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rails--rails/actionpack/test/controller/test_case_test.rb
Alex Ghiculescu 054fa96bac ActionController::TestCase: reset instance variables after each request
`ActionController::TestCase` keeps a `@controller` instance variable, which represents the controller being tested. At the end of each request inside a test, its [params and format](https://github.com/rails/rails/blob/main/actionpack/lib/action_controller/metal/testing.rb) are reset. But any other instance variables set in the test aren't reset. This creates a problem if you do something like this:

```ruby
class UserController
  def show
    @user ||= User.find(params[:id])
    render plain: @user.name
  end
end
```

```ruby

test "gets the user" do
  get :show, params: { id: users(:one).id }
  assert "one", response.body

  get :show, params: { id: users(:two).id }
  assert "two", response.body
end
```

The second assertion will fail, because `@user` won't be re-assigned in the second test (due to `||=`). This example is a bit contrived, but it shows how instance variables persisting between requests can lead to surprising outcomes.

This PR fixes this by clearing all instance variables that were created on the controller while a request was processed.

It explicitly excludes instance variables that were created *before* any requests were run. And it leaves the instance variable around until the *next* request in the test. This means that you can still do this:

```ruby

test "gets the user" do
  @controller.user = users(:one) # assuming `Controller#user` users an ivar internally, you can set the ivar here...

  get :show_current
  assert "one", response.body

  assert_equal users(:one), @controller.user # and you can read the ivar here
end
```
2021-12-09 16:22:54 -06:00

1248 lines
35 KiB
Ruby

# frozen_string_literal: true
require "abstract_unit"
require "controller/fake_controllers"
require "active_support/json/decoding"
require "rails/engine"
class TestCaseTest < ActionController::TestCase
def self.fixture_path; end
self.file_fixture_path = File.expand_path("../fixtures/multipart", __dir__)
class TestController < ActionController::Base
def no_op
render plain: "dummy"
end
def set_flash
flash["test"] = ">#{flash["test"]}<"
render plain: "ignore me"
end
def delete_flash
flash.delete("test")
render plain: "ignore me"
end
def set_flash_now
flash.now["test_now"] = ">#{flash["test_now"]}<"
render plain: "ignore me"
end
def set_session
session["string"] = "A wonder"
session[:symbol] = "it works"
render plain: "Success"
end
def reset_the_session
reset_session
render plain: "ignore me"
end
def render_raw_post
raise ActiveSupport::TestCase::Assertion, "#raw_post is blank" if request.raw_post.blank?
render plain: request.raw_post
end
def render_body
render plain: request.body.read
end
def test_params
render plain: ::JSON.dump(params.to_unsafe_h)
end
def test_query_parameters
render plain: ::JSON.dump(request.query_parameters)
end
def test_request_parameters
render plain: request.request_parameters.inspect
end
def test_uri
render plain: request.fullpath
end
def test_format
render plain: request.format
end
def test_query_string
render plain: request.query_string
end
def test_protocol
render plain: request.protocol
end
def test_headers
render plain: ::JSON.dump(request.headers.env)
end
def test_html_output
render plain: <<HTML
<html>
<body>
<a href="/"><img src="/images/button.png" /></a>
<div id="foo">
<ul>
<li class="item">hello</li>
<li class="item">goodbye</li>
</ul>
</div>
<div id="bar">
<form action="/somewhere">
Name: <input type="text" name="person[name]" id="person_name" />
</form>
</div>
</body>
</html>
HTML
end
def test_xml_output
response.content_type = params[:response_as]
render plain: <<XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
<area><p>area is an empty tag in HTML, so it won't contain this content</p></area>
</root>
XML
end
def test_only_one_param
render plain: (params[:left] && params[:right]) ? "EEP, Both here!" : "OK"
end
def test_remote_addr
render plain: (request.remote_addr || "not specified")
end
def test_file_upload
render plain: params[:file].size
end
def test_send_file
send_file(__FILE__)
end
def redirect_to_same_controller
redirect_to controller: "test", action: "test_uri", id: 5
end
def redirect_to_different_controller
redirect_to controller: "fail", id: 5
end
def create
head :created, location: "/resource"
end
def render_cookie
render plain: cookies["foo"]
end
def delete_cookie
cookies.delete("foo")
render plain: "ok"
end
def test_without_body
render html: '<div class="foo"></div>'.html_safe
end
def test_with_body
render html: '<body class="foo"></body>'.html_safe
end
def render_json
render json: request.raw_post
end
def boom
raise "boom!"
