1 // Copyright 2018 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
18 "golang.org/x/tools/internal/lsp/cache"
19 "golang.org/x/tools/internal/lsp/diff"
20 "golang.org/x/tools/internal/lsp/diff/myers"
21 "golang.org/x/tools/internal/lsp/protocol"
22 "golang.org/x/tools/internal/lsp/source"
23 "golang.org/x/tools/internal/lsp/tests"
24 "golang.org/x/tools/internal/span"
25 "golang.org/x/tools/internal/testenv"
28 func TestMain(m *testing.M) {
29 testenv.ExitIfSmallMachine()
33 func TestLSP(t *testing.T) {
34 tests.RunTests(t, "testdata", true, testLSP)
40 diagnostics map[span.URI][]*source.Diagnostic
42 normalizers []tests.Normalizer
45 func testLSP(t *testing.T, datum *tests.Data) {
46 ctx := tests.Context(t)
48 cache := cache.New(ctx, nil)
49 session := cache.NewSession(ctx)
50 options := source.DefaultOptions().Clone()
51 tests.DefaultOptions(options)
52 session.SetOptions(options)
53 options.SetEnvSlice(datum.Config.Env)
54 view, snapshot, release, err := session.NewView(ctx, datum.Config.Dir, span.URIFromPath(datum.Config.Dir), "", options)
59 defer view.Shutdown(ctx)
61 // Enable type error analyses for tests.
62 // TODO(golang/go#38212): Delete this once they are enabled by default.
63 tests.EnableAllAnalyzers(view, options)
64 view.SetOptions(ctx, options)
66 // Only run the -modfile specific tests in module mode with Go 1.14 or above.
67 datum.ModfileFlagAvailable = len(snapshot.ModFiles()) > 0 && testenv.Go1Point() >= 14
70 var modifications []source.FileModification
71 for filename, content := range datum.Config.Overlay {
72 kind := source.DetectLanguage("", filename)
73 if kind != source.Go {
76 modifications = append(modifications, source.FileModification{
77 URI: span.URIFromPath(filename),
84 if err := session.ModifyFiles(ctx, modifications); err != nil {
88 server: NewServer(session, testClient{}),
91 normalizers: tests.CollectNormalizers(datum.Exported),
93 tests.Run(t, r, datum)
96 // testClient stubs any client functions that may be called by LSP functions.
97 type testClient struct {
101 // Trivially implement PublishDiagnostics so that we can call
102 // server.publishReports below to de-dup sent diagnostics.
103 func (c testClient) PublishDiagnostics(context.Context, *protocol.PublishDiagnosticsParams) error {
107 func (r *runner) CallHierarchy(t *testing.T, spn span.Span, expectedCalls *tests.CallHierarchyResult) {
108 mapper, err := r.data.Mapper(spn.URI())
112 loc, err := mapper.Location(spn)
114 t.Fatalf("failed for %v: %v", spn, err)
117 params := &protocol.CallHierarchyPrepareParams{
118 TextDocumentPositionParams: protocol.TextDocumentPositionParams{
119 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
120 Position: loc.Range.Start,
124 items, err := r.server.PrepareCallHierarchy(r.ctx, params)
129 t.Fatalf("expected call hierarchy item to be returned for identifier at %v\n", loc.Range)
132 callLocation := protocol.Location{
134 Range: items[0].Range,
136 if callLocation != loc {
137 t.Fatalf("expected server.PrepareCallHierarchy to return identifier at %v but got %v\n", loc, callLocation)
140 incomingCalls, err := r.server.IncomingCalls(r.ctx, &protocol.CallHierarchyIncomingCallsParams{Item: items[0]})
144 var incomingCallItems []protocol.CallHierarchyItem
145 for _, item := range incomingCalls {
146 incomingCallItems = append(incomingCallItems, item.From)
148 msg := tests.DiffCallHierarchyItems(incomingCallItems, expectedCalls.IncomingCalls)
150 t.Error(fmt.Sprintf("incoming calls: %s", msg))
153 outgoingCalls, err := r.server.OutgoingCalls(r.ctx, &protocol.CallHierarchyOutgoingCallsParams{Item: items[0]})
157 var outgoingCallItems []protocol.CallHierarchyItem
158 for _, item := range outgoingCalls {
159 outgoingCallItems = append(outgoingCallItems, item.To)
161 msg = tests.DiffCallHierarchyItems(outgoingCallItems, expectedCalls.OutgoingCalls)
163 t.Error(fmt.Sprintf("outgoing calls: %s", msg))
167 func (r *runner) CodeLens(t *testing.T, uri span.URI, want []protocol.CodeLens) {
168 if source.DetectLanguage("", uri.Filename()) != source.Mod {
171 got, err := r.server.codeLens(r.ctx, &protocol.CodeLensParams{
172 TextDocument: protocol.TextDocumentIdentifier{
173 URI: protocol.DocumentURI(uri),
179 if diff := tests