blob: 49a72306db13a882cb1dda01cd3ebd2a8b1255f3 [file] [log] [blame]
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package fetch
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"net/http/httptest"
"os"
"strings"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/google/safehtml/template"
"golang.org/x/mod/modfile"
"golang.org/x/pkgsite/internal"
"golang.org/x/pkgsite/internal/derrors"
"golang.org/x/pkgsite/internal/godoc"
"golang.org/x/pkgsite/internal/godoc/dochtml"
"golang.org/x/pkgsite/internal/licenses"
"golang.org/x/pkgsite/internal/proxy/proxytest"
"golang.org/x/pkgsite/internal/source"
"golang.org/x/pkgsite/internal/stdlib"
"golang.org/x/pkgsite/internal/testing/sample"
)
var testTimeout = 30 * time.Second
var (
templateFS = template.TrustedFSFromTrustedSource(template.TrustedSourceFromConstant("../../static"))
testModules []*proxytest.Module
)
type fetchFunc func(t *testing.T, withLicenseDetector bool, ctx context.Context, mod *proxytest.Module, fetchVersion string) (*FetchResult, *licenses.Detector)
func TestMain(m *testing.M) {
dochtml.LoadTemplates(templateFS)
testModules = proxytest.LoadTestModules("../proxy/testdata")
licenses.OmitExceptions = true
os.Exit(m.Run())
}
func TestFetchModule(t *testing.T) {
defer stdlib.WithTestData()()
// Stub out the function used to share playground snippets
origPost := httpPost
httpPost = func(url string, contentType string, body io.Reader) (resp *http.Response, err error) {
w := httptest.NewRecorder()
w.WriteHeader(http.StatusOK)
return w.Result(), nil
}
defer func() { httpPost = origPost }()
defer func(oldmax int) { godoc.MaxDocumentationHTML = oldmax }(godoc.MaxDocumentationHTML)
godoc.MaxDocumentationHTML = megabyte / 2
for _, test := range []struct {
name string
mod *testModule
fetchVersion string
proxyOnly bool
}{
{name: "single", mod: moduleOnePackage},
{name: "wasm", mod: moduleWasm},
{name: "no go.mod file", mod: moduleNoGoMod},
{name: "multi", mod: moduleMultiPackage},
{name: "bad packages", mod: moduleBadPackages},
{name: "build constraints", mod: moduleBuildConstraints},
{name: "bad build context", mod: moduleBadBuildContext},
{name: "packages with bad import paths", mod: moduleBadImportPath},
{name: "documentation", mod: moduleDocTest},
{name: "documentation too large", mod: moduleDocTooLarge},
{name: "package-level example", mod: modulePackageExample},
{name: "function example", mod: moduleFuncExample},
{name: "type example", mod: moduleTypeExample},
{name: "method example", mod: moduleMethodExample},
{name: "nonredistributable packages", mod: moduleNonRedist},
{name: "generics", mod: moduleGenerics},
// Proxy only as stdlib is not accounted for in local mode
{name: "stdlib module", mod: moduleStd, proxyOnly: true},
// Proxy only as version is pre specified in local mode
{name: "master version of stdlib module", mod: moduleStdMaster, fetchVersion: "master", proxyOnly: true},
// Proxy only as version is pre specified in local mode
{name: "master version of module", mod: moduleMaster, fetchVersion: "master", proxyOnly: true},
// Proxy only as version is pre specified in local mode
{name: "latest version of module", mod: moduleLatest, fetchVersion: "latest", proxyOnly: true},
} {
t.Run(test.name, func(t *testing.T) {
mod := test.mod.mod
if mod == nil {
mod = test.mod.modfunc()
}
if mod == nil {
t.Fatal("nil module")
}
test.mod.fr = cleanFetchResult(t, test.mod.fr)
for _, fetcher := range []struct {
name string
fetch fetchFunc
}{
{name: "proxy", fetch: proxyFetcher},
{name: "local", fetch: localFetcher},
} {
if test.proxyOnly && fetcher.name == "local" {
continue
}
t.Run(fetcher.name, func(t *testing.T) {
ctx := context.Background()
ctx, cancel := context.WithTimeout(ctx, 300*time.Second)
defer cancel()
got, d := fetcher.fetch(t, true, ctx, mod, test.fetchVersion)
if got.Error != nil {
t.Fatalf("fetching failed: %v", got.Error)
}
test.mod.fr = cleanLicenses(t, test.mod.fr, d)
fr := updateFetchResultVersions(t, test.mod.fr, fetcher.name == "local")
sortFetchResult(fr)
sortFetchResult(got)
opts := []cmp.Option{
cmpopts.IgnoreFields(internal.Documentation{}, "Source"),
cmpopts.IgnoreFields(internal.PackageVersionState{}, "Error"),
cmp.AllowUnexported(source.Info{}),
cmpopts.EquateEmpty(),
}
if fetcher.name == "local" {
opts = append(opts,
[]cmp.Option{
// Pre specified for all modules
cmpopts.IgnoreFields(internal.ModuleInfo{}, "SourceInfo", "CommitTime"),
cmpopts.IgnoreFields(internal.Module{}, "Version"),
cmpopts.IgnoreFields(FetchResult{}, "RequestedVersion"),
cmpopts.IgnoreFields(FetchResult{}, "ResolvedVersion"),
}...)