end
def increment_count
@counter ||= 0
@counter += 1
render plain: @counter
end
private
def generate_url(opts)
url_for(opts.merge(action: "test_uri"))
end
end
def setup
super
@controller = TestController.new
@request.delete_header "PATH_INFO"
@routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
r.draw do
ActiveSupport::Deprecation.silence do
get ":controller(/:action(/:id))"
end
end
end
end
class DefaultUrlOptionsCachingController < ActionController::Base
before_action { @dynamic_opt = "opt" }
def test_url_options_reset
render plain: url_for
end
def default_url_options
if defined?(@dynamic_opt)
super.merge dynamic_opt: @dynamic_opt
else
super
end
end
end
def test_assert_select_without_body
get :test_without_body
assert_select "body", 0
assert_select "div.foo"
end
def test_assert_select_with_body
get :test_with_body
assert_select "body.foo"
end
def test_url_options_reset
@controller = DefaultUrlOptionsCachingController.new
get :test_url_options_reset
assert_nil @request.params["dynamic_opt"]
assert_match(/dynamic_opt=opt/, @response.body)
end
def test_raw_post_handling
params = Hash[:page, { name: "page name" }, "some key", 123]
post :render_raw_post, params: params.dup
assert_equal params.to_query, @response.body
end
def test_params_round_trip
params = { "foo" => { "contents" => [{ "name" => "gorby", "id" => "123" }, { "name" => "puff", "d" => "true" }] } }
post :test_params, params: params.dup
controller_info = { "controller" => "test_case_test/test", "action" => "test_params" }
assert_equal params.merge(controller_info), JSON.parse(@response.body)
end
def test_handle_to_params
klass = Class.new do
def to_param
"bar"
end
end
post :test_params, params: { foo: klass.new }
assert_equal JSON.parse(@response.body)["foo"], "bar"
end
def test_body_stream
params = Hash[:page, { name: "page name" }, "some key", 123]
post :render_body, params: params.dup
assert_equal params.to_query, @response.body
end
def test_document_body_and_params_with_post
post :test_params, params: { id: 1 }
assert_equal({ "id" => "1", "controller" => "test_case_test/test", "action" => "test_params" }, ::JSON.parse(@response.body))
end
def test_document_body_with_post
post :render_body, body: "document body"
assert_equal "document body", @response.body
end
def test_document_body_with_put
put :render_body, body: "document body"
assert_equal "document body", @response.body
end
def test_head
head :test_params
assert_equal 200, @response.status
end
def test_process_without_flash
process :set_flash
assert_equal "><", flash["test"]
end
def test_process_with_flash
process :set_flash,
method: "GET",
flash: { "test" => "value" }
assert_equal ">value<", flash["test"]
end
def test_process_with_flash_now
process :set_flash_now,
method: "GET",
flash: { "test_now" => "value_now" }
assert_equal ">value_now<", flash["test_now"]
end
def test_process_delete_flash
process :set_flash
process :delete_flash
assert_empty flash
assert_empty session
end
def test_process_with_session
process :set_session
assert_equal "A wonder", session["string"], "A value stored in the session should be available by string key"
assert_equal "A wonder", session[:string], "Test session hash should allow indifferent access"
assert_equal "it works", session["symbol"], "Test session hash should allow indifferent access"
assert_equal "it works", session[:symbol], "Test session hash should allow indifferent access"
end
def test_process_with_session_kwarg
process :no_op, method: "GET", session: { "string" => "value1", symbol: "value2" }
assert_equal "value1", session["string"]
assert_equal "value1", session[:string]
assert_equal "value2", session["symbol"]
assert_equal "value2", session[:symbol]
end
def test_process_merges_session_arg
session[:foo] = "bar"
get :no_op, session: { bar: "baz" }
assert_equal "bar", session[:foo]
assert_equal "baz", session[:bar]
end
