blob: cae4af25ad0a2e3d8055167cc02632324a4bbf4f [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 tests exports functionality to be used across a variety of gopls tests.
package tests
import (
"bytes"
"context"
"flag"
"fmt"
"go/ast"
"go/token"
"io"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"sort"
"strconv"
"strings"
"sync"
"testing"
"time"
"golang.org/x/tools/go/expect"
"golang.org/x/tools/go/packages"
"golang.org/x/tools/go/packages/packagestest"
"golang.org/x/tools/gopls/internal/lsp/command"
"golang.org/x/tools/gopls/internal/lsp/protocol"
"golang.org/x/tools/gopls/internal/lsp/source"
"golang.org/x/tools/gopls/internal/lsp/source/completion"
"golang.org/x/tools/gopls/internal/lsp/tests/compare"
"golang.org/x/tools/internal/span"
"golang.org/x/tools/internal/testenv"
"golang.org/x/tools/internal/typeparams"
"golang.org/x/tools/txtar"
)
const (
overlayFileSuffix = ".overlay"
goldenFileSuffix = ".golden"
inFileSuffix = ".in"
// The module path containing the testdata packages.
//
// Warning: the length of this module path matters, as we have bumped up
// against command-line limitations on windows (golang/go#54800).
testModule = "golang.org/lsptests"
)
var summaryFile = "summary.txt"
func init() {
if typeparams.Enabled {
summaryFile = "summary_go1.18.txt"
}
}
var UpdateGolden = flag.Bool("golden", false, "Update golden files")
// These type names apparently avoid the need to repeat the
// type in the field name and the make() expression.
type CallHierarchy = map[span.Span]*CallHierarchyResult
type CodeLens = map[span.URI][]protocol.CodeLens
type Diagnostics = map[span.URI][]*source.Diagnostic
type CompletionItems = map[token.Pos]*completion.CompletionItem
type Completions = map[span.Span][]Completion
type CompletionSnippets = map[span.Span][]CompletionSnippet
type UnimportedCompletions = map[span.Span][]Completion
type DeepCompletions = map[span.Span][]Completion
type FuzzyCompletions = map[span.Span][]Completion
type CaseSensitiveCompletions = map[span.Span][]Completion
type RankCompletions = map[span.Span][]Completion
type FoldingRanges = []span.Span
type Formats = []span.Span
type Imports = []span.Span
type SemanticTokens = []span.Span
type SuggestedFixes = map[span.Span][]SuggestedFix
type FunctionExtractions = map[span.Span]span.Span
type MethodExtractions = map[span.Span]span.Span
type Definitions = map[span.Span]Definition
type Implementations = map[span.Span][]span.Span
type Highlights = map[span.Span][]span.Span
type References = map[span.Span][]span.Span
type Renames = map[span.Span]string
type PrepareRenames = map[span.Span]*source.PrepareItem
type Symbols = map[span.URI][]*symbol
type SymbolInformation = map[span.Span]protocol.SymbolInformation
type InlayHints = []span.Span
type WorkspaceSymbols = map[WorkspaceSymbolsTestType]map[span.URI][]string
type Signatures = map[span.Span]*protocol.SignatureHelp
type Links = map[span.URI][]Link
type AddImport = map[span.URI]string
type Hovers = map[span.Span]string
type Data struct {
Config packages.Config
Exported *packagestest.Exported
CallHierarchy CallHierarchy
CodeLens CodeLens
Diagnostics Diagnostics
CompletionItems CompletionItems
Completions Completions
CompletionSnippets CompletionSnippets
UnimportedCompletions UnimportedCompletions
DeepCompletions DeepCompletions
FuzzyCompletions FuzzyCompletions
CaseSensitiveCompletions CaseSensitiveCompletions
RankCompletions RankCompletions
FoldingRanges FoldingRanges
Formats Formats
Imports Imports
SemanticTokens SemanticTokens
SuggestedFixes SuggestedFixes
FunctionExtractions FunctionExtractions
MethodExtractions MethodExtractions
Definitions Definitions
Implementations Implementations
Highlights Highlights
References References
Renames Renames
InlayHints InlayHints
PrepareRenames PrepareRenames
Symbols Symbols
WorkspaceSymbols WorkspaceSymbols
Signatures Signatures
Links Links
AddImport AddImport
Hovers Hovers
t testing.TB
fragments map[string]string
dir string
golden map[string]*Golden
mode string
ModfileFlagAvailable bool
mappersMu sync.Mutex
mappers map[span.URI]*protocol.ColumnMapper
}
// TODO(adonovan): there are multiple implementations of this (undocumented)
// interface, each of which must implement similar semantics. For example:
// - *runner in ../cmd/test/check.go
// - *runner in ../source/source_test.go
// - *runner in ../lsp_test.go
// Can we avoid this duplication?
