CSC/ECE 517 Spring 2014/final doc updated qyx: Difference between revisions

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== Introduction ==
== Introduction ==
This project will be an extension of our [http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Spring_2014/oss_E1406_st previous E1406 project]. For the previous project, we did some refactoring and testing for the controllers related to teams. This time, we are going to reuse most of our test environment, but extend the tests to other team-related classes. We also expect to examine and report the code that may require refactoring.
This project will be an extension of our [http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Spring_2014/oss_E1406_st previous E1406 project]. For the previous project, we did some refactoring and testing for the controllers related to teams. This time, we are going to reuse most of our test environment, but extend the tests to other team-related classes. We also expect to examine and report the code that may require refactoring.
== Test Environment ==
== Test Environment ==


Line 9: Line 10:
;Sample data : Fixtures (under /test/fixtures)
;Sample data : Fixtures (under /test/fixtures)
;Coverage tool: [https://rubygems.org/gems/simplecov SimpleCov]
;Coverage tool: [https://rubygems.org/gems/simplecov SimpleCov]
=== Statistics ===
''Please note that the coverage generate by SimpleCov may be lower than expect due to the added fixtures.''
; Overall (set of 6 tests) : 105 tests, 156 assertions, 2 failures, 3060 / 13457 LOC (22.74%) covered.
; Unit tests : 18 tests, 18 assertions, 0 failures
; Functional tests : 87 tests, 138 assertions, 2 failures (reasons of failures can be found in "Possible Bugs")
== Running Tests ==
Please note that all of our work will be under the /test folder, which means they will not show any change on the view.
Run
rake test:prepare
before each action.
To run unit tests
bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/unit/team_test.rb test/unit/course_team_test.rb test/unit/assignment_team_test.rb test/unit/team_user_test.rb
To run functional tests
bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/functional/advertise_for_partner_controller_test.rb test/functional/teams_users_controller_test.rb
You can also run multiple tests
  bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/functional/teams_users_controller_test.rb test/functional/advertise_for_partner_controller_test.rb test/unit/course_team_test.rb test/unit/assignment_team_test.rb test/unit/team_test.rb test/unit/team_user_test.rb
running the whole test suite with <code>rake test</code> is not recommended, as the schema change overtime has broke some of the previous tests.


== Background ==
== Background ==
Line 24: Line 46:
* Both assignment_team class and course_team class are inherited from team class.
* Both assignment_team class and course_team class are inherited from team class.
* These two classes have similar methods, which could be used to manage teams for assignment and course more effectively.
* These two classes have similar methods, which could be used to manage teams for assignment and course more effectively.
== Changes made to original classes ==
== Summary of Found Issues ==
=== team.rb ===  
=== Changes made to the class===
* line 10 def get_participants removed
==== team.rb ====
** This is commented out because the same method is defined again at line 26
''Based on the discussion from the demo, the duplicated method was deleted instead of commented out''
* line 38 def self.generate_team_name() removed
* duplicated def get_participants was removed
** This is commented out because the same method is defined again at line 150
** This is removed because the same method is defined again at line 20
* line 100 def self.create_node_object(name, parent_id)
* duplicated def self.generate_team_name() was removed
** see the TODO at line 99, the method will not work.
** This is removed because the same method is defined again at line 131
==== advertise_for_team_controller.rb ====
* def new was removed
** since it's empty, there is no need to keep the code there


== Test Classes ==
=== Possible Refactoring ===
=== app/models/teams_users.rb===
==== team.rb ====
The teams_users.rb is a model belonging to both users and teams. It is used when a user is added to a team.
* line 81 def self.create_node_object(name, parent_id)
** see the TODO at line 80, the method will not work.
=== advertise_for_team_controller.rb ===
* ''update'' should be ''edit'' (this is mentioned in the comments of code)
* ''edit'' should be reexamined since it is only assigning the team object
=== assignment_team.rb ===
* in "delete" method, before sign_up.each.destory, we need to make sure sign_up is not nil.
* in "email" method, a method named get_team_users is called but this method has no definition. We should define get_team_users somewhere or delete "email" method.
=== course_team.rb ===
* add_participant(course_id, user)method should belong to course rather than course_team. Delete this method.
* self.export_all_assignment_team_related_to_course(csv, parent_id, options)method should be deleted.


