Replace permissive Mocha expectations

Step 6 in rails#33162

When using Mocha like this:

`ActiveRecord::Base.expects(:establish_connection).with(some_args)`,

the expectations created look something like this:

```
@EXPECTATIONS=
          [#<Expectation:0x561350d968e0 expected exactly once, not yet invoked: ActiveRecord::Base.establish_connection("adapter" => "mysql2", "database" => nil) >,
           #<Expectation:0x561350dab8f8 allowed any number of times, not yet invoked: ActiveRecord::Base.establish_connection(any_parameters) >,
           #<Expectation:0x561350dc30c0 allowed any number of times, not yet invoked: ActiveRecord::Base.connection(any_parameters) >]
```

Minitest mocking (and the way we use it in `MethodCallAssertions`)
expressly refuses to facilitate such permissiive expectations, insisting
that all calls be specified in the actual expected order.

This patch replaces such calls to `Mocha#expects` with
`ActiveSupport::Testing::MethodCallAssertions` and specifies all
expected calls in the epxected order.

activerecord/test/cases/tasks/mysql_rake_test.rb

@@ -21,11 +21,17 @@ def teardown
       end
 
       def test_establishes_connection_without_database
-        ActiveRecord::Base.stubs(:establish_connection)
         ActiveRecord::Base.stub(:connection, @connection) do
-          ActiveRecord::Base.expects(:establish_connection).
-            with("adapter" => "mysql2", "database" => nil)
-          ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              [ "adapter" => "mysql2", "database" => nil ],
+              [ "adapter" => "mysql2", "database" => "my-app-db" ],
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          end
         end
       end
 
@@ -58,12 +64,17 @@ def test_creates_database_with_given_collation
       end
 
       def test_establishes_connection_to_database
-        ActiveRecord::Base.stubs(:establish_connection)
-
         ActiveRecord::Base.stub(:connection, @connection) do
-          ActiveRecord::Base.expects(:establish_connection).with(@configuration)
-
-          ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              ["adapter" => "mysql2", "database" => nil],
+              [@configuration]
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          end
         end
       end
 

activerecord/test/cases/tasks/postgresql_rake_test.rb

@@ -21,14 +21,24 @@ def teardown
       end
 
       def test_establishes_connection_to_postgresql_database
-        ActiveRecord::Base.stubs(:establish_connection)
         ActiveRecord::Base.stub(:connection, @connection) do
-          ActiveRecord::Base.expects(:establish_connection).with(
-            "adapter"            => "postgresql",
-            "database"           => "postgres",
-            "schema_search_path" => "public"
-          )
-          ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              [
+                "adapter"            => "postgresql",
+                "database"           => "postgres",
+                "schema_search_path" => "public"
+              ],
+              [
+                "adapter"            => "postgresql",
+                "database"           => "my-app-db"
+              ]
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          end
         end
       end
 
@@ -78,11 +88,23 @@ def test_creates_database_with_given_collation_and_ctype
       end
 
       def test_establishes_connection_to_new_database
-        ActiveRecord::Base.stubs(:establish_connection)
         ActiveRecord::Base.stub(:connection, @connection) do
-          ActiveRecord::Base.expects(:establish_connection).with(@configuration)
-
-          ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              [
+                "adapter"            => "postgresql",
+                "database"           => "postgres",
+                "schema_search_path" => "public"
+              ],
+              [
+                @configuration
+              ]
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.create @configuration
+          end
         end
       end
 
@@ -207,15 +229,24 @@ def test_clears_active_connections
       end
 
       def test_establishes_connection_to_postgresql_database
-        ActiveRecord::Base.stubs(:establish_connection)
         with_stubbed_connection do
-          ActiveRecord::Base.expects(:establish_connection).with(
-            "adapter"            => "postgresql",
-            "database"           => "postgres",
-            "schema_search_path" => "public"
-          )
-
-          ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              [
+                "adapter"            => "postgresql",
+                "database"           => "postgres",
+                "schema_search_path" => "public"
+              ],
+              [
+                "adapter"            => "postgresql",
+                "database"           => "my-app-db"
+              ]
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+          end
         end
       end
 
@@ -244,11 +275,23 @@ def test_creates_database
       end
 
       def test_establishes_connection
-        ActiveRecord::Base.stubs(:establish_connection)
         with_stubbed_connection do
-          ActiveRecord::Base.expects(:establish_connection).with(@configuration)
-
-          ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+          assert_called_with(
+            ActiveRecord::Base,
+            :establish_connection,
+            [
+              [
+                "adapter"            => "postgresql",
+                "database"           => "postgres",
+                "schema_search_path" => "public"
+              ],
+              [
+                @configuration
+              ]
+            ]
+          ) do
+            ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+          end
         end
       end