type Tests interface {
CallHierarchy(*testing.T, span.Span, *CallHierarchyResult)
CodeLens(*testing.T, span.URI, []protocol.CodeLens)
Diagnostics(*testing.T, span.URI, []*source.Diagnostic)
Completion(*testing.T, span.Span, Completion, CompletionItems)
CompletionSnippet(*testing.T, span.Span, CompletionSnippet, bool, CompletionItems)
UnimportedCompletion(*testing.T, span.Span, Completion, CompletionItems)
DeepCompletion(*testing.T, span.Span, Completion, CompletionItems)
FuzzyCompletion(*testing.T, span.Span, Completion, CompletionItems)
CaseSensitiveCompletion(*testing.T, span.Span, Completion, CompletionItems)
RankCompletion(*testing.T, span.Span, Completion, CompletionItems)
FoldingRanges(*testing.T, span.Span)
Format(*testing.T, span.Span)
Import(*testing.T, span.Span)
SemanticTokens(*testing.T, span.Span)
SuggestedFix(*testing.T, span.Span, []SuggestedFix, int)
FunctionExtraction(*testing.T, span.Span, span.Span)
MethodExtraction(*testing.T, span.Span, span.Span)
Definition(*testing.T, span.Span, Definition)
Implementation(*testing.T, span.Span, []span.Span)
Highlight(*testing.T, span.Span, []span.Span)
InlayHints(*testing.T, span.Span)
References(*testing.T, span.Span, []span.Span)
Rename(*testing.T, span.Span, string)
PrepareRename(*testing.T, span.Span, *source.PrepareItem)
Symbols(*testing.T, span.URI, []protocol.DocumentSymbol)
WorkspaceSymbols(*testing.T, span.URI, string, WorkspaceSymbolsTestType)
SignatureHelp(*testing.T, span.Span, *protocol.SignatureHelp)
Link(*testing.T, span.URI, []Link)
AddImport(*testing.T, span.URI, string)
Hover(*testing.T, span.Span, string)
}
type Definition struct {
Name string
IsType bool
OnlyHover bool
Src, Def span.Span
}
type CompletionTestType int
const (
// Default runs the standard completion tests.
CompletionDefault = CompletionTestType(iota)
// Unimported tests the autocompletion of unimported packages.
CompletionUnimported
// Deep tests deep completion.
CompletionDeep
// Fuzzy tests deep completion and fuzzy matching.
CompletionFuzzy
// CaseSensitive tests case sensitive completion.
CompletionCaseSensitive
// CompletionRank candidates in test must be valid and in the right relative order.
CompletionRank
)
type WorkspaceSymbolsTestType int
const (
// Default runs the standard workspace symbols tests.
WorkspaceSymbolsDefault = WorkspaceSymbolsTestType(iota)
// Fuzzy tests workspace symbols with fuzzy matching.
WorkspaceSymbolsFuzzy
// CaseSensitive tests workspace symbols with case sensitive.
WorkspaceSymbolsCaseSensitive
)
type Completion struct {
CompletionItems []token.Pos
}
type CompletionSnippet struct {
CompletionItem token.Pos
PlainSnippet string
PlaceholderSnippet string
}
type CallHierarchyResult struct {
IncomingCalls, OutgoingCalls []protocol.CallHierarchyItem
}
type Link struct {
Src span.Span
Target string
NotePosition token.Position
}
type SuggestedFix struct {
ActionKind, Title string
}
// A symbol holds a DocumentSymbol along with its parent-child edge.
type symbol struct {
pSymbol protocol.DocumentSymbol
id, parentID string
}
type Golden struct {
Filename string
Archive *txtar.Archive
Modified bool
}
func Context(t testing.TB) context.Context {
return context.Background()
}
func DefaultOptions(o *source.Options) {
o.SupportedCodeActions = map[source.FileKind]map[protocol.CodeActionKind]bool{
source.Go: {
protocol.SourceOrganizeImports: true,
protocol.QuickFix: true,
protocol.RefactorRewrite: true,
protocol.RefactorExtract: true,
protocol.SourceFixAll: true,
},
source.Mod: {
protocol.SourceOrganizeImports: true,
},
source.Sum: {},
source.Work: {},
source.Tmpl: {},
}
o.UserOptions.Codelenses[string(command.Test)] = true
o.HoverKind = source.SynopsisDocumentation
o.InsertTextFormat = protocol.SnippetTextFormat
o.CompletionBudget = time.Minute
o.HierarchicalDocumentSymbolSupport = true
o.ExperimentalWorkspaceModule = true
o.SemanticTokens = true
o.InternalOptions.NewDiff = "both"
}
func RunTests(t *testing.T, dataDir string, includeMultiModule bool, f func(*testing.T, *Data)) {
t.Helper()
modes := []string{"Modules", "GOPATH"}
if includeMultiModule {
modes = append(modes, "MultiModule")
}
for _, mode := range modes {
t.Run(mode, func(t *testing.T) {
if mode == "MultiModule" {
// Some bug in 1.12 breaks reading markers, and it's not worth figuring out.
testenv.NeedsGo1Point(t, 13)
}
datum := load(t, mode, dataDir)
t.Helper()
f(t, datum)
})
}
}
func load(t testing.TB, mode string, dir string) *Data {
datum := &Data{
CallHierarchy: make(CallHierarchy),
CodeLens: make(CodeLens),
Diagnostics: make(Diagnostics),
CompletionItems: make(CompletionItems),
Completions: make(Completions),
CompletionSnippets: make(CompletionSnippets),
UnimportedCompletions: make(UnimportedCompletions),
DeepCompletions: make(DeepCompletions),
FuzzyCompletions: make(FuzzyCompletions),
RankCompletions: make(RankCompletions),
CaseSensitiveCompletions: make(CaseSensitiveCompletions),
Definitions: make(Definitions),
Implementations: make(Implementations),
Highlights: make(Highlights),
References: make(References),
Renames: make(Renames),
PrepareRenames: make(PrepareRenames),
SuggestedFixes: make(SuggestedFixes),
FunctionExtractions: make(FunctionExtractions),
MethodExtractions: make(MethodExtractions),
Symbols: make(Symbols),
WorkspaceSymbols: make(WorkspaceSymbols),
Signatures: make(Signatures),
Links: make(Links),
AddImport: make(AddImport),
Hovers: make(Hovers),
t: t,
dir: dir,
fragments: map[string]string{},
golden: map[string]*Golden{},
mode: mode,
mappers: map[span.URI]*protocol.ColumnMapper{},
}
if !*UpdateGolden {
summary := filepath.Join(filepath.FromSlash(dir), summaryFile+goldenFileSuffix)
if _, err := os.Stat(summary); os.IsNotExist(err) {
t.Fatalf("could not find golden file summary.txt in %#v", dir)
}
archive, err := txtar.ParseFile(summary)
if err != nil {
t.Fatalf("could not read golden file %v/%v: %v", dir, summary, err)
}
datum.golden[summaryFile] = &Golden{
Filename: summary,
Archive: archive,
}
}
files := packagestest.MustCopyFileTree(dir)
// Prune test cases that exercise generics.