def test_merged_session_arg_is_retained_across_requests
get :no_op, session: { foo: "bar" }
assert_equal "bar", session[:foo]
get :no_op
assert_equal "bar", session[:foo]
end
def test_process_overwrites_existing_session_arg
session[:foo] = "bar"
get :no_op, session: { foo: "baz" }
assert_equal "baz", session[:foo]
end
def test_session_is_cleared_from_controller_after_reset_session
process :set_session
process :reset_the_session
assert_equal Hash.new, @controller.session.to_hash
end
def test_session_is_cleared_from_request_after_reset_session
process :set_session
process :reset_the_session
assert_equal Hash.new, @request.session.to_hash
end
def test_response_and_request_have_nice_accessors
process :no_op
assert_equal @response, response
assert_equal @request, request
end
def test_process_with_request_uri_with_no_params
process :test_uri
assert_equal "/test_case_test/test/test_uri", @response.body
end
def test_process_with_symbol_method
process :test_uri, method: :get
assert_equal "/test_case_test/test/test_uri", @response.body
end
def test_process_with_request_uri_with_params
process :test_uri,
method: "GET",
params: { id: 7 }
assert_equal "/test_case_test/test/test_uri/7", @response.body
end
def test_process_with_request_uri_with_params_with_explicit_uri
@request.env["PATH_INFO"] = "/explicit/uri"
process :test_uri, method: "GET", params: { id: 7 }
assert_equal "/explicit/uri", @response.body
end
def test_process_with_query_string
process :test_query_string,
method: "GET",
params: { q: "test" }
assert_equal "q=test", @response.body
end
def test_process_with_query_string_with_explicit_uri
@request.env["PATH_INFO"] = "/explicit/uri"
@request.env["QUERY_STRING"] = "q=test?extra=question"
process :test_query_string
assert_equal "q=test?extra=question", @response.body
end
def test_multiple_calls
process :test_only_one_param, method: "GET", params: { left: true }
assert_equal "OK", @response.body
process :test_only_one_param, method: "GET", params: { right: true }
assert_equal "OK", @response.body
end
def test_should_impose_childless_html_tags_in_html
process :test_xml_output, params: { response_as: "text/html" }
# <area> auto-closes, so the <p> becomes a sibling
if defined?(JRUBY_VERSION)
# https://github.com/sparklemotion/nokogiri/issues/1653
# HTML parser "fixes" "broken" markup in slightly different ways
assert_select "root > map > area + p"
else
assert_select "root > area + p"
end
end
def test_should_not_impose_childless_html_tags_in_xml
process :test_xml_output, params: { response_as: "application/xml" }
# <area> is not special, so the <p> is its child
assert_select "root > area > p"
end
def test_assert_generates
assert_generates "controller/action/5", controller: "controller", action: "action", id: "5"
assert_generates "controller/action/7", { id: "7" }, { controller: "controller", action: "action" }
assert_generates "controller/action/5", { controller: "controller", action: "action", id: "5", name: "bob" }, {}, { name: "bob" }
assert_generates "controller/action/7", { id: "7", name: "bob" }, { controller: "controller", action: "action" }, { name: "bob" }
assert_generates "controller/action/7", { id: "7" }, { controller: "controller", action: "action", name: "bob" }, {}
end
def test_assert_routing
assert_routing "content", controller: "content", action: "index"
end
def test_assert_routing_with_method
with_routing do |set|
set.draw { resources(:content) }
assert_routing({ method: "post", path: "content" }, { controller: "content", action: "create" })
end
end
def test_assert_routing_in_module
with_routing do |set|
set.draw do
namespace :admin do
get "user" => "user#index"
end
end
assert_routing "admin/user", controller: "admin/user", action: "index"
end
end
def test_assert_routing_with_glob
with_routing do |set|
set.draw { get("*path" => "pages#show") }
assert_routing("/company/about", controller: "pages", action: "show", path: "company/about")
