrying yet about the implementation Listing 69 shows an example of a pending spec using an explicit call to the pending method; in this case, since we have included only the it part of the example,
Code 39 Extended Reader In .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
it "should require a name"
ANSI/AIM Code 128 Drawer In Visual C#
Using Barcode maker for .NET Control to generate, create Code 128 Code Set B image in VS .NET applications.
RSpec infers the existence of a pending spec Pending specs are handled well by programs for running specs, as seen for Autotest in Figure 65, and the output of rspec spec/ is similarly useful Pending specs are
Paint Data Matrix 2d Barcode In VS .NET
Using Barcode maker for VS .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
Autotest (via autotest) with a pending User spec
User Validations
useful as placeholders for tests we know we need to write at some point but don t want to deal with right now In order to fill in the pending spec, we need a way to make an attributes hash with an invalid name (The @attr hash is valid by construction, with a non-blank name attribute) The Hash method merge does the trick, as we can see with rails console:
>> => >> => @attr = { :name => "Example User", :email => "user@examplecom" } {:name => "Example User", :email => "user@examplecom"} @attrmerge(:name => "") {:name => "", :email => "user@examplecom"}
With merge in hand, we re ready to make the new spec (using a trick I ll explain momentarily), as seen in Listing 611
Listing 611 A failing test for validation of the name attribute
spec/models/user_specrb
describe User do before(:each) do @attr = { :name => "Example User", :email => "user@examplecom" } end it "should require a name" do no_name_user = Usernew(@attrmerge(:name => "")) no_name_usershould_not be_valid end end
Here we use merge to make a new user called no_name_user with a blank name The second line then uses the RSpec should_not method to verify that the resulting user is not valid The trick I alluded to above is related to be_valid: we know from earlier in this section that a User object responds to the valid boolean method RSpec adopts the useful convention of allowing us to test any boolean method by dropping the question mark and prepending be_ In other words,