if !typeparams.Enabled {
for name := range files {
if strings.Contains(name, "_generics") {
delete(files, name)
}
}
}
overlays := map[string][]byte{}
for fragment, operation := range files {
if trimmed := strings.TrimSuffix(fragment, goldenFileSuffix); trimmed != fragment {
delete(files, fragment)
goldFile := filepath.Join(dir, fragment)
archive, err := txtar.ParseFile(goldFile)
if err != nil {
t.Fatalf("could not read golden file %v: %v", fragment, err)
}
datum.golden[trimmed] = &Golden{
Filename: goldFile,
Archive: archive,
}
} else if trimmed := strings.TrimSuffix(fragment, inFileSuffix); trimmed != fragment {
delete(files, fragment)
files[trimmed] = operation
} else if index := strings.Index(fragment, overlayFileSuffix); index >= 0 {
delete(files, fragment)
partial := fragment[:index] + fragment[index+len(overlayFileSuffix):]
contents, err := ioutil.ReadFile(filepath.Join(dir, fragment))
if err != nil {
t.Fatal(err)
}
overlays[partial] = contents
}
}
modules := []packagestest.Module{
{
Name: testModule,
Files: files,
Overlay: overlays,
},
}
switch mode {
case "Modules":
datum.Exported = packagestest.Export(t, packagestest.Modules, modules)
case "GOPATH":
datum.Exported = packagestest.Export(t, packagestest.GOPATH, modules)
case "MultiModule":
files := map[string]interface{}{}
for k, v := range modules[0].Files {
files[filepath.Join("testmodule", k)] = v
}
modules[0].Files = files
overlays := map[string][]byte{}
for k, v := range modules[0].Overlay {
overlays[filepath.Join("testmodule", k)] = v
}
modules[0].Overlay = overlays
golden := map[string]*Golden{}
for k, v := range datum.golden {
if k == summaryFile {
golden[k] = v
} else {
golden[filepath.Join("testmodule", k)] = v
}
}
datum.golden = golden
datum.Exported = packagestest.Export(t, packagestest.Modules, modules)
default:
panic("unknown mode " + mode)
}
for _, m := range modules {
for fragment := range m.Files {
filename := datum.Exported.File(m.Name, fragment)
datum.fragments[filename] = fragment
}
}
// Turn off go/packages debug logging.
datum.Exported.Config.Logf = nil
datum.Config.Logf = nil
// Merge the exported.Config with the view.Config.
datum.Config = *datum.Exported.Config
datum.Config.Fset = token.NewFileSet()
datum.Config.Context = Context(nil)
datum.Config.ParseFile = func(fset *token.FileSet, filename string, src []byte) (*ast.File, error) {
panic("ParseFile should not be called")
}
// Do a first pass to collect special markers for completion and workspace symbols.
if err := datum.Exported.Expect(map[string]interface{}{
"item": func(name string, r packagestest.Range, _ []string) {
datum.Exported.Mark(name, r)
},
"symbol": func(name string, r packagestest.Range, _ []string) {
datum.Exported.Mark(name, r)
},
}); err != nil {
t.Fatal(err)
}
// Collect any data that needs to be used by subsequent tests.
if err := datum.Exported.Expect(map[string]interface{}{
"codelens": datum.collectCodeLens,
"diag": datum.collectDiagnostics,
"item": datum.collectCompletionItems,
"complete": datum.collectCompletions(CompletionDefault),
"unimported": datum.collectCompletions(CompletionUnimported),
"deep": datum.collectCompletions(CompletionDeep),
"fuzzy": datum.collectCompletions(CompletionFuzzy),
"casesensitive": datum.collectCompletions(CompletionCaseSensitive),
"rank": datum.collectCompletions(CompletionRank),
"snippet": datum.collectCompletionSnippets,
"fold": datum.collectFoldingRanges,
"format": datum.collectFormats,
"import": datum.collectImports,
"semantic": datum.collectSemanticTokens,
"godef": datum.collectDefinitions,
"implementations": datum.collectImplementations,
"typdef": datum.collectTypeDefinitions,
"hoverdef": datum.collectHoverDefinitions,
"hover": datum.collectHovers,
"highlight": datum.collectHighlights,
"inlayHint": datum.collectInlayHints,
"refs": datum.collectReferences,
"rename": datum.collectRenames,
"prepare": datum.collectPrepareRenames,
"symbol": datum.collectSymbols,
"signature": datum.collectSignatures,
"link": datum.collectLinks,
"suggestedfix": datum.collectSuggestedFixes,
"extractfunc": datum.collectFunctionExtractions,
"extractmethod": datum.collectMethodExtractions,
"incomingcalls": datum.collectIncomingCalls,
"outgoingcalls": datum.collectOutgoingCalls,
"addimport": datum.collectAddImports,
}); err != nil {
t.Fatal(err)
}
// Collect names for the entries that require golden files.
if err := datum.Exported.Expect(map[string]interface{}{
"godef": datum.collectDefinitionNames,
"hoverdef": datum.collectDefinitionNames,
"workspacesymbol": datum.collectWorkspaceSymbols(WorkspaceSymbolsDefault),
"workspacesymbolfuzzy": datum.collectWorkspaceSymbols(WorkspaceSymbolsFuzzy),
"workspacesymbolcasesensitive": datum.collectWorkspaceSymbols(WorkspaceSymbolsCaseSensitive),
}); err != nil {
t.Fatal(err)
}
if mode == "MultiModule" {
if err := moveFile(filepath.Join(datum.Config.Dir, "go.mod"), filepath.Join(datum.Config.Dir, "testmodule/go.mod")); err != nil {
t.Fatal(err)
}
}
return datum
}
// moveFile moves the file at oldpath to newpath, by renaming if possible
// or copying otherwise.