end
end
def test_params_passing
get :test_params, params: {
page: {
name: "Page name",
month: "4",
year: "2004",
day: "6"
}
}
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{
"controller" => "test_case_test/test", "action" => "test_params",
"page" => { "name" => "Page name", "month" => "4", "year" => "2004", "day" => "6" }
},
parsed_params
)
end
def test_nil_params
get :test_params, params: nil
parsed_params = JSON.parse(@response.body)
assert_equal(
{
"action" => "test_params",
"controller" => "test_case_test/test"
},
parsed_params
)
end
def test_query_param_named_action
get :test_query_parameters, params: { action: "foobar" }
parsed_params = JSON.parse(@response.body)
assert_equal({ "action" => "foobar" }, parsed_params)
end
def test_request_param_named_action
post :test_request_parameters, params: { action: "foobar" }
parsed_params = eval(@response.body)
assert_equal({ "action" => "foobar" }, parsed_params)
end
def test_kwarg_params_passing_with_session_and_flash
get :test_params, params: {
page: {
name: "Page name",
month: "4",
year: "2004",
day: "6"
}
}, session: { "foo" => "bar" }, flash: { notice: "created" }
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{ "controller" => "test_case_test/test", "action" => "test_params",
"page" => { "name" => "Page name", "month" => "4", "year" => "2004", "day" => "6" } },
parsed_params
)
assert_equal "bar", session[:foo]
assert_equal "created", flash[:notice]
end
def test_params_passing_with_integer
get :test_params, params: {
page: { name: "Page name", month: 4, year: 2004, day: 6 }
}
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{ "controller" => "test_case_test/test", "action" => "test_params",
"page" => { "name" => "Page name", "month" => "4", "year" => "2004", "day" => "6" } },
parsed_params
)
end
def test_params_passing_with_integers_when_not_html_request
get :test_params, params: { format: "json", count: 999 }
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{ "controller" => "test_case_test/test", "action" => "test_params",
"format" => "json", "count" => "999" },
parsed_params
)
end
def test_params_passing_path_parameter_is_string_when_not_html_request
get :test_params, params: { format: "json", id: 1 }
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{ "controller" => "test_case_test/test", "action" => "test_params",
"format" => "json", "id" => "1" },
parsed_params
)
end
def test_params_passing_with_frozen_values
assert_nothing_raised do
get :test_params, params: {
frozen: -"icy", frozens: [-"icy"].freeze, deepfreeze: { frozen: -"icy" }.freeze
}
end
parsed_params = ::JSON.parse(@response.body)
assert_equal(
{ "controller" => "test_case_test/test", "action" => "test_params",
"frozen" => "icy", "frozens" => ["icy"], "deepfreeze" => { "frozen" => "icy" } },
parsed_params
)
end
def test_params_passing_doesnt_modify_in_place
page = { name: "Page name", month: 4, year: 2004, day: 6 }
get :test_params, params: { page: page }
assert_equal 2004, page[:year]
end
test "set additional HTTP headers" do
@request.headers["Referer"] = "http://nohost.com/home"
@request.headers["Content-Type"] = "application/rss+xml"
get :test_headers
parsed_env = ActiveSupport::JSON.decode(@response.body)
assert_equal "http://nohost.com/home", parsed_env["HTTP_REFERER"]
assert_equal "application/rss+xml", parsed_env["CONTENT_TYPE"]
end
test "set additional env variables" do
@request.headers["HTTP_REFERER"] = "http://example.com/about"
@request.headers["CONTENT_TYPE"] = "application/json"
get :test_headers
parsed_env = ActiveSupport::JSON.decode(@response.body)
assert_equal "http://example.com/about", parsed_env["HTTP_REFERER"]
assert_equal "application/json", parsed_env["CONTENT_TYPE"]
end
def test_using_as_json_sets_request_content_type_to_json
post :render_body, params: { bool_value: true, str_value: "string", num_value: 2 }, as: :json
