Refactor request query string parsing tests

actionpack/lib/action_controller/request.rb

@@ -412,9 +412,11 @@ EOM
       @parser.body
     end
 
-    def query_parameters
+    # Override Rack's GET method to support nested query strings
+    def GET
       @parser.query_parameters
     end
+    alias_method :query_parameters, :GET
 
     def request_parameters
       @parser.request_parameters

actionpack/test/controller/query_string_parsing_test.rb

@@ -0,0 +1,118 @@
+class QueryStringParsingTest <ActionController::IntegrationTest
+  class TestController < ActionController::Base
+    class << self
+      attr_accessor :last_query_parameters
+    end
+
+    def parse
+      self.class.last_query_parameters = request.query_parameters
+      head :ok
+    end
+  end
+
+  def teardown
+    TestController.last_query_parameters = nil
+  end
+
+  test "query string" do
+    assert_parses(
+      {"action" => "create_customer", "full_name" => "David Heinemeier Hansson", "customerId" => "1"},
+      "action=create_customer&full_name=David%20Heinemeier%20Hansson&customerId=1"
+    )
+  end
+
+  test "deep query string" do
+    assert_parses(
+      {'x' => {'y' => {'z' => '10'}}},
+      "x[y][z]=10"
+    )
+  end
+
+  test "deep query string with array" do
+    assert_parses({'x' => {'y' => {'z' => ['10']}}}, 'x[y][z][]=10')
+    assert_parses({'x' => {'y' => {'z' => ['10', '5']}}}, 'x[y][z][]=10&x[y][z][]=5')
+  end
+
+  test "deep query string with array of hash" do
+    assert_parses({'x' => {'y' => [{'z' => '10'}]}}, 'x[y][][z]=10')
+    assert_parses({'x' => {'y' => [{'z' => '10', 'w' => '10'}]}}, 'x[y][][z]=10&x[y][][w]=10')
+    assert_parses({'x' => {'y' => [{'z' => '10', 'v' => {'w' => '10'}}]}}, 'x[y][][z]=10&x[y][][v][w]=10')
+  end
+
+  test "deep query string with array of hashes with one pair" do
+    assert_parses({'x' => {'y' => [{'z' => '10'}, {'z' => '20'}]}}, 'x[y][][z]=10&x[y][][z]=20')
+  end
+
+  test "deep query string with array of hashes with multiple pairs" do
+    assert_parses(
+      {'x' => {'y' => [{'z' => '10', 'w' => 'a'}, {'z' => '20', 'w' => 'b'}]}},
+      'x[y][][z]=10&x[y][][w]=a&x[y][][z]=20&x[y][][w]=b'
+    )
+  end
+
+  test "query string with nil" do
+    assert_parses(
+      { "action" => "create_customer", "full_name" => ''},
+      "action=create_customer&full_name="
+    )
+  end
+
+  test "query string with array" do
+    assert_parses(
+      { "action" => "create_customer", "selected" => ["1", "2", "3"]},
+      "action=create_customer&selected[]=1&selected[]=2&selected[]=3"
+    )
+  end
+
+  test "query string with amps" do
+    assert_parses(
+      { "action" => "create_customer", "name" => "Don't & Does"},
+      "action=create_customer&name=Don%27t+%26+Does"
+    )
+  end
+
+  test "query string with many equal" do
+    assert_parses(
+      { "action" => "create_customer", "full_name" => "abc=def=ghi"},
+      "action=create_customer&full_name=abc=def=ghi"
+    )
+  end
+
+  test "query string without equal" do
+    assert_parses({ "action" => nil }, "action")
+  end
+
+  test "query string with empty key" do
+    assert_parses(
+      { "action" => "create_customer", "full_name" => "David Heinemeier Hansson" },
+      "action=create_customer&full_name=David%20Heinemeier%20Hansson&=Save"
+    )
+  end
+
+  test "query string with many ampersands" do
+    assert_parses(
+      { "action" => "create_customer", "full_name" => "David Heinemeier Hansson"},
+      "&action=create_customer&&&full_name=David%20Heinemeier%20Hansson"
+    )
+  end
+
+  test "unbalanced query string with array" do
+    assert_parses(
+      {'location' => ["1", "2"], 'age_group' => ["2"]},
+      "location[]=1&location[]=2&age_group[]=2"
+    )
+  end
+
+  private
+    def assert_parses(expected, actual)
+      with_routing do |set|
+        set.draw do |map|
+          map.connect ':action', :controller => "query_string_parsing_test/test"
+        end
+
+        get "/parse", actual
+        assert_response :ok
+        assert_equal(expected, TestController.last_query_parameters)
+      end
+    end
+end

