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[dev.typeparams] test: fix and update run.go's generics testing

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In a late change to golang.org/cl/320609, while going back and forth
on the meaning of the boolean result value for "checkFlags", I got one
of the cases wrong. As a result, rather than testing both default
flags and -G=3, we were (redundanly) testing default flags and -G=0.

I ran into this because in my local dev tree, I'm using types2 even
for -G=0, and evidently one of the recent types2 CLs changed the error
message in fixedbugs/issue10975.go. Fortunately, there haven't been
any other regressions despite lacking test coverage.

So this CL cleans things up a bit:

1. Fixes that test to use -lang=go1.17, so types2 reports the old
error message again.

2. Renames "checkFlags" to "validForGLevel" so the boolean result is
harder to get wrong.

3. Removes the blanket deny list of all -m tests, and instead adds the
specific tests that are still failing. This effectively extends -G=3
coverage to another 27 tests that were using -m but already passing,
so we can make sure they don't regress again.

4. Adds a -f flag to force running tests even if they're in the deny
list, to make it easier to test whether they're still failing without
having to edit run.go.

Change-Id: I058d9d90d81a92189e54c6f591d95fb617fede53
Reviewed-on: https://go-review.googlesource.com/c/go/+/322612
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2021-05-25 14:06:56 -07:00
parent 5c1e119d48
commit 6c9e1c58bc
2 changed files with 71 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
test/fixedbugs/issue10975.go
View File

@ -1,4 +1,4 @@
// errorcheck
// errorcheck -lang=go1.17
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style

109
test/run.go
View File

@ -43,6 +43,7 @@ var (
updateErrors = flag.Bool("update_errors", false, "update error messages in test file based on compiler output")
runoutputLimit = flag.Int("l", defaultRunOutputLimit(), "number of parallel runoutput tests to run")
generics = flag.String("G", "0,3", "a comma-separated list of -G compiler flags to test with")
force = flag.Bool("f", false, "run expected-failure generics tests rather than skipping them")
shard = flag.Int("shard", 0, "shard index to run. Only applicable if -shards is non-zero.")
shards = flag.Int("shards", 0, "number of shards. If 0, all tests are run. This is used by the continuous build.")
@ -518,7 +519,7 @@ func (t *test) run() {
close(t.donec)
}()
if t.glevel > 0 {
if t.glevel > 0 && !*force {
// Files excluded from generics testing.
filename := strings.Replace(t.goFileName(), "\\", "/", -1) // goFileName() uses \ on Windows
if excludedFiles[filename] {
@ -657,33 +658,37 @@ func (t *test) run() {
Compile
)
// checkFlags reports whether the current test configuration should
// be skipped because flags (which should be an arguments list for
// "go tool compile", not "go build") contains an excluded flag.
// It will also update flags as appropriate.
checkFlags := func(tool Tool) bool {
if t.glevel > 0 {
// validForGLevel reports whether the current test is valid to run
// at the specified -G level. If so, it may update flags as
// necessary to test with -G.
validForGLevel := func(tool Tool) bool {
if t.glevel == 0 {
// default -G level; always valid
return true
}
for _, flag := range flags {
if strings.Contains(flag, "-G") {
// test provides explicit -G flag already
if *verbose {
fmt.Printf("excl\t%s\n", t.goFileName())
}
return false
}
}
switch tool {
case Build, Run:
// ok; handled in goGcflags
case Compile:
for _, flag := range flags {
for _, pattern := range excludedFlags {
if strings.Contains(flag, pattern) {
if *verbose {
fmt.Printf("excl\t%s\t%s\n", t.goFileName(), flags)
}
return true // cannot handle flag
}
}
}
flags = append(flags, fmt.Sprintf("-G=%v", t.glevel))
default:
// we don't know how to add -G for this test yet
if *verbose {
fmt.Printf("excl\t%s\n", t.goFileName())
}
return false
}
@ -766,7 +771,7 @@ func (t *test) run() {
t.err = fmt.Errorf("unimplemented action %q", action)
case "asmcheck":
if !checkFlags(AsmCheck) {
if !validForGLevel(AsmCheck) {
return
}
@ -824,7 +829,7 @@ func (t *test) run() {
return
case "errorcheck":
if !checkFlags(Compile) {
if !validForGLevel(Compile) {
return
}
@ -858,7 +863,7 @@ func (t *test) run() {
t.err = t.errorCheck(string(out), wantAuto, long, t.gofile)
case "compile":
if !checkFlags(Compile) {
if !validForGLevel(Compile) {
return
}
@ -866,7 +871,7 @@ func (t *test) run() {
_, t.err = compileFile(runcmd, long, flags)
case "compiledir":
if !checkFlags(Compile) {
if !validForGLevel(Compile) {
return
}
@ -885,7 +890,7 @@ func (t *test) run() {
}
case "errorcheckdir", "errorcheckandrundir":
if !checkFlags(Compile) {
if !validForGLevel(Compile) {
return
}
@ -934,7 +939,7 @@ func (t *test) run() {
fallthrough
case "rundir":
if !checkFlags(Run) {
if !validForGLevel(Run) {
return
}
@ -996,7 +1001,7 @@ func (t *test) run() {
}
case "runindir":
if !checkFlags(Run) {
if !validForGLevel(Run) {
return
}
@ -1039,7 +1044,7 @@ func (t *test) run() {
t.checkExpectedOutput(out)
case "build":
if !checkFlags(Build) {
if !validForGLevel(Build) {
return
}
@ -1050,7 +1055,7 @@ func (t *test) run() {
}
case "builddir", "buildrundir":
if !checkFlags(Build) {
if !validForGLevel(Build) {
return
}
@ -1133,7 +1138,7 @@ func (t *test) run() {
}
case "buildrun":
if !checkFlags(Build) {
if !validForGLevel(Build) {
return
}
@ -1162,7 +1167,7 @@ func (t *test) run() {
t.checkExpectedOutput(out)
case "run":
if !checkFlags(Run) {
if !validForGLevel(Run) {
return
}
@ -1209,7 +1214,7 @@ func (t *test) run() {
t.checkExpectedOutput(out)
case "runoutput":
if !checkFlags(Run) {
if !validForGLevel(Run) {
return
}
@ -1248,7 +1253,7 @@ func (t *test) run() {
t.checkExpectedOutput(out)
case "errorcheckoutput":
if !checkFlags(Compile) {
if !validForGLevel(Compile) {
return
}
@ -2015,15 +2020,6 @@ func overlayDir(dstRoot, srcRoot string) error {
// checking are also excluded since these phases are not running yet.
// We can get rid of this code once types2 is fully plugged in.
// For now we skip tests when we can't handle the file or some of the flags.
// The first goal is to eliminate the excluded list; the second goal is to
// eliminate the flag list.
var excludedFlags = []string{
"-G", // skip redundant testing
"-m",
}
// List of files that the compiler cannot errorcheck with the new typechecker (compiler -G option).
// Temporary scaffolding until we pass all the tests at which point this map can be removed.
var excludedFiles = map[string]bool{
@ -2101,4 +2097,39 @@ var excludedFiles = map[string]bool{
"fixedbugs/issue7525e.go": true, // types2 reports init cycle error on different line - ok otherwise
"fixedbugs/issue7525.go": true, // types2 reports init cycle error on different line - ok otherwise
"fixedbugs/issue9691.go": true, // "cannot assign to int(.autotmp_4)" (probably irgen's fault)
// tests that rely on -m diagnostics, which currently differ with -G=3
//
// TODO(mdempsky): Triage, though most of the issues seem to fall into:
// - Anonymous result parameters given different names (e.g., ~r0 vs ~r1)
// - Some escape analysis diagnostics being printed without position information
// - Some expressions printed differently (e.g., "int(100)" instead
// of "100" or "&composite literal" instead of "&[4]int{...}").
"closure3.go": true,
"escape2.go": true,
"escape2n.go": true,
"escape4.go": true,
"escape5.go": true,
"escape_array.go": true,
"escape_calls.go": true,
"escape_field.go": true,
"escape_iface.go": true,
"escape_indir.go": true,
"escape_level.go": true,
"escape_map.go": true,
"escape_param.go": true,
"escape_slice.go": true,
"escape_struct_param1.go": true,
"escape_struct_param2.go": true,
"fixedbugs/issue12006.go": true,
"fixedbugs/issue13799.go": true,
"fixedbugs/issue21709.go": true,
"fixedbugs/issue24651a.go": true,
"fixedbugs/issue24651b.go": true,
"fixedbugs/issue27557.go": true,
"fixedbugs/issue31573.go": true,
"fixedbugs/issue37837.go": true,
"fixedbugs/issue39292.go": true,
"fixedbugs/issue7921.go": true,
"inline.go": true,
}