assert_equal "application/json", @request.headers["CONTENT_TYPE"]
assert_equal true, @request.request_parameters["bool_value"]
assert_equal "string", @request.request_parameters["str_value"]
assert_equal 2, @request.request_parameters["num_value"]
end
def test_using_as_json_sets_format_json
post :render_body, params: { bool_value: true, str_value: "string", num_value: 2 }, as: :json
assert_equal "json", @request.format
end
def test_using_as_json_with_empty_params
post :test_params, params: { foo: { bar: [] } }, as: :json
assert_equal({ "bar" => [] }, JSON.load(response.body)["foo"])
end
def test_using_as_json_with_path_parameters
post :test_params, params: { id: "12345" }, as: :json
assert_equal("12345", @request.path_parameters[:id])
end
def test_mutating_content_type_headers_for_plain_text_files_sets_the_header
@request.headers["Content-Type"] = "text/plain"
post :render_body, params: { name: "foo.txt" }
assert_equal "text/plain", @request.headers["Content-type"]
assert_equal "foo.txt", @request.request_parameters[:name]
assert_equal "render_body", @request.path_parameters[:action]
end
def test_mutating_content_type_headers_for_html_files_sets_the_header
@request.headers["Content-Type"] = "text/html"
post :render_body, params: { name: "foo.html" }
assert_equal "text/html", @request.headers["Content-type"]
assert_equal "foo.html", @request.request_parameters[:name]
assert_equal "render_body", @request.path_parameters[:action]
end
def test_mutating_content_type_headers_for_non_registered_mime_type_raises_an_error
assert_raises(RuntimeError) do
@request.headers["Content-Type"] = "type/fake"
post :render_body, params: { name: "foo.fake" }
end
end
def test_id_converted_to_string
get :test_params, params: {
id: 20, foo: Object.new
}
assert_kind_of String, @request.path_parameters[:id]
end
def test_array_path_parameter_handled_properly
with_routing do |set|
set.draw do
get "file/*path", to: "test_case_test/test#test_params"
ActiveSupport::Deprecation.silence do
get ":controller/:action"
end
end
get :test_params, params: { path: ["hello", "world"] }
assert_equal ["hello", "world"], @request.path_parameters[:path]
assert_equal "hello/world", @request.path_parameters[:path].to_param
end
end
def test_assert_realistic_path_parameters
get :test_params, params: { id: 20, foo: Object.new }
# All elements of path_parameters should use Symbol keys
@request.path_parameters.each_key do |key|
assert_kind_of Symbol, key
end
end
def test_with_routing_places_routes_back
assert @routes
routes_id = @routes.object_id
begin
with_routing { raise "fail" }
fail "Should not be here."
rescue RuntimeError
end
assert @routes
assert_equal routes_id, @routes.object_id
end
def test_remote_addr
get :test_remote_addr
assert_equal "0.0.0.0", @response.body
@request.remote_addr = "192.0.0.1"
get :test_remote_addr
assert_equal "192.0.0.1", @response.body
end
def test_header_properly_reset_after_remote_http_request
get :test_params, xhr: true
assert_nil @request.env["HTTP_X_REQUESTED_WITH"]
assert_nil @request.env["HTTP_ACCEPT"]
end
def test_xhr_with_params
get :test_params, params: { id: 1 }, xhr: true
assert_equal({ "id" => "1", "controller" => "test_case_test/test", "action" => "test_params" }, ::JSON.parse(@response.body))
end
def test_xhr_with_session
get :set_session, xhr: true
assert_equal "A wonder", session["string"], "A value stored in the session should be available by string key"
assert_equal "A wonder", session[:string], "Test session hash should allow indifferent access"
assert_equal "it works", session["symbol"], "Test session hash should allow indifferent access"
assert_equal "it works", session[:symbol], "Test session hash should allow indifferent access"
end
def test_params_reset_between_post_requests
post :no_op, params: { foo: "bar" }
assert_equal "bar", @request.params[:foo]
post :no_op
assert_predicate @request.params[:foo], :blank?