func moveFile(oldpath, newpath string) (err error) {
renameErr := os.Rename(oldpath, newpath)
if renameErr == nil {
return nil
}
src, err := os.Open(oldpath)
if err != nil {
return err
}
defer func() {
src.Close()
if err == nil {
err = os.Remove(oldpath)
}
}()
perm := os.ModePerm
fi, err := src.Stat()
if err == nil {
perm = fi.Mode().Perm()
}
dst, err := os.OpenFile(newpath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
if err != nil {
return err
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
return err
}
func Run(t *testing.T, tests Tests, data *Data) {
t.Helper()
checkData(t, data)
eachCompletion := func(t *testing.T, cases map[span.Span][]Completion, test func(*testing.T, span.Span, Completion, CompletionItems)) {
t.Helper()
for src, exp := range cases {
for i, e := range exp {
t.Run(SpanName(src)+"_"+strconv.Itoa(i), func(t *testing.T) {
t.Helper()
if strings.Contains(t.Name(), "cgo") {
testenv.NeedsTool(t, "cgo")
}
if strings.Contains(t.Name(), "declarecgo") {
testenv.NeedsGo1Point(t, 15)
}
test(t, src, e, data.CompletionItems)
})
}
}
}
t.Run("CallHierarchy", func(t *testing.T) {
t.Helper()
for spn, callHierarchyResult := range data.CallHierarchy {
t.Run(SpanName(spn), func(t *testing.T) {
t.Helper()
tests.CallHierarchy(t, spn, callHierarchyResult)
})
}
})
t.Run("Completion", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.Completions, tests.Completion)
})
t.Run("CompletionSnippets", func(t *testing.T) {
t.Helper()
for _, placeholders := range []bool{true, false} {
for src, expecteds := range data.CompletionSnippets {
for i, expected := range expecteds {
name := SpanName(src) + "_" + strconv.Itoa(i+1)
if placeholders {
name += "_placeholders"
}
t.Run(name, func(t *testing.T) {
t.Helper()
tests.CompletionSnippet(t, src, expected, placeholders, data.CompletionItems)
})
}
}
}
})
t.Run("UnimportedCompletion", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.UnimportedCompletions, tests.UnimportedCompletion)
})
t.Run("DeepCompletion", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.DeepCompletions, tests.DeepCompletion)
})
t.Run("FuzzyCompletion", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.FuzzyCompletions, tests.FuzzyCompletion)
})
t.Run("CaseSensitiveCompletion", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.CaseSensitiveCompletions, tests.CaseSensitiveCompletion)
})
t.Run("RankCompletions", func(t *testing.T) {
t.Helper()
eachCompletion(t, data.RankCompletions, tests.RankCompletion)
})
t.Run("CodeLens", func(t *testing.T) {
t.Helper()
for uri, want := range data.CodeLens {
// Check if we should skip this URI if the -modfile flag is not available.
if shouldSkip(data, uri) {
continue
}
t.Run(uriName(uri), func(t *testing.T) {
t.Helper()
tests.CodeLens(t, uri, want)
})
}
})
t.Run("Diagnostics", func(t *testing.T) {
t.Helper()
for uri, want := range data.Diagnostics {
// Check if we should skip this URI if the -modfile flag is not available.
if shouldSkip(data, uri) {
continue
}
t.Run(uriName(uri), func(t *testing.T) {
t.Helper()
tests.Diagnostics(t, uri, want)
})
}
})
t.Run("FoldingRange", func(t *testing.T) {
t.Helper()
for _, spn := range data.FoldingRanges {
t.Run(uriName(spn.URI()), func(t *testing.T) {
t.Helper()
tests.FoldingRanges(t, spn)
})
}
})
t.Run("Format", func(t *testing.T) {
t.Helper()
for _, spn := range data.Formats {
t.Run(uriName(spn.URI()), func(t *testing.T) {
t.Helper()
tests.Format(t, spn)
})
}
})
t.Run("Import", func(t *testing.T) {
t.Helper()
for _, spn := range data.Imports {
t.Run(uriName(spn.URI()), func(t *testing.T) {
t.Helper()
tests.Import(t, spn)
})
}
})
t.Run("SemanticTokens", func(t *testing.T) {
t.Helper()
for _, spn := range data.SemanticTokens {
t.Run(uriName(spn.URI()), func(t *testing.T) {
t.Helper()
tests.SemanticTokens(t, spn)
})
}
})
t.Run("SuggestedFix", func(t *testing.T) {
t.Helper()
for spn, actionKinds := range data.SuggestedFixes {
// Check if we should skip this spn if the -modfile flag is not available.
if shouldSkip(data, spn.URI()) {
continue
}
t.Run(SpanName(spn), func(t *testing.T) {
t.Helper()
tests.SuggestedFix(t, spn, actionKinds, 1)
})
}
})
t.Run("FunctionExtraction", func(t *testing.T) {
t.Helper()
for start, end := range data.FunctionExtractions {
// Check if we should skip this spn if the -modfile flag is not available.
if shouldSkip(data, start.URI()) {
continue
}
t.Run(SpanName(start), func(t *testing.T) {
t.Helper()
tests.FunctionExtraction(t, start, end)
})
}
})
t.Run("MethodExtraction", func(t *testing.T) {
t.Helper()
for start, end := range data.MethodExtractions {
// Check if we should skip this spn if the -modfile flag is not available.