=== app/controllers/teams_users_controller.rb===
=== teams_user.rb ===
The teams_users_controller support team member management for instructor/TA accounts
* ''delete'' method should not call ''team.delete'', comment out corresponding statements.
Instruction/TA can:
* ''self.is_team_empty'' method should not call ''length'', replace corresponding statements with ''count'' method
* get a user name by inputting part of the name
* list team members of a team  
* add a user to a team
* remove a team member from a team
* remove all members belonging to an item


=== app/controllers/advertise_for_partners_controller.rb ===
=== teams_users_controller.rb ===
The advertise_for_partners_controller work with the student_team_controllers, allowing student manage advertisement for their teams.
* ''delete_selected'' method mistake using ''find'' and ''first'', this method could not work. No test will be made on the method
 
A student can:
* create a new advertisement for the team
* edit the advertisement content
* remove advertisement record from the table for the specific team
 
=== app/unit/assignment_team.rb ===
* includes?(participant): check if this assignment team include this participant
* assign_reviewer(reviewer): assign a reviewer for this assignment team
* reviewed_by?(reviewer):check if this assignment team is reviewed by this reviewer
* topic: get the topic picked up by this team
* has_submissions?: check if this team submitted work or not
* reviewed_contributor?(contributor)
* participants: get all the participants
* delete: delete the signed up users
* self.get_first_member(team_id): get the first participant
* get_hyperlinks
* get_path
* get_submitted_files
* get_review_map_type: return TeamReviewResponseMap
* self.handle_duplicate(team, name, assignment_id, handle_duplicates): handle duplicate team in different cases
* self.import(row,session,assignment_id,options): import team members to a exist team or a new team
* email: get fist team user's email
* get_participant_type: return AssignmentParticipant
* get_parent_model:return Assignment
* fullname
* get_participants
* copy(course_id): copy a team from course team
* add_participant(assignment_id, user): add participant to AssignmentParticipant
* assignment
* get_scores(questions): return a hash of scores that the team has received for the questions
* self.get_team(participant): get this participant's team
* self.export(csv, parent_id, options): export assignment and team members
* self.get_export_fields(options)
* self.create_team_and_node(assignment_id)
* self.remove_team_by_id(id): Remove a team given the team id


=== app/unit/course_team.rb ===
=== Possible Bugs ===
* get_participant_type: return CourseParticipant
==== team.rb ====
* get_parent_model:return Course
* def add_member(user, assignment_id) allow nil to be passed
* get_node_type: return TeamNode
** rails always raise runtime error when nil is passed. [[#unit/team_test.rb|Test: "add member for course should create teams user" ]]
* assignment_id: return nil
* def randomize_all_by_parent passing wrong arguments
* copy(assignment_id): copy a team from assignment team
** The code is passing wrong arguments in line 124 for add_member, there should be 2 arguments. [[#unit/team_test.rb|Test: "randomize_all_by_parent" ]]
* add_participant(course_id, user): add a user to a course. Note: this is deprecated because the functionality belongs to course
* def import_team_members passing wrong arguments
* export_participants: export the participants of a course team
** it is calling add_member and passing nil for assignment_id, which will make rails raise error.[[#unit/team_test.rb|Test: "import team members successfully" ]]
* export(team_name_only): export team name, participants and course
==== assignment_team.rb ====
* self.handle_duplicate(team, name, assignment_id, handle_duplicates): handle duplicate team in different cases
* def self.get_export_fields(options)
* self.import(row,session,assignment_id,options): import team members to a exist team or a new team
** when the option team_name => false, the second element of the output array should be "Team members". But from the test, it is "Assignment Name". This is one failure from assignment_team_test.rb
* self.export(csv, parent_id, options): export course and team members
* def add_participant(assignment_id, user)
* self.get_export_fields(options)
** the AssignmentParticipant.count does not increase. This is another failure from assignment_team_test.rb.
* self.export_all_assignment_team_related_to_course(csv, parent_id, options): this method is deprecated
==== teams_user.rb ====
* self.create_team_and_node(assignment_id)
* def delete(option)
** should not call ''team.delete'', it will cause recursion error
* def self.is_team_empty(team_id)
** rewrite this method without using ''length'' method, the ''length'' method will generate errors here
==== teams_users_controller.rb ====
* def delete_selected(options)
** the statement ''TeamsUser.find(item_id).first'' cannot work, since the method ''find'' will return an exact object, which cannot be applied ''first'' method