end
def test_filtered_parameters_reset_between_requests
get :no_op, params: { foo: "bar" }
assert_equal "bar", @request.filtered_parameters[:foo]
get :no_op, params: { foo: "baz" }
assert_equal "baz", @request.filtered_parameters[:foo]
end
def test_raw_post_reset_between_post_requests
post :no_op, params: { foo: "bar" }
assert_equal "foo=bar", @request.raw_post
post :no_op, params: { foo: "baz" }
assert_equal "foo=baz", @request.raw_post
end
def test_content_length_reset_after_post_request
post :no_op, params: { foo: "bar" }
assert_not_equal 0, @request.content_length
get :no_op
assert_equal 0, @request.content_length
end
def test_path_is_kept_after_the_request
get :test_params, params: { id: "foo" }
assert_equal "/test_case_test/test/test_params/foo", @request.path
end
def test_path_params_reset_between_request
get :test_params, params: { id: "foo" }
assert_equal "foo", @request.path_parameters[:id]
get :test_params
assert_nil @request.path_parameters[:id]
end
def test_request_protocol_is_reset_after_request
get :test_protocol
assert_equal "http://", @response.body
@request.env["HTTPS"] = "on"
get :test_protocol
assert_equal "https://", @response.body
@request.env.delete("HTTPS")
get :test_protocol
assert_equal "http://", @response.body
end
def test_request_format
get :test_format, params: { format: "html" }
assert_equal "text/html", @response.body
get :test_format, params: { format: "json" }
assert_equal "application/json", @response.body
get :test_format, params: { format: "xml" }
assert_equal "application/xml", @response.body
get :test_format
assert_equal "text/html", @response.body
end
def test_request_format_kwarg
get :test_format, format: "html"
assert_equal "text/html", @response.body
get :test_format, format: "json"
assert_equal "application/json", @response.body
get :test_format, format: "xml"
assert_equal "application/xml", @response.body
get :test_format
assert_equal "text/html", @response.body
end
def test_request_format_kwarg_overrides_params
get :test_format, format: "json", params: { format: "html" }
assert_equal "application/json", @response.body
end
def test_request_format_kwarg_doesnt_mutate_params
params = { foo: "bar" }.freeze
assert_nothing_raised do
get :test_format, format: "json", params: params
end
end
def test_should_have_knowledge_of_client_side_cookie_state_even_if_they_are_not_set
cookies["foo"] = "bar"
get :no_op
assert_equal "bar", cookies["foo"]
end
def test_cookies_should_be_escaped_properly
cookies["foo"] = "+"
get :render_cookie
assert_equal "+", @response.body
end
def test_should_detect_if_cookie_is_deleted
cookies["foo"] = "bar"
get :delete_cookie
assert_nil cookies["foo"]
end
def test_multiple_mixed_method_process_should_scrub_rack_input
post :test_params, params: { id: 1, foo: "an foo" }
assert_equal({ "id" => "1", "foo" => "an foo", "controller" => "test_case_test/test", "action" => "test_params" }, ::JSON.parse(@response.body))
get :test_params, params: { bar: "an bar" }
assert_equal({ "bar" => "an bar", "controller" => "test_case_test/test", "action" => "test_params" }, ::JSON.parse(@response.body))
end
%w(controller response request).each do |variable|
%w(get post put delete head process).each do |method|
define_method("test_#{variable}_missing_for_#{method}_raises_error") do
remove_instance_variable "@#{variable}"
begin
send(method, :test_remote_addr)
assert false, "expected RuntimeError, got nothing"
rescue RuntimeError => error
assert_match(%r{@#{variable} is nil}, error.message)
rescue => error
assert false, "expected RuntimeError, got #{error.class}"
end
end
end
end
FILES_DIR = File.expand_path("../fixtures/multipart", __dir__)
READ_BINARY = "rb:binary"
READ_PLAIN = "r:binary"
def test_test_uploaded_file
filename = "ruby_on_rails.jpg"
path = "#{FILES_DIR}/#{filename}"
content_type = "image/png"
expected = File.read(path)
expected.force_encoding(Encoding::BINARY)
file = Rack::Test::UploadedFile.new(path, content_type)
assert_equal filename, file.original_filename
assert_equal content_type, file.content_type
assert_equal file.path, file.local_path
assert_equal expected, file.read
new_content_type = "new content_type"
file.content_type = new_content_type
assert_equal new_content_type, file.content_type
end
def test_test_uploaded_file_with_binary
filename = "ruby_on_rails.jpg"
path = "#{FILES_DIR}/#{filename}"
content_type = "image/png"
binary_uploaded_file = Rack::Test::UploadedFile.new(path, content_type, :binary)
assert_equal File.open(path, READ_BINARY).read, binary_uploaded_file.read
plain_uploaded_file = Rack::Test::UploadedFile.new(path, content_type)
assert_equal File.open(path, READ_PLAIN).read, plain_uploaded_file.read
end
def test_fixture_file_upload_with_binary
filename = "ruby_on_rails.jpg"
