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Caleb Spare bc29313722 testing: add TB.Helper to better support test helpers 
This CL implements the proposal at
https://github.com/golang/proposal/blob/master/design/4899-testing-helper.md.

It's based on Josh's CL 79890043 from a few years ago:
https://codereview.appspot.com/79890043 but makes several changes,
most notably by using the new CallersFrames API so that it works with
mid-stack inlining.

Another detail came up while I was working on this: I didn't want the
user to be able to call t.Helper from inside their TestXxx function
directly (which would mean we'd print a file:line from inside the
testing package itself), so I explicitly prevented this from working.

Fixes #4899.

Change-Id: I37493edcfb63307f950442bbaf993d1589515310
Reviewed-on: https://go-review.googlesource.com/38796
Run-TryBot: Caleb Spare <cespare@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 		2017-04-14 16:47:25 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc spec: clarify size hint for make of maps 2017-04-13 16:15:45 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc cmd/internal/obj: stop storing Text flags in From3 2017-04-12 21:53:39 +00:00
src testing: add TB.Helper to better support test helpers 2017-04-14 16:47:25 +00:00
test cmd/compile: add test for Issue 12536 2017-04-14 14:16:09 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
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README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.

Contributing

Go is the work of hundreds of contributors. We appreciate your help!

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that the Go project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.