== Setup ==
== Setup ==
Line 125: Line 125:
[[File:Usecase_E1414_advertise.jpg]]
[[File:Usecase_E1414_advertise.jpg]]


== Testing Scenarios ==
== Concerns for Test Cases ==


=== functional/teams_users_controller_test.rb ===
=== functional/teams_users_controller_test.rb ===
[[File:TeamUsersStory.png]]
[[File:TeamUsersStory.png]]


Based on the user story of the teams_users_controller.rb, there are also several sub-scenarios for each method in the user story.
=== functional/teams_users_controller_test.rb ===
 
Because most of the tests are straightforward, only tests with concerns are listed.
* Auto_complete_for_user_name:
** Test auto_complete_for_user_name with valid user name
** Test auto_complete_for_user_name with invalid user name
 
* List
** Test List with valid team id
** Test List with invalid team id
 
* New
** Test New with valid team id
** Test New with invalid team id
 
* Create
** Test Create with valid team id
*** Test Create with valid user id and maximum member number is not reached
*** Test Create with invalid user id and maximum member number is not reached
*** Test Create with valid user id and maximum member number is reached
*** Test Create with invalid user id and maximum member number is reached
** Test Create with invalid team id
*** Test Create with valid user id and maximum member number is not reached
*** Test Create with invalid user id and maximum member number is not reached
*** Test Create with valid user id and maximum member number is reached
*** Test Create with invalid user id and maximum member number is reached
 
* Delete
** Test Delete with valid user id
** Test Delete with invalid user id
 
* Delete_select
* Delete_select
** Test Delete_select with valid item id
** Please notice that this method will receive an ''item_id'' and delete the first team user belonging to that item
** Test Delete_select with invalid item id


=== unit/teams_users_test.rb ===
=== unit/teams_users_test.rb ===
 
Only tests with concerns are listed.
* Delete
* Delete
** Test Delete to check if it could delete the team node and the team user
** Notice here we would not test if the method will delete team, only test if it could delete the team user
 
* Remove_team
** Test Remove_team with valid user_id and valid team_id
** Test Remove_team with valid user_id and invalid team_id
** Test Remove_team with invalid user_id and valid team_id
** Test Remove_team with invalid user_id and invalid team_id
 
* Is_team_empty
** Test Is_team_empty with empty team
** Test Is_team_empty with non-empty team
 
* Add_member_to_invited_team
** Test Add_member_to_invited_team with valid user_id and valid team_id
** Test Add_member_to_invited_team with valid user_id and invalid team_id
** Test Add_member_to_invited_team with invalid user_id and valid team_id
** Test Add_member_to_invited_team with invalid user_id and invalid team_id


=== functional/advertise_for_partner_controller_test.rb ===
=== functional/advertise_for_partner_controller_test.rb ===
* test "test remove advertisement should set advertise_for_partner false" do
* test "test remove advertisement should remove advertisement comments" do
* test "test remove advertisement should redirect to view" do
* test "test create advertisement should set advertise_for_partner true" do
*  test "test create advertisement should set comment for advertisement" do
*  test "test create advertisement should redirect to view" do
*  test "test update advertisement successfully should show notice" do
*  test "test update advertisement successfully should change comment" do
*  test "test update advertisement successfully should redirect to view" do
*  # test "test update advertisement fail" do
*  # test "test update advertisement fail" do
** should show flash for fail message when team.save fail, but there is no really a good way to fail team.save, so this is not implemented
** should show flash for fail message when team.save fail, but there is no really a good way to fail team.save, so this is not implemented
*  test "test edit advertisement" do
** only assign team


=== unit/team_test.rb ===
=== unit/team_test.rb ===
Line 209: Line 153:


*  test "add member for course should create teams user" do
*  test "add member for course should create teams user" do
** In the original code, it allow nil to be passed as parameter, and checks for assignment.id = nil, but rails will actually raise runtime error when nil is passed.
** In the original code, it allow nil to be passed as parameter, and checks for assignment_id = nil, but rails will actually raise runtime error when nil is passed.