actionpack/test/controller/request_test.rb

@@ -407,114 +407,10 @@ class RequestTest < ActiveSupport::TestCase
 end
 
 class UrlEncodedRequestParameterParsingTest < ActiveSupport::TestCase
-  def setup
-    @query_string = "action=create_customer&full_name=David%20Heinemeier%20Hansson&customerId=1"
-    @query_string_with_empty = "action=create_customer&full_name="
-    @query_string_with_array = "action=create_customer&selected[]=1&selected[]=2&selected[]=3"
-    @query_string_with_amps  = "action=create_customer&name=Don%27t+%26+Does"
-    @query_string_with_multiple_of_same_name =
-      "action=update_order&full_name=Lau%20Taarnskov&products=4&products=2&products=3"
-    @query_string_with_many_equal = "action=create_customer&full_name=abc=def=ghi"
-    @query_string_without_equal = "action"
-    @query_string_with_many_ampersands =
-      "&action=create_customer&&&full_name=David%20Heinemeier%20Hansson"
-    @query_string_with_empty_key = "action=create_customer&full_name=David%20Heinemeier%20Hansson&=Save"
-  end
-
-  def test_query_string
-    assert_equal(
-      { "action" => "create_customer", "full_name" => "David Heinemeier Hansson", "customerId" => "1"},
-      ActionController::RequestParser.parse_query_parameters(@query_string)
-    )
-  end
-
-  def test_deep_query_string
-    expected = {'x' => {'y' => {'z' => '10'}}}
-    assert_equal(expected, ActionController::RequestParser.parse_query_parameters('x[y][z]=10'))
-  end
-
-  def test_deep_query_string_with_array
-    assert_equal({'x' => {'y' => {'z' => ['10']}}}, ActionController::RequestParser.parse_query_parameters('x[y][z][]=10'))
-    assert_equal({'x' => {'y' => {'z' => ['10', '5']}}}, ActionController::RequestParser.parse_query_parameters('x[y][z][]=10&x[y][z][]=5'))
-  end
-
-  def test_deep_query_string_with_array_of_hash
-    assert_equal({'x' => {'y' => [{'z' => '10'}]}}, ActionController::RequestParser.parse_query_parameters('x[y][][z]=10'))
-    assert_equal({'x' => {'y' => [{'z' => '10', 'w' => '10'}]}}, ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][w]=10'))
-    assert_equal({'x' => {'y' => [{'z' => '10', 'v' => {'w' => '10'}}]}}, ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][v][w]=10'))
-  end
-
-  def test_deep_query_string_with_array_of_hashes_with_one_pair
-    assert_equal({'x' => {'y' => [{'z' => '10'}, {'z' => '20'}]}}, ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][z]=20'))
-    assert_equal("10", ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][z]=20')["x"]["y"].first["z"])
-    assert_equal("10", ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][z]=20').with_indifferent_access[:x][:y].first[:z])
-  end
-
-  def test_deep_query_string_with_array_of_hashes_with_multiple_pairs
-    assert_equal(
-      {'x' => {'y' => [{'z' => '10', 'w' => 'a'}, {'z' => '20', 'w' => 'b'}]}},
-      ActionController::RequestParser.parse_query_parameters('x[y][][z]=10&x[y][][w]=a&x[y][][z]=20&x[y][][w]=b')
-    )
-  end
-
-  def test_query_string_with_nil
-    assert_equal(
-      { "action" => "create_customer", "full_name" => ''},
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_empty)
-    )
-  end
-
-  def test_query_string_with_array
-    assert_equal(
-      { "action" => "create_customer", "selected" => ["1", "2", "3"]},
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_array)
-    )
-  end
-
-  def test_query_string_with_amps
-    assert_equal(
-      { "action" => "create_customer", "name" => "Don't & Does"},
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_amps)
-    )
-  end
-
-  def test_query_string_with_many_equal
-    assert_equal(
-      { "action" => "create_customer", "full_name" => "abc=def=ghi"},
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_many_equal)
-    )
-  end
-
-  def test_query_string_without_equal
-    assert_equal(
-      { "action" => nil },
-      ActionController::RequestParser.parse_query_parameters(@query_string_without_equal)
-    )
-  end
-
-  def test_query_string_with_empty_key
-    assert_equal(
-      { "action" => "create_customer", "full_name" => "David Heinemeier Hansson" },
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_empty_key)
-    )
-  end
-
-  def test_query_string_with_many_ampersands
-    assert_equal(
-      { "action" => "create_customer", "full_name" => "David Heinemeier Hansson"},
-      ActionController::RequestParser.parse_query_parameters(@query_string_with_many_ampersands)
-    )
-  end
-
   def test_unbalanced_query_string_with_array
    assert_equal(
      {'location' => ["1", "2"], 'age_group' => ["2"]},
-  ActionController::RequestParser.parse_query_parameters("location[]=1&location[]=2&age_group[]=2")
+     ActionController::RequestParser.parse_request_parameters({'location[]' => ["1", "2"], 'age_group[]' => ["2"]})
-   )
-   assert_equal(
-     {'location' => ["1", "2"], 'age_group' => ["2"]},
-     ActionController::RequestParser.parse_request_parameters({'location[]' => ["1", "2"],
-  'age_group[]' => ["2"]})
    )
   end