}
opts = append(opts, sample.LicenseCmpOpts...)
if diff := cmp.Diff(fr, got, opts...); diff != "" {
t.Fatalf("mismatch (-want +got):\n%s", diff)
}
validateDocumentationHTML(t, got.Module, test.mod.docStrings)
})
}
})
}
}
// validateDocumentationHTML checks that the doc HTMLs for units in the module
// contain a set of substrings.
func validateDocumentationHTML(t *testing.T, got *internal.Module, want map[string][]string) {
ctx := context.Background()
for _, u := range got.Units {
if wantStrings := want[u.Path]; wantStrings != nil {
parts, err := godoc.RenderFromUnit(ctx, u, internal.BuildContext{})
if err != nil && !errors.Is(err, godoc.ErrTooLarge) {
t.Fatal(err)
}
gotDoc := parts.Body.String()
for _, w := range wantStrings {
if !strings.Contains(gotDoc, w) {
t.Errorf("doc for %s:\nmissing %q; got\n%q", u.Path, w, gotDoc)
}
}
}
}
}
func TestFetchModule_Errors(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
defer cancel()
for _, test := range []struct {
name string
mod *testModule
wantErr error
wantGoModPath string
wantHasGoMod bool
}{
{
name: "alternative",
mod: moduleAlternative,
wantErr: derrors.AlternativeModule,
wantGoModPath: "canonical",
wantHasGoMod: true,
},
{
name: "empty module",
mod: moduleEmpty,
wantErr: derrors.BadModule,
wantGoModPath: "emp.ty/module",
wantHasGoMod: false,
},
{
name: "go.mod but no go files",
mod: moduleNoGo,
wantErr: derrors.BadModule,
wantGoModPath: "no.go/files",
wantHasGoMod: true,
},
} {
for _, fetcher := range []struct {
name string
fetch fetchFunc
}{
{name: "proxy", fetch: proxyFetcher},
{name: "local", fetch: localFetcher},
} {
t.Run(fmt.Sprintf("%s:%s", fetcher.name, test.name), func(t *testing.T) {
got, _ := fetcher.fetch(t, false, ctx, test.mod.mod, "")
if !errors.Is(got.Error, test.wantErr) {
t.Fatalf("got error = %v; wantErr = %v)", got.Error, test.wantErr)
}
if got == nil {
t.Fatal("got nil")
}
if g, w := got.GoModPath, test.wantGoModPath; g != w {
t.Errorf("GoModPath: got %q, want %q", g, w)
}
if g, w := got.HasGoMod, test.wantHasGoMod; g != w {
t.Errorf("HasGoMod: got %t, want %t", g, w)
}
})
}
}
}
func TestExtractDeprecatedComment(t *testing.T) {
for _, test := range []struct {
name string
in string
wantHas bool
wantComment string
}{
{"no comment", `module m`, false, ""},
{"valid comment",
`
// Deprecated: use v2
module m
`, true, "use v2"},
{"take first",
`
// Deprecated: use v2
// Deprecated: use v3
module m
`, true, "use v2"},
{"ignore others",
`
// c1
// Deprecated: use v2
// c2
module m
`, true, "use v2"},
{"must be capitalized",
`
// c1
// deprecated: use v2
// c2
module m
`, false, ""},
{"suffix",
`
// c1
module m // Deprecated: use v2
`, true, "use v2",
},
} {
mf, err := modfile.Parse("test", []byte(test.in), nil)
if err != nil {
t.Fatal(err)
}
gotHas, gotComment := extractDeprecatedComment(mf)
if gotHas != test.wantHas || gotComment != test.wantComment {
t.Errorf("%s: got (%t, %q), want(%t, %q)", test.name, gotHas, gotComment, test.wantHas, test.wantComment)
}
}
}