if shouldSkip(data, start.URI()) {
continue
}
t.Run(SpanName(start), func(t *testing.T) {
t.Helper()
tests.MethodExtraction(t, start, end)
})
}
})
t.Run("Definition", func(t *testing.T) {
t.Helper()
for spn, d := range data.Definitions {
t.Run(SpanName(spn), func(t *testing.T) {
t.Helper()
if strings.Contains(t.Name(), "cgo") {
testenv.NeedsTool(t, "cgo")
}
if strings.Contains(t.Name(), "declarecgo") {
testenv.NeedsGo1Point(t, 15)
}
tests.Definition(t, spn, d)
})
}
})
t.Run("Implementation", func(t *testing.T) {
t.Helper()
for spn, m := range data.Implementations {
t.Run(SpanName(spn), func(t *testing.T) {
t.Helper()
tests.Implementation(t, spn, m)
})
}
})
t.Run("Highlight", func(t *testing.T) {
t.Helper()
for pos, locations := range data.Highlights {
t.Run(SpanName(pos), func(t *testing.T) {
t.Helper()
tests.Highlight(t, pos, locations)
})
}
})
t.Run("Hover", func(t *testing.T) {
t.Helper()
for pos, info := range data.Hovers {
t.Run(SpanName(pos), func(t *testing.T) {
t.Helper()
tests.Hover(t, pos, info)
})
}
})
t.Run("InlayHints", func(t *testing.T) {
t.Helper()
for _, src := range data.InlayHints {
t.Run(SpanName(src), func(t *testing.T) {
t.Helper()
tests.InlayHints(t, src)
})
}
})
t.Run("References", func(t *testing.T) {
t.Helper()
for src, itemList := range data.References {
t.Run(SpanName(src), func(t *testing.T) {
t.Helper()
tests.References(t, src, itemList)
})
}
})
t.Run("Renames", func(t *testing.T) {
t.Helper()
for spn, newText := range data.Renames {
t.Run(uriName(spn.URI())+"_"+newText, func(t *testing.T) {
t.Helper()
tests.Rename(t, spn, newText)
})
}
})
t.Run("PrepareRenames", func(t *testing.T) {
t.Helper()
for src, want := range data.PrepareRenames {
t.Run(SpanName(src), func(t *testing.T) {
t.Helper()
tests.PrepareRename(t, src, want)
})
}
})
t.Run("Symbols", func(t *testing.T) {
t.Helper()
for uri, allSymbols := range data.Symbols {
byParent := make(map[string][]*symbol)
for _, sym := range allSymbols {
if sym.parentID != "" {
byParent[sym.parentID] = append(byParent[sym.parentID], sym)
}
}
// collectChildren does a depth-first traversal of the symbol tree,
// computing children of child nodes before returning to their parent.
// This is necessary as the Children field is slice of non-pointer types,
// and therefore we need to be careful to mutate children first before
// assigning them to their parent.
var collectChildren func(id string) []protocol.DocumentSymbol
collectChildren = func(id string) []protocol.DocumentSymbol {
children := byParent[id]
// delete from byParent before recursing, to ensure that
// collectChildren terminates even in the presence of cycles.
delete(byParent, id)
var result []protocol.DocumentSymbol
for _, child := range children {
child.pSymbol.Children = collectChildren(child.id)
result = append(result, child.pSymbol)
}
return result
}
var topLevel []protocol.DocumentSymbol
for _, sym := range allSymbols {
if sym.parentID == "" {
sym.pSymbol.Children = collectChildren(sym.id)
topLevel = append(topLevel, sym.pSymbol)
}
}
t.Run(uriName(uri), func(t *testing.T) {
t.Helper()
tests.Symbols(t, uri, topLevel)
})
}
})
t.Run("WorkspaceSymbols", func(t *testing.T) {
t.Helper()
for _, typ := range []WorkspaceSymbolsTestType{
WorkspaceSymbolsDefault,
WorkspaceSymbolsCaseSensitive,
WorkspaceSymbolsFuzzy,
} {
for uri, cases := range data.WorkspaceSymbols[typ] {
for _, query := range cases {
name := query
if name == "" {
name = "EmptyQuery"
}
t.Run(name, func(t *testing.T) {
t.Helper()
tests.WorkspaceSymbols(t, uri, query, typ)
})
}
}
}
})
t.Run("SignatureHelp", func(t *testing.T) {
t.Helper()
for spn, expectedSignature := range data.Signatures {
t.Run(SpanName(spn), func(t *testing.T) {
t.Helper()
tests.SignatureHelp(t, spn, expectedSignature)
})
}
})
t.Run("Link", func(t *testing.T) {
t.Helper()
for uri, wantLinks := range data.Links {
// If we are testing GOPATH, then we do not want links with the versions
// attached (pkg.go.dev/repoa/moda@v1.1.0/pkg), unless the file is a
// go.mod, then we can skip it altogether.
