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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
..
archive archive/zip: parallelize benchmarks 2017-03-15 18:26:51 +00:00
bufio
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builtin
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bytes strings: optimize Count for amd64 2017-04-07 14:25:13 +00:00
cmd cmd/dist: fix incorrect platform string shared by all tests 2017-04-14 03:15:59 +00:00
compress Revert "all: test adjustments for the iOS builder" 2017-03-04 00:01:14 +00:00
container
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context all: fix minor misspellings 2017-04-03 23:19:07 +00:00
crypto crypto/aes: fix wrong instruction on ppc64le implementation 2017-04-11 20:10:08 +00:00
database/sql database/sql: correctly guard the query Row preventing early release 2017-04-12 17:36:26 +00:00
debug debug/pe: add TestBuildingWindowsGUI 2017-03-30 01:19:57 +00:00
encoding encoding/asn1: support 31 bit identifiers with OID 2017-04-13 00:49:49 +00:00
errors
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expvar expvar: add benchmark for (*Map).Set with per-goroutine keys 2017-03-10 19:09:48 +00:00
flag flag: validate Int and Uint values to be in range 2017-03-21 17:00:26 +00:00
fmt
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go net/http/fcgi: expose cgi env vars in request context 2017-04-13 04:38:23 +00:00
hash hash/crc32: optimize arm64 crc32 implementation 2017-04-13 12:44:10 +00:00
html html/template: panic if predefined escapers are found in pipelines during rewriting 2017-04-10 15:08:47 +00:00
image image/png: decode Gray8 transparent images. 2017-03-17 07:50:05 +00:00
index/suffixarray
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internal internal/poll: rename RecvFrom to ReadFrom for consistency 2017-04-13 03:26:58 +00:00
io
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log
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math math/bits: support negative rotation count and remove RotateRight 2017-04-11 23:57:24 +00:00
mime mime: fix panic parsing 'encoded-word' 2017-04-09 19:03:00 +00:00
net net: validate network in Dial{,IP} and Listen{Packet,IP} for IP networks 2017-04-14 08:44:45 +00:00
os os: handle relative symlinks starting with slash in Stat on windows 2017-04-12 23:33:11 +00:00
path path/filepath: add test to walk symlink 2017-04-05 02:31:45 +00:00
plugin plugin: resolve random crash when calling exported functions 2017-04-12 12:34:25 +00:00
reflect reflect: add MakeMapWithSize for creating maps with size hint 2017-04-04 20:01:43 +00:00
regexp regexp: document that Longest method is not concurrent-safe 2017-04-07 21:12:11 +00:00
runtime runtime/trace: iterate over frames instead of PCs 2017-04-14 12:21:21 +00:00
sort
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strconv strconv: optimize decimal ints formatting with smallsString 2017-03-22 16:03:28 +00:00
strings strings: optimize Count for amd64 2017-04-07 14:25:13 +00:00
sync
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syscall syscall: fix TestGroupCleanup{UserNamespace} on Alpine 2017-04-13 22:47:55 +00:00
testing testing: add TB.Helper to better support test helpers 2017-04-14 16:47:25 +00:00
text text/template: fix handling of empty blocks 2017-04-04 15:46:02 +00:00
time testing/quick: generate all possible int64, uint64 values 2017-04-03 14:01:25 +00:00
unicode
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unsafe
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vendor/golang_org/x vendor: update golang_org/x/crypto packages 2017-04-14 13:39:57 +00:00
Make.dist
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all.bash
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all.bat
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all.rc
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androidtest.bash
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bootstrap.bash
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buildall.bash src/*.bash: use tabs consistently 2017-03-09 21:30:31 +00:00
clean.bash
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clean.bat
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clean.rc
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cmp.bash
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iostest.bash *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
make.bash *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
make.bat
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make.rc
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naclmake.bash
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nacltest.bash
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race.bash
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race.bat
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run.bash *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
run.bat
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run.rc
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