*  #test "randomize_all_by_parent" do
*  #test "randomize_all_by_parent" do
Line 215: Line 159:


*  #test "import team members successfully" do
*  #test "import team members successfully" do
** problem: add_member are not passing correct assignment id at line 169 in team.rb
** problem: add_member are not passing correct assignment id in team.rb


=== unit/assignment_team_test.rb ===
=== unit/assignment_team_test.rb ===
* includes?(participant)
Because most of the tests are straightforward, only tests with concerns are listed.
** test one assignment team include a participant return true
* assign_reviewer(reviewer)
** assign a reviewer for this assignment team, and TeamReviewResponseMap.count increases
* reviewed_by?(reviewer)
** TeamReviewResponseMap is empty, so test this method will return false
* has_submissions?
** test one team has a submission return true
* reviewed_contributor?(contributor)
** TeamReviewResponseMap is empty, so test this method will return false
* participants
** participants are not nil
* delete
* delete
** this method has bug. No test
** this method has bug. In the method, before sign_up.each.destory, we need to make sure sign_up is not nil. No test
* self.get_first_member(team_id)
** test first menber not nil
* get_hyperlinks
** test hyperlinks are not nil
* get_path
** test path is not nil
* get_submitted_files
** submitted_file must be empty, expect nil
* get_review_map_type
** return TeamReviewResponseMap
* self.handle_duplicate(team, name, assignment_id, handle_duplicates)
** test in different cases(team is nil, option is "ignore", option is "rename")
* self.import(row,session,assignment_id,options)
** test in different cases(argument error, has_column_name is true, has_column_name is false)
* email
* email
** this method has bug because there is no method named get_team_users. No test
** this method has bug because there is no method named get_team_users. No test
* get_participant_type
** return AssignmentParticipant
* get_parent_model
** return Assignment
* fullname
** return value should equal what we expect
* get_participants
** test the participants are not nil
* copy(course_id)
** TeamUserNode.count and TeamsUser.count increase
* add_participant(assignment_id, user)
** AssignmentParticipant.count increases
* assignment
** return value should equal what we expect
* get_scores(questions)
** return output's total score is not nil and the assignment team is what we expect
* self.get_team(participant)
** return team is what we expect
* self.export(csv, parent_id, options)
** test in different cases(team_name is true, team_name is false)
* self.get_export_fields(options)
** test if the fields' name is right
* self.create_team_and_node(assignment_id)
** assignent team and team node are not nil
* self.remove_team_by_id(id)
** check the removed team cannot be found in AssignmentTeam


=== unit/course_team_test.rb ===
=== unit/course_team_test.rb ===
Because most of the methods in course_team.rb are similar with that in assignment_team.rb if they have the same name. So I skip the same name method. Take the test/unit/course_team_test.rb as a reference.
Only tests with concerns are listed.
*add_participant(course_id, user)
** this method should belong to course rather than course_team. This test may be not useful.
* self.export_all_assignment_team_related_to_course(csv, parent_id, options)
* self.export_all_assignment_team_related_to_course(csv, parent_id, options)
** this method should be deleted here. No test
** this method should be deleted from course_team class. No test


== Possible Refactoring ==
== Possible Refactoring ==
=== advertise_for_team_controller.rb ===
* ''update'' should be ''edit'' (this is mentioned in the comments of code)
* ''edit'' should be reexamined since it is only retrieving the team object
* ''new'' is empty, so it should be removed
=== team.rb ===
* There are two ''def get_participants'', the second one overwritten the first one, so the first one should be deleted.
=== teams_participant.rb & teams_participants_controller.rb ===
=== teams_participant.rb & teams_participants_controller.rb ===
* These two files are never used, no tests will cover them.
* These two files are never used, no tests will cover them.
=== teams_user.rb ===
* In ''delete'' method, the statements about ''team.delete'' should be commented out due to the recursion it causes.
* ''elf.is_team_empty'' method is rewritten since the original code will cause fatal error.
=== teams_users_controller.rb ===
* ''delete_select'' method will not work since the params are not in accordance with the method called inside.
== Running Tests ==
Please note that all of our work will be under the /test folder, which means they will not show any change on the view.
To see the result of tests, run
rake test TEST=test/unit/<filename> # for models
and
rake test TEST=test/functional/<filename> # for controllers
You can also run multiple tests
  rake test:prepare
  bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/functional/teams_users_controller_test.rb test/functional/advertise_for_partner_controller_test.rb test/unit/course_team_test.rb test/unit/assignment_team_test.rb test/unit/team_test.rb test/unit/team_user_test.rb
running the whole test suite with <code>rake test</code> is not recommended, as the schema change overtime has broke some of the previous tests.