if data.Exported.Exporter == packagestest.GOPATH {
if strings.HasSuffix(uri.Filename(), ".mod") {
continue
}
re := regexp.MustCompile(`@v\d+\.\d+\.[\w-]+`)
for i, link := range wantLinks {
wantLinks[i].Target = re.ReplaceAllString(link.Target, "")
}
}
t.Run(uriName(uri), func(t *testing.T) {
t.Helper()
tests.Link(t, uri, wantLinks)
})
}
})
t.Run("AddImport", func(t *testing.T) {
t.Helper()
for uri, exp := range data.AddImport {
t.Run(uriName(uri), func(t *testing.T) {
tests.AddImport(t, uri, exp)
})
}
})
if *UpdateGolden {
for _, golden := range data.golden {
if !golden.Modified {
continue
}
sort.Slice(golden.Archive.Files, func(i, j int) bool {
return golden.Archive.Files[i].Name < golden.Archive.Files[j].Name
})
if err := ioutil.WriteFile(golden.Filename, txtar.Format(golden.Archive), 0666); err != nil {
t.Fatal(err)
}
}
}
}
func checkData(t *testing.T, data *Data) {
buf := &bytes.Buffer{}
diagnosticsCount := 0
for _, want := range data.Diagnostics {
diagnosticsCount += len(want)
}
linksCount := 0
for _, want := range data.Links {
linksCount += len(want)
}
definitionCount := 0
typeDefinitionCount := 0
for _, d := range data.Definitions {
if d.IsType {
typeDefinitionCount++
} else {
definitionCount++
}
}
snippetCount := 0
for _, want := range data.CompletionSnippets {
snippetCount += len(want)
}
countCompletions := func(c map[span.Span][]Completion) (count int) {
for _, want := range c {
count += len(want)
}
return count
}
countCodeLens := func(c map[span.URI][]protocol.CodeLens) (count int) {
for _, want := range c {
count += len(want)
}
return count
}
countWorkspaceSymbols := func(c map[WorkspaceSymbolsTestType]map[span.URI][]string) (count int) {
for _, typs := range c {
for _, queries := range typs {
count += len(queries)
}
}
return count
}
fmt.Fprintf(buf, "CallHierarchyCount = %v\n", len(data.CallHierarchy))
fmt.Fprintf(buf, "CodeLensCount = %v\n", countCodeLens(data.CodeLens))
fmt.Fprintf(buf, "CompletionsCount = %v\n", countCompletions(data.Completions))
fmt.Fprintf(buf, "CompletionSnippetCount = %v\n", snippetCount)
fmt.Fprintf(buf, "UnimportedCompletionsCount = %v\n", countCompletions(data.UnimportedCompletions))
fmt.Fprintf(buf, "DeepCompletionsCount = %v\n", countCompletions(data.DeepCompletions))
fmt.Fprintf(buf, "FuzzyCompletionsCount = %v\n", countCompletions(data.FuzzyCompletions))
fmt.Fprintf(buf, "RankedCompletionsCount = %v\n", countCompletions(data.RankCompletions))
fmt.Fprintf(buf, "CaseSensitiveCompletionsCount = %v\n", countCompletions(data.CaseSensitiveCompletions))
fmt.Fprintf(buf, "DiagnosticsCount = %v\n", diagnosticsCount)
fmt.Fprintf(buf, "FoldingRangesCount = %v\n", len(data.FoldingRanges))
fmt.Fprintf(buf, "FormatCount = %v\n", len(data.Formats))
fmt.Fprintf(buf, "ImportCount = %v\n", len(data.Imports))
fmt.Fprintf(buf, "SemanticTokenCount = %v\n", len(data.SemanticTokens))
fmt.Fprintf(buf, "SuggestedFixCount = %v\n", len(data.SuggestedFixes))
fmt.Fprintf(buf, "FunctionExtractionCount = %v\n", len(data.FunctionExtractions))
fmt.Fprintf(buf, "MethodExtractionCount = %v\n", len(data.MethodExtractions))
fmt.Fprintf(buf, "DefinitionsCount = %v\n", definitionCount)
fmt.Fprintf(buf, "TypeDefinitionsCount = %v\n", typeDefinitionCount)
fmt.Fprintf(buf, "HighlightsCount = %v\n", len(data.Highlights))
fmt.Fprintf(buf, "InlayHintsCount = %v\n", len(data.InlayHints))
fmt.Fprintf(buf, "ReferencesCount = %v\n", len(data.References))
fmt.Fprintf(buf, "RenamesCount = %v\n", len(data.Renames))
fmt.Fprintf(buf, "PrepareRenamesCount = %v\n", len(data.PrepareRenames))
fmt.Fprintf(buf, "SymbolsCount = %v\n", len(data.Symbols))
fmt.Fprintf(buf, "WorkspaceSymbolsCount = %v\n", countWorkspaceSymbols(data.WorkspaceSymbols))
fmt.Fprintf(buf, "SignaturesCount = %v\n", len(data.Signatures))
fmt.Fprintf(buf, "LinksCount = %v\n", linksCount)
fmt.Fprintf(buf, "ImplementationsCount = %v\n", len(data.Implementations))
want := string(data.Golden(t, "summary", summaryFile, func() ([]byte, error) {
return buf.Bytes(), nil
}))
got := buf.String()
if want != got {
// These counters change when assertions are added or removed.
// They act as an independent safety net to ensure that the
// tests didn't spuriously pass because they did no work.
