[PATCH] D110160: [clang][tooling] NFC: Refactor command-line diagnostic tests

[Jan Svoboda via Phabricator via cfe-commits]

jansvoboda11 updated this revision to Diff 374383.
jansvoboda11 added a comment.

Use empty files and `-E`


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110160/new/

https://reviews.llvm.org/D110160

Files:
  clang/unittests/Tooling/ToolingTest.cpp

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