==Sample Test Code==
==Sample Test Code==

Latest revision as of 17:25, 29 April 2014

E1414: Testing classes related to teams

Please be advised that we do not have deployment link, since our work are all back-end tests

Introduction

This project will be an extension of our previous E1406 project. For the previous project, we did some refactoring and testing for the controllers related to teams. This time, we are going to reuse most of our test environment, but extend the tests to other team-related classes. We also expect to examine and report the code that may require refactoring.

Test Environment

Framework
Rails default test framework
Sample data
Fixtures (under /test/fixtures)
Coverage tool
SimpleCov

Statistics

Please note that the coverage generate by SimpleCov may be lower than expect due to the added fixtures.

Overall (set of 6 tests)
105 tests, 156 assertions, 2 failures, 3060 / 13457 LOC (22.74%) covered.
Unit tests
18 tests, 18 assertions, 0 failures
Functional tests
87 tests, 138 assertions, 2 failures (reasons of failures can be found in "Possible Bugs")

Running Tests

Please note that all of our work will be under the /test folder, which means they will not show any change on the view. Run

rake test:prepare

before each action. To run unit tests

bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/unit/team_test.rb test/unit/course_team_test.rb test/unit/assignment_team_test.rb test/unit/team_user_test.rb

To run functional tests

bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/functional/advertise_for_partner_controller_test.rb test/functional/teams_users_controller_test.rb

You can also run multiple tests

 bundle exec ruby -I.:test -e "ARGV.each{|f| require f}" test/functional/teams_users_controller_test.rb test/functional/advertise_for_partner_controller_test.rb test/unit/course_team_test.rb test/unit/assignment_team_test.rb test/unit/team_test.rb test/unit/team_user_test.rb

running the whole test suite with rake test is not recommended, as the schema change overtime has broke some of the previous tests.

Background

teams_users.rb & teams_users_controller.rb

  • Teams_users.rb and teams_users_controller.rb are used for Instructor/TA to manage the members of teams.
  • There is no functional test for teams_users_controller.rb and unit test for teams_users.rb in the current version of expertiza codes.

  • This controller takes over the advertisement function from the student_team_controller, and make the class more RESTful.
  • It seems like there has been a functional test, but the class name and set up looks like the other class. It may be necessary to re-run, and even re-write the test

team.rb

  • This model defines the relationship between team object and other objects. It also has other methods to handle related functions about team operation
  • There exists a unit test for team model, but there are only two test cases. Also, some of the methods under team.rb are duplicated, or either marked as not working. Further research may be required before starting to do the test.

assignment_team.rb & course_team.rb

  • Both assignment_team class and course_team class are inherited from team class.
  • These two classes have similar methods, which could be used to manage teams for assignment and course more effectively.

Summary of Found Issues

Changes made to the class

team.rb

Based on the discussion from the demo, the duplicated method was deleted instead of commented out

  • duplicated def get_participants was removed
    • This is removed because the same method is defined again at line 20
  • duplicated def self.generate_team_name() was removed
    • This is removed because the same method is defined again at line 131

  • def new was removed
    • since it's empty, there is no need to keep the code there

Possible Refactoring

team.rb

  • line 81 def self.create_node_object(name, parent_id)
    • see the TODO at line 80, the method will not work.

  • update should be edit (this is mentioned in the comments of code)
  • edit should be reexamined since it is only assigning the team object

assignment_team.rb

  • in "delete" method, before sign_up.each.destory, we need to make sure sign_up is not nil.
  • in "email" method, a method named get_team_users is called but this method has no definition. We should define get_team_users somewhere or delete "email" method.

course_team.rb

  • add_participant(course_id, user)method should belong to course rather than course_team. Delete this method.
  • self.export_all_assignment_team_related_to_course(csv, parent_id, options)method should be deleted.

teams_user.rb

  • delete method should not call team.delete, comment out corresponding statements.
  • self.is_team_empty method should not call length, replace corresponding statements with count method

teams_users_controller.rb

  • delete_selected method mistake using find and first, this method could not work. No test will be made on the method

Possible Bugs

team.rb

assignment_team.rb

  • def self.get_export_fields(options)
    • when the option team_name => false, the second element of the output array should be "Team members". But from the test, it is "Assignment Name". This is one failure from assignment_team_test.rb
  • def add_participant(assignment_id, user)
    • the AssignmentParticipant.count does not increase. This is another failure from assignment_team_test.rb.