t.Errorf("test summary does not match:\n%s\n(Run with -golden to update golden file; also, there may be one per Go version.)", compare.Text(want, got))
}
}
func (data *Data) Mapper(uri span.URI) (*protocol.ColumnMapper, error) {
data.mappersMu.Lock()
defer data.mappersMu.Unlock()
if _, ok := data.mappers[uri]; !ok {
content, err := data.Exported.FileContents(uri.Filename())
if err != nil {
return nil, err
}
data.mappers[uri] = protocol.NewColumnMapper(uri, content)
}
return data.mappers[uri], nil
}
func (data *Data) Golden(t *testing.T, tag, target string, update func() ([]byte, error)) []byte {
t.Helper()
fragment, found := data.fragments[target]
if !found {
if filepath.IsAbs(target) {
t.Fatalf("invalid golden file fragment %v", target)
}
fragment = target
}
golden := data.golden[fragment]
if golden == nil {
if !*UpdateGolden {
t.Fatalf("could not find golden file %v: %v", fragment, tag)
}
golden = &Golden{
Filename: filepath.Join(data.dir, fragment+goldenFileSuffix),
Archive: &txtar.Archive{},
Modified: true,
}
data.golden[fragment] = golden
}
var file *txtar.File
for i := range golden.Archive.Files {
f := &golden.Archive.Files[i]
if f.Name == tag {
file = f
break
}
}
if *UpdateGolden {
if file == nil {
golden.Archive.Files = append(golden.Archive.Files, txtar.File{
Name: tag,
})
file = &golden.Archive.Files[len(golden.Archive.Files)-1]
}
contents, err := update()
if err != nil {
t.Fatalf("could not update golden file %v: %v", fragment, err)
}
file.Data = append(contents, '\n') // add trailing \n for txtar
golden.Modified = true
}
if file == nil {
t.Fatalf("could not find golden contents %v: %v", fragment, tag)
}
if len(file.Data) == 0 {
return file.Data
}
return file.Data[:len(file.Data)-1] // drop the trailing \n
}
func (data *Data) collectCodeLens(spn span.Span, title, cmd string) {
data.CodeLens[spn.URI()] = append(data.CodeLens[spn.URI()], protocol.CodeLens{
Range: data.mustRange(spn),
Command: protocol.Command{
Title: title,
Command: cmd,
},
})
}
func (data *Data) collectDiagnostics(spn span.Span, msgSource, msgPattern, msgSeverity string) {
severity := protocol.SeverityError
switch msgSeverity {
case "error":
severity = protocol.SeverityError
case "warning":
severity = protocol.SeverityWarning
case "hint":
severity = protocol.SeverityHint
case "information":
severity = protocol.SeverityInformation
}
data.Diagnostics[spn.URI()] = append(data.Diagnostics[spn.URI()], &source.Diagnostic{
Range: data.mustRange(spn),
Severity: severity,
Source: source.DiagnosticSource(msgSource),
Message: msgPattern,
})
}
func (data *Data) collectCompletions(typ CompletionTestType) func(span.Span, []token.Pos) {
result := func(m map[span.Span][]Completion, src span.Span, expected []token.Pos) {
m[src] = append(m[src], Completion{
CompletionItems: expected,
})
}
switch typ {
case CompletionDeep:
return func(src span.Span, expected []token.Pos) {
result(data.DeepCompletions, src, expected)
}
case CompletionUnimported:
return func(src span.Span, expected []token.Pos) {
result(data.UnimportedCompletions, src, expected)
}
case CompletionFuzzy:
return func(src span.Span, expected []token.Pos) {
result(data.FuzzyCompletions, src, expected)
}
case CompletionRank:
return func(src span.Span, expected []token.Pos) {
result(data.RankCompletions, src, expected)
}
case CompletionCaseSensitive:
return func(src span.Span, expected []token.Pos) {
result(data.CaseSensitiveCompletions, src, expected)
}
default:
return func(src span.Span, expected []token.Pos) {
result(data.Completions, src, expected)
}
}
}
func (data *Data) collectCompletionItems(pos token.Pos, args []string) {
if len(args) < 3 {
loc := data.Exported.ExpectFileSet.Position(pos)
data.t.Fatalf("%s:%d: @item expects at least 3 args, got %d",
loc.Filename, loc.Line, len(args))
}
label, detail, kind := args[0], args[1], args[2]
var documentation string
if len(args) == 4 {
documentation = args[3]
}
data.CompletionItems[pos] = &completion.CompletionItem{
Label: label,
Detail: detail,
Kind: protocol.ParseCompletionItemKind(kind),
Documentation: documentation,
}
}
func (data *Data) collectFoldingRanges(spn span.Span) {
data.FoldingRanges = append(data.FoldingRanges, spn)
}
func (data *Data) collectFormats(spn span.Span) {
data.Formats = append(data.Formats, spn)
}
func (data *Data) collectImports(spn span.Span) {
data.Imports = append(data.Imports, spn)
}
func (data *Data) collectAddImports(spn span.Span, imp string) {
data.AddImport[spn.URI()] = imp
}
func (data *Data) collectSemanticTokens(spn span.Span) {
data.SemanticTokens = append(data.SemanticTokens, spn)
}
func (data *Data) collectSuggestedFixes(spn span.Span, actionKind, fix string) {
data.SuggestedFixes[spn] = append(data.SuggestedFixes[spn], SuggestedFix{actionKind, fix})
}
func (data *Data) collectFunctionExtractions(start span.Span, end span.Span) {
if _, ok := data.FunctionExtractions[start]; !ok {
data.FunctionExtractions[start] = end
}
}
func (data *Data) collectMethodExtractions(start span.Span, end span.Span) {
if _, ok := data.MethodExtractions[start]; !ok {
data.MethodExtractions[start] = end
}
}
func (data *Data) collectDefinitions(src, target span.Span) {
data.Definitions[src] = Definition{
Src: src,
Def: target,
}
}
func (data *Data) collectImplementations(src span.Span, targets []span.Span) {
data.Implementations[src] = targets
}
func (data *Data) collectIncomingCalls(src span.Span, calls []span.Span) {
for _, call := range calls {
rng := data.mustRange(call)
// we're only comparing protocol.range
if data.CallHierarchy[src] != nil {
data.CallHierarchy[src].IncomingCalls = append(data.CallHierarchy[src].IncomingCalls,
protocol.CallHierarchyItem{
URI: protocol.DocumentURI(call.URI()),
Range: rng,
})
} else {
data.CallHierarchy[src] = &CallHierarchyResult{
IncomingCalls: []protocol.CallHierarchyItem{
{URI: protocol.DocumentURI(call.URI()), Range: rng},
},
}
}
}
}
func (data *Data) collectOutgoingCalls(src span.Span, calls []span.Span) {
if data.CallHierarchy[src] == nil {
data.CallHierarchy[src] = &CallHierarchyResult{}
}
for _, call := range calls {
// we're only comparing protocol.range
data.CallHierarchy[src].OutgoingCalls = append(data.CallHierarchy[src].OutgoingCalls,
protocol.CallHierarchyItem{
URI: protocol.DocumentURI(call.URI()),
Range: data.mustRange(call),
})
}
}
func (data *Data) collectHoverDefinitions(src, target span.Span) {
data.Definitions[src] = Definition{
Src: src,
Def: target,
OnlyHover: true,
}
}
func (data *Data) collectHovers(src span.Span, expected string) {
data.Hovers[src] = expected
}
func (data *Data) collectTypeDefinitions(src, target span.Span) {
data.Definitions[src] = Definition{
Src: src,
Def: target,
IsType: true,
}
}
func (data *Data) collectDefinitionNames(src span.Span, name string) {
d := data.Definitions[src]
d.Name = name
data.Definitions[src] = d
}
func (data *Data) collectHighlights(src span.Span, expected []span.Span) {
// Declaring a highlight in a test file: @highlight(src, expected1, expected2)
data.Highlights[src] = append(data.Highlights[src], expected...)
