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cmd/go: briefly document test caching in go test -h output

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Fixes #23971

Change-Id: I073f278cc058aa15a23c0ea06292c02d50a3df21
Reviewed-on: https://go-review.googlesource.com/95582
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Jean de Klerk 2018-02-20 17:26:57 -08:00 committed by Rob Pike
parent cde34780b7
commit 709317138f
2 changed files with 12 additions and 0 deletions
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6
src/cmd/go/alldocs.go
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@ -1738,6 +1738,12 @@
// the package list would have to appear before -myflag, but could appear // the package list would have to appear before -myflag, but could appear
// on either side of -v. // on either side of -v.
// //
// When 'go test' runs in package list mode, 'go test' caches successful
// package test results to avoid unnecessary repeated running of tests. To
// disable test caching, use any test flag or argument other than the
// cacheable flags. The idiomatic way to disable test caching explicitly
// is to use -count=1.
//
// To keep an argument for a test binary from being interpreted as a // To keep an argument for a test binary from being interpreted as a
// known flag or a package name, use -args (see 'go help test') which // known flag or a package name, use -args (see 'go help test') which
// passes the remainder of the command line through to the test binary // passes the remainder of the command line through to the test binary

6
src/cmd/go/internal/test/test.go
View File

@ -385,6 +385,12 @@ flag not known to the go test command. Continuing the example above,
the package list would have to appear before -myflag, but could appear the package list would have to appear before -myflag, but could appear
on either side of -v. on either side of -v.
When 'go test' runs in package list mode, 'go test' caches successful
package test results to avoid unnecessary repeated running of tests. To
disable test caching, use any test flag or argument other than the
cacheable flags. The idiomatic way to disable test caching explicitly
is to use -count=1.
To keep an argument for a test binary from being interpreted as a To keep an argument for a test binary from being interpreted as a
known flag or a package name, use -args (see 'go help test') which known flag or a package name, use -args (see 'go help test') which
passes the remainder of the command line through to the test binary passes the remainder of the command line through to the test binary