teams_user.rb

  • def delete(option)
    • should not call team.delete, it will cause recursion error
  • def self.is_team_empty(team_id)
    • rewrite this method without using length method, the length method will generate errors here

teams_users_controller.rb

  • def delete_selected(options)
    • the statement TeamsUser.find(item_id).first cannot work, since the method find will return an exact object, which cannot be applied first method

Setup

To set up our testing for the models and controllers, we need some fixtures to support. Fixtures needed for corresponding classes are listed below However, all of the fixtures are required to be in the fixutre folder, otherwise it will raise error.

fixtures use in common

  • teams.yml
  • users.yml
  • teams_users.yml
  • courses.yml
  • assignments.yml
  • teams_participant.yml
  • join_team_requests.yml
  • participants.yml
  • nodes.yml
  • questions.yml
  • signed_up_users.yml

Use Case Diagram

Concerns for Test Cases

functional/teams_users_controller_test.rb

functional/teams_users_controller_test.rb

Because most of the tests are straightforward, only tests with concerns are listed.

  • Delete_select
    • Please notice that this method will receive an item_id and delete the first team user belonging to that item

unit/teams_users_test.rb

Only tests with concerns are listed.

  • Delete
    • Notice here we would not test if the method will delete team, only test if it could delete the team user

functional/advertise_for_partner_controller_test.rb

  • # test "test update advertisement fail" do
    • should show flash for fail message when team.save fail, but there is no really a good way to fail team.save, so this is not implemented

unit/team_test.rb

Most of test should be straightforward, so only the test with concerns will be listed below

  • test "get_participants from assignment team" do
    • Please notice that this will actually call the get_participants under AssignmentTeam
  • test "generate_team_name" do
    • Please notice that this method (self.generate_team_name)is modified
  • test "add member for course should create teams user" do
    • In the original code, it allow nil to be passed as parameter, and checks for assignment_id = nil, but rails will actually raise runtime error when nil is passed.
  • #test "randomize_all_by_parent" do
    • Commented out because the bug in the code make it raise error because assignment id not passed. (wrong argument)
  • #test "import team members successfully" do
    • problem: add_member are not passing correct assignment id in team.rb

unit/assignment_team_test.rb

Because most of the tests are straightforward, only tests with concerns are listed.

  • delete
    • this method has bug. In the method, before sign_up.each.destory, we need to make sure sign_up is not nil. No test
  • email
    • this method has bug because there is no method named get_team_users. No test

unit/course_team_test.rb

Only tests with concerns are listed.

  • add_participant(course_id, user)
    • this method should belong to course rather than course_team. This test may be not useful.
  • self.export_all_assignment_team_related_to_course(csv, parent_id, options)
    • this method should be deleted from course_team class. No test

Possible Refactoring

teams_participant.rb & teams_participants_controller.rb

  • These two files are never used, no tests will cover them.

Sample Test Code

We show two pieces of test code for two controllers from our previous work to explain how our test works

   test "create_student team with name in use" do
       sessionVars = session_for(users(:student8))
       post(:create, {'team' => { 'name' => 'IntelligentTeam2'}, 'id' => participants(:par21).id, "commit" => "Create Team"}, sessionVars, nil)
       assert_equal 'Team name is already in use.', flash[:notice]
       assert_redirected_to :controller => 'student_team', :action => 'view', :id => participants(:par21).id
   end
   test "create_should_increase_number_of_teams_course" do
       sessionVars = session_for(users(:instructor1))
       sessionVars[:team_type] = "Course"
       assert_difference 'Team.count' do
         get :create, {'id' => @testCourse,'team' => {'name' => "Random"}},sessionVars
       end
   end

The first piece of code is from student_team_controller.rb. It tests if there is already a same team name when student8 want to create a team. The second piece of code is from teams_controller_test.rb. It tests if the team number decreases when instructor1 creates a new team for a course.

As we can see from the code, when we want to use post or get, several parameters are needed. Usually we use four parameters: First, the method we are requesting. Second, an hash of request parameters for the method. Third, an optional hash of session variables. Forth, an optional hash of flash values. If we do not want to pass in the optional hash, we can set it to nil as the first piece of code shows, or we can just leave it blank as the second piece of code shows.

When we run the command rake test TEST=test/functional/your_test_file.rb, you will see if the test is passed or not.

References

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