spec: mocha => rspec-mocks for initializers

Change-Id: Icaf253908a7b66c80878ca133bd758d52dfe5447
Reviewed-on: https://gerrit.instructure.com/120500
Tested-by: Jenkins
Reviewed-by: Rob Orton <rob@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>

spec/initializers/active_record_spec.rb

@@ -241,7 +241,7 @@ module ActiveRecord
 
       context "with postgres 90300" do
         before do
-          scope.connection.stubs(:postgresql_version).returns(90300)
+          allow(scope.connection).to receive(:postgresql_version).and_return(90300)
         end
 
         it "uses FOR UPDATE on a normal exclusive lock" do
@@ -255,7 +255,7 @@ module ActiveRecord
 
       context "with postgres 90299" do
         before do
-          scope.connection.stubs(:postgresql_version).returns(90299)
+          allow(scope.connection).to receive(:postgresql_version).and_return(90299)
         end
 
         it "uses FOR UPDATE on a normal exclusive lock" do

spec/initializers/linked_in_spec.rb

@@ -22,8 +22,8 @@ describe CanvasLinkedInConfig do
 
   describe ".call" do
     it "returns a config with indifferent access" do
-      plugin = stub(settings: {client_id: "abcdefg", client_secret_dec: "12345"})
-      Canvas::Plugin.stubs(:find).with(:linked_in).returns(plugin)
+      plugin = double(settings: {client_id: "abcdefg", client_secret_dec: "12345"})
+      allow(Canvas::Plugin).to receive(:find).with(:linked_in).and_return(plugin)
       output = described_class.call
       expect(output['api_key']).to eq("abcdefg")
       expect(output[:api_key]).to eq("abcdefg")

spec/initializers/ruby_version_compat_spec.rb

@@ -53,8 +53,8 @@ describe 'ruby_version_compat' do
       testfile = fixture_file_upload("scribd_docs/txt.txt", "text/plain", true)
       testfile.instance_variable_set(:@original_filename, nil)
       controller = ApplicationController.new
-      controller.stubs(:params).returns({ :upload => { :file1 => testfile } })
-      controller.stubs(:request).returns(mock(:path => "/upload"))
+      allow(controller).to receive(:params).and_return({ :upload => { :file1 => testfile } })
+      allow(controller).to receive(:request).and_return(double(:path => "/upload"))
       expect { controller.force_utf8_params() }.to_not raise_error
       expect(testfile.original_filename).to be_nil
     end

spec/initializers/twitter_spec.rb

@@ -22,8 +22,8 @@ describe CanvasTwitterConfig do
 
   describe "#call" do
     it "returns a config with indifference access" do
-      plugin = stub(settings: {consumer_key: "abcdefg", consumer_secret_dec: "12345"})
-      Canvas::Plugin.stubs(:find).with(:twitter).returns(plugin)
+      plugin = double(settings: {consumer_key: "abcdefg", consumer_secret_dec: "12345"})
+      allow(Canvas::Plugin).to receive(:find).with(:twitter).and_return(plugin)
       output = described_class.call
       expect(output['api_key']).to eq("abcdefg")
       expect(output[:api_key]).to eq("abcdefg")