* Normalize white space around source code strings before producing
diffs by trimming and appending a single newline character.
* Write an empty line between the source code and diff text in
generation files.
* Run dart format on all test files.
With these changes you should be able to run the hot reload suite with
`--diff write` and dart format the code multiple times without
introducing changes in the file.
Change-Id: Ifc0b1dd7032bd448f5f6568c5aa3c18dde076c71
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/405247
Reviewed-by: Mark Zhou <markzipan@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>
MarkZ