path = "#{FILES_DIR}/#{filename}"
content_type = "image/jpeg"
binary_file_upload = fixture_file_upload(path, content_type, :binary)
assert_equal File.open(path, READ_BINARY).read, binary_file_upload.read
plain_file_upload = fixture_file_upload(path, content_type)
assert_equal File.open(path, READ_PLAIN).read, plain_file_upload.read
end
def test_fixture_file_upload_should_be_able_access_to_tempfile
file = fixture_file_upload(FILES_DIR + "/ruby_on_rails.jpg", "image/jpeg")
assert_respond_to file, :tempfile
end
def test_fixture_file_upload
post :test_file_upload,
params: {
file: fixture_file_upload(FILES_DIR + "/ruby_on_rails.jpg", "image/jpeg")
}
assert_equal "45142", @response.body
end
def test_fixture_file_upload_ignores_fixture_path_given_full_path
TestCaseTest.stub :fixture_path, __dir__ do
uploaded_file = fixture_file_upload("#{FILES_DIR}/ruby_on_rails.jpg", "image/jpeg")
assert_equal File.open("#{FILES_DIR}/ruby_on_rails.jpg", READ_PLAIN).read, uploaded_file.read
end
end
def test_fixture_file_upload_ignores_nil_fixture_path
uploaded_file = fixture_file_upload("#{FILES_DIR}/ruby_on_rails.jpg", "image/jpeg")
assert_equal File.open("#{FILES_DIR}/ruby_on_rails.jpg", READ_PLAIN).read, uploaded_file.read
end
def test_action_dispatch_uploaded_file_upload
filename = "ruby_on_rails.jpg"
path = "#{FILES_DIR}/#{filename}"
post :test_file_upload, params: {
file: Rack::Test::UploadedFile.new(path, "image/jpeg", true)
}
assert_equal "45142", @response.body
end
def test_test_uploaded_file_exception_when_file_doesnt_exist
assert_raise(RuntimeError) { Rack::Test::UploadedFile.new("non_existent_file") }
end
def test_redirect_url_only_cares_about_location_header
get :create
assert_response :created
# Redirect URL doesn't care that it wasn't a :redirect response.
assert_equal "/resource", @response.redirect_url
assert_equal @response.redirect_url, redirect_to_url
# Must be a :redirect response.
assert_raise(ActiveSupport::TestCase::Assertion) do
assert_redirected_to "/resource"
end
end
def test_exception_in_action_reaches_test
assert_raise(RuntimeError) do
process :boom, method: "GET"
end
end
def test_request_state_is_cleared_after_exception
assert_raise(RuntimeError) do
process :boom,
method: "GET",
params: { q: "test1" }
end
process :test_query_string,
method: "GET",
params: { q: "test2" }
assert_equal "q=test2", @response.body
end
def test_parsed_body_without_as_option
post :render_json, body: { foo: "heyo" }
assert_equal({ "foo" => "heyo" }, response.parsed_body)
end
def test_parsed_body_with_as_option
post :render_json, body: { foo: "heyo" }.to_json, as: :json
assert_equal({ "foo" => "heyo" }, response.parsed_body)
end
def test_reset_instance_variables_after_each_request
get :increment_count
assert_equal "1", response.body
get :increment_count
assert_equal "1", response.body
end
def test_can_read_instance_variables_before_or_after_request
assert_nil @controller.instance_variable_get(:@counter)
get :increment_count
assert_equal "1", response.body
assert_equal 1, @controller.instance_variable_get(:@counter)
get :increment_count
assert_equal "1", response.body
assert_equal 1, @controller.instance_variable_get(:@counter)
end
def test_ivars_are_not_reset_if_they_are_given_a_value_before_any_requests
@controller.instance_variable_set(:@counter, 3)
get :increment_count
assert_equal "4", response.body
assert_equal 4, @controller.instance_variable_get(:@counter)
get :increment_count
assert_equal "5", response.body
assert_equal 5, @controller.instance_variable_get(:@counter)
get :increment_count
assert_equal "6", response.body
assert_equal 6, @controller.instance_variable_get(:@counter)
end
def test_ivars_are_reset_if_they_are_given_a_value_after_some_requests
get :increment_count
assert_equal "1", response.body
assert_equal 1, @controller.instance_variable_get(:@counter)
@controller.instance_variable_set(:@counter, 3)
get :increment_count
assert_equal "1", response.body
assert_equal 1, @controller.instance_variable_get(:@counter)
end
end
class ResponseDefaultHeadersTest < ActionController::TestCase
class TestController < ActionController::Base
def remove_header
headers.delete params[:header]
head :ok, "C" => "3"
end
# Render a head response, but don't touch default headers
def leave_alone
head :ok
end
end
def before_setup
@original = ActionDispatch::Response.default_headers
@defaults = { "A" => "1", "B" => "2" }
ActionDispatch::Response.default_headers = @defaults
super
end
teardown do
ActionDispatch::Response.default_headers = @original
end
def setup
super
@controller = TestController.new
@request.env["PATH_INFO"] = nil
@routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
r.draw do
ActiveSupport::Deprecation.silence do
get ":controller(/:action(/:id))"
