- remove tests already thoroughly covered in unit tests
- #3139 part 2 of 3
- make checks of `<form>` tag helper more consistent with others
- use a tag helper initializer but testing every variant; covered in unit tests
- remove `MvcStartupTest` and associated web site
- scenario covered elsewhere
- remove `PrecompilationTest.PrecompiledView_RendersCorrectly()`
- scenario covered elsewhere and shouldn't do I/O on checked-in files
- use `MvcTestFixture` instead of `TestHelper`
- part of #3139
- continue to test e2e interaction of `FlushAsync()` with sections, partials, et cetera
- remove `FlushPointTest.FlushBeforeCallingLayout()`
- `RazorPageTest.FlushAsync_ThrowsIfTheLayoutHasBeenSet()` unit test covers the scenario
- Added functional tests to validate data created from a `SelectTagHelper` does not impact following `<select>` tags.
- Also moved the new `SelectTagHelper` communication flow into `TagHelper.Init`.
#3347
- #3227
- much of change is to tests, creating and passing `ModelMetadata`
- updated `InputFormatterContext` to make `ModelMetadata` available to `JsonInputFormatter`
- walk `ModelMetadata` tree to get information about property with an issue
- add missing `null` checks in `ModelStateDictionaryExtensions`
- Changed all `GetChildContentAsync` calls to come from `TagHelperOutput` instead of `TagHelperContext`.
- Updated `ReaderAtEndOfFormTagHelper` to properly detect changes inside of a `Form`s body by calling the `Init` method.
- Add test to `RenderAtEndOfFormTagHelperTest`.
aspnet/Razor#571
The missing piece here is is that StringOutputFormatter needs to set the
ContentType so that it gets overridden. The problem is that the formatter
is likely called with something like application/json, but decides to
write a string anyway. So because we're saying 'yes we can write' we also
need to override what we're writing.