}
func (data *Data) collectInlayHints(src span.Span) {
data.InlayHints = append(data.InlayHints, src)
}
func (data *Data) collectReferences(src span.Span, expected []span.Span) {
data.References[src] = expected
}
func (data *Data) collectRenames(src span.Span, newText string) {
data.Renames[src] = newText
}
func (data *Data) collectPrepareRenames(src, spn span.Span, placeholder string) {
data.PrepareRenames[src] = &source.PrepareItem{
Range: data.mustRange(spn),
Text: placeholder,
}
}
// collectSymbols is responsible for collecting @symbol annotations.
func (data *Data) collectSymbols(name string, selectionRng span.Span, kind, detail, id, parentID string) {
// We don't set 'Range' here as it is difficult (impossible?) to express
// multi-line ranges in the packagestest framework.
uri := selectionRng.URI()
data.Symbols[uri] = append(data.Symbols[uri], &symbol{
pSymbol: protocol.DocumentSymbol{
Name: name,
Kind: protocol.ParseSymbolKind(kind),
SelectionRange: data.mustRange(selectionRng),
Detail: detail,
},
id: id,
parentID: parentID,
})
}
// mustRange converts spn into a protocol.Range, calling t.Fatal on any error.
func (data *Data) mustRange(spn span.Span) protocol.Range {
m, err := data.Mapper(spn.URI())
rng, err := m.Range(spn)
if err != nil {
// TODO(rfindley): this can probably just be a panic, at which point we
// don't need to close over t.
data.t.Fatal(err)
}
return rng
}
func (data *Data) collectWorkspaceSymbols(typ WorkspaceSymbolsTestType) func(*expect.Note, string) {
return func(note *expect.Note, query string) {
if data.WorkspaceSymbols[typ] == nil {
data.WorkspaceSymbols[typ] = make(map[span.URI][]string)
}
pos := data.Exported.ExpectFileSet.Position(note.Pos)
uri := span.URIFromPath(pos.Filename)
data.WorkspaceSymbols[typ][uri] = append(data.WorkspaceSymbols[typ][uri], query)
}
}
func (data *Data) collectSignatures(spn span.Span, signature string, activeParam int64) {
data.Signatures[spn] = &protocol.SignatureHelp{
Signatures: []protocol.SignatureInformation{
{
Label: signature,
},
},
ActiveParameter: uint32(activeParam),
}
// Hardcode special case to test the lack of a signature.
if signature == "" && activeParam == 0 {
data.Signatures[spn] = nil
}
}
func (data *Data) collectCompletionSnippets(spn span.Span, item token.Pos, plain, placeholder string) {
data.CompletionSnippets[spn] = append(data.CompletionSnippets[spn], CompletionSnippet{
CompletionItem: item,
PlainSnippet: plain,
PlaceholderSnippet: placeholder,
})
}
func (data *Data) collectLinks(spn span.Span, link string, note *expect.Note, fset *token.FileSet) {
position := fset.Position(note.Pos)
uri := spn.URI()
data.Links[uri] = append(data.Links[uri], Link{
Src: spn,
Target: link,
NotePosition: position,
})
}
func uriName(uri span.URI) string {
return filepath.Base(strings.TrimSuffix(uri.Filename(), ".go"))
}
func SpanName(spn span.Span) string {
return fmt.Sprintf("%v_%v_%v", uriName(spn.URI()), spn.Start().Line(), spn.Start().Column())
}
func CopyFolderToTempDir(folder string) (string, error) {
if _, err := os.Stat(folder); err != nil {
return "", err
}
dst, err := ioutil.TempDir("", "modfile_test")
if err != nil {
return "", err
}
fds, err := ioutil.ReadDir(folder)
if err != nil {
return "", err
}
for _, fd := range fds {
srcfp := filepath.Join(folder, fd.Name())
stat, err := os.Stat(srcfp)
if err != nil {
return "", err
}
if !stat.Mode().IsRegular() {
return "", fmt.Errorf("cannot copy non regular file %s", srcfp)
}
contents, err := ioutil.ReadFile(srcfp)
if err != nil {
return "", err
}
if err := ioutil.WriteFile(filepath.Join(dst, fd.Name()), contents, stat.Mode()); err != nil {
return "", err
}
}
return dst, nil
}
func shouldSkip(data *Data, uri span.URI) bool {
if data.ModfileFlagAvailable {
return false
}
// If the -modfile flag is not available, then we do not want to run
// any tests on the go.mod file.
if strings.HasSuffix(uri.Filename(), ".mod") {
return true
}
// If the -modfile flag is not available, then we do not want to test any
// uri that contains "go mod tidy".
m, err := data.Mapper(uri)
return err == nil && strings.Contains(string(m.Content), ", \"go mod tidy\",")
}