end
end
end
end
test "response contains default headers" do
get :leave_alone
# Response headers start out with the defaults
assert_equal @defaults.merge("Content-Type" => "text/html"), response.headers
end
test "response deletes a default header" do
get :remove_header, params: { header: "A" }
assert_response :ok
# After a request, the response in the test case doesn't have the
# defaults merged on top again.
assert_not_includes response.headers, "A"
assert_includes response.headers, "B"
assert_includes response.headers, "C"
end
end
module EngineControllerTests
class Engine < ::Rails::Engine
isolate_namespace EngineControllerTests
routes.draw do
get "/" => "bar#index"
end
end
class BarController < ActionController::Base
def index
render plain: "bar"
end
end
class BarControllerTest < ActionController::TestCase
tests BarController
def test_engine_controller_route
get :index
assert_equal @response.body, "bar"
end
end
class BarControllerTestWithExplicitRouteSet < ActionController::TestCase
tests BarController
def setup
@routes = Engine.routes
end
def test_engine_controller_route
get :index
assert_equal @response.body, "bar"
end
end
end
class InferringClassNameTest < ActionController::TestCase
def test_determine_controller_class
assert_equal ContentController, determine_class("ContentControllerTest")
end
def test_determine_controller_class_with_nonsense_name
assert_nil determine_class("HelloGoodBye")
end
def test_determine_controller_class_with_sensible_name_where_no_controller_exists
assert_nil determine_class("NoControllerWithThisNameTest")
end
private
def determine_class(name)
ActionController::TestCase.determine_default_controller_class(name)
end
end
class ManuallySetNameTest < ActionController::TestCase
tests ContentController
def test_controller_class_can_be_set_manually_not_just_inferred
assert_equal ContentController, self.class.controller_class
end
end
class ManuallySetSymbolNameTest < ActionController::TestCase
tests :content
def test_set_controller_class_using_symbol
assert_equal ContentController, self.class.controller_class
end
end
class ManuallySetStringNameTest < ActionController::TestCase
tests "content"
def test_set_controller_class_using_string
assert_equal ContentController, self.class.controller_class
end
end
class NamedRoutesControllerTest < ActionController::TestCase
tests ContentController
def test_should_be_able_to_use_named_routes_before_a_request_is_done
with_routing do |set|
set.draw { resources :contents }
assert_equal "http://test.host/contents/new", new_content_url
assert_equal "http://test.host/contents/1", content_url(id: 1)
end
end
end
class AnonymousControllerTest < ActionController::TestCase
def setup
@controller = Class.new(ActionController::Base) do
def index
render plain: params[:controller]
end
end.new
@routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
r.draw do
ActiveSupport::Deprecation.silence do
get ":controller(/:action(/:id))"
end
end
end
end
def test_controller_name
get :index
assert_equal "anonymous", @response.body
end
end
class RoutingDefaultsTest < ActionController::TestCase
def setup
@controller = Class.new(ActionController::Base) do
def post
render plain: request.fullpath
end
def project
render plain: request.fullpath
end
end.new
@routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
r.draw do
get "/posts/:id", to: "anonymous#post", bucket_type: "post"
get "/projects/:id", to: "anonymous#project", defaults: { bucket_type: "project" }
end
end
end
def test_route_option_can_be_passed_via_process
get :post, params: { id: 1, bucket_type: "post" }
assert_equal "/posts/1", @response.body
end
def test_route_default_is_not_required_for_building_request_uri
get :project, params: { id: 2 }
assert_equal "/projects/2", @response.body
end
end