Commits on Mar 6, 2019

1. Windows: add --incompatible_windows_native_test_wrapper …

   Add the --incompatible_windows_native_test_wrapper
   flag (default: false). This flag has no effect on
   platforms other than Windows.
   
   When using `bazel test`, Bazel does not execute
   tests directly. Instead Bazel runs a "test
   wrapper" as a subprocess, which sets up the
   environment for the test and runs the test.
   
   By default, Bazel uses a Bash script
   (`@bazel_tools//tools/test:test-setup.sh`) as the
   test wrapper, on all platforms. The new flag
   allows using an alternative test wrapper written
   in C++ that does not depend on Bash.
   
   Flag semantics:
   - When true: Bazel uses the C++ test wrapper from
     `@bazel_tools//tools/test:tw`. This test wrapper
     does not depend on Bash.
   - When false: Bazel uses the Bash script test
     wrapper also used on every other platform, from
     `@bazel_tools//tools/test:test-setup.sh`. This
     script requires Bash.
   
   Incompatible flag: bazelbuild#6622
   
   Related: bazelbuild#5508
   
   RELNOTES[NEW]: Added --incompatible_windows_native_test_wrapper flag: enables using the Bash-less test wrapper on Windows. (No-op on other platforms.)

   

   laszlocsomor committed Mar 6, 2019
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