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go/packages: fix flaky TestJSON and reenable it on Go 1.10

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The fallback driver wasn't returning the roots in a
deterministic order because it was using sticking them in
a map and then iterating over that map to get each element.
Put them into a slice instead (and make a few small
associated changes) to preserve behavior.

Fixes golang/go#28040
Fixes golang/go#28609

Change-Id: Ib8f8c88d65b7a48b2b04ca91e2d3c316d5bb5803
Reviewed-on: https://go-review.googlesource.com/c/148880
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Michael Matloob 2018-11-09 16:24:45 -05:00 committed by Brad Fitzpatrick
parent 6d71ab8aad
commit 680468b755
2 changed files with 8 additions and 23 deletions
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18
go/packages/golist_fallback.go
View File

@ -46,7 +46,7 @@ func golistDriverFallback(cfg *Config, words ...string) (*driverResponse, error)
var response driverResponse
allPkgs := make(map[string]bool)
addPackage := func(p *jsonPackage) {
addPackage := func(p *jsonPackage, isRoot bool) {
id := p.ImportPath
if allPkgs[id] {
@ -54,7 +54,6 @@ func golistDriverFallback(cfg *Config, words ...string) (*driverResponse, error)
}
allPkgs[id] = true
isRoot := original[id] != nil
pkgpath := id
if pkgpath == "unsafe" {
@ -221,7 +220,7 @@ func golistDriverFallback(cfg *Config, words ...string) (*driverResponse, error)
}
for _, pkg := range original {
addPackage(pkg)
addPackage(pkg, true)
}
if cfg.Mode < LoadImports || len(deps) == 0 {
return &response, nil
@ -239,7 +238,7 @@ func golistDriverFallback(cfg *Config, words ...string) (*driverResponse, error)
return nil, fmt.Errorf("JSON decoding failed: %v", err)
}
addPackage(p)
addPackage(p, false)
}
for _, v := range needsTestVariant {
@ -356,14 +355,13 @@ func vendorlessPath(ipath string) string {
}
// getDeps runs an initial go list to determine all the dependency packages.
func getDeps(cfg *Config, words ...string) (originalSet map[string]*jsonPackage, deps []string, err error) {
func getDeps(cfg *Config, words ...string) (initial []*jsonPackage, deps []string, err error) {
buf, err := invokeGo(cfg, golistArgsFallback(cfg, words)...)
if err != nil {
return nil, nil, err
}
depsSet := make(map[string]bool)
originalSet = make(map[string]*jsonPackage)
var testImports []string
// Extract deps from the JSON.
@ -373,7 +371,7 @@ func getDeps(cfg *Config, words ...string) (originalSet map[string]*jsonPackage,
return nil, nil, fmt.Errorf("JSON decoding failed: %v", err)
}
originalSet[p.ImportPath] = p
initial = append(initial, p)
for _, dep := range p.Deps {
depsSet[dep] = true
}
@ -407,8 +405,8 @@ func getDeps(cfg *Config, words ...string) (originalSet map[string]*jsonPackage,
}
}
for orig := range originalSet {
delete(depsSet, orig)
for _, orig := range initial {
delete(depsSet, orig.ImportPath)
}
deps = make([]string, 0, len(depsSet))
@ -416,7 +414,7 @@ func getDeps(cfg *Config, words ...string) (originalSet map[string]*jsonPackage,
deps = append(deps, dep)
}
sort.Strings(deps) // ensure output is deterministic
return originalSet, deps, nil
return initial, deps, nil
}
func golistArgsFallback(cfg *Config, words []string) []string {

13
go/packages/packages_test.go
View File

@ -9,7 +9,6 @@ import (
"encoding/json"
"fmt"
"go/ast"
"go/build"
constantpkg "go/constant"
"go/parser"
"go/token"
@ -1222,9 +1221,6 @@ func TestName_ModulesDedup(t *testing.T) {
func TestJSON(t *testing.T) { packagestest.TestAll(t, testJSON) }
func testJSON(t *testing.T, exporter packagestest.Exporter) {
if !haveReleaseTag("go1.11") {
t.Skip("skipping; flaky before Go 1.11; https://golang.org/issue/28609")
}
//TODO: add in some errors
exported := packagestest.Export(t, exporter, []packagestest.Module{{
Name: "golang.org/fake",
@ -1637,12 +1633,3 @@ func constant(p *packages.Package, name string) *types.Const {
}
return c.(*types.Const)
}
func haveReleaseTag(tag string) bool {
for _, v := range build.Default.ReleaseTags {
if tag == v {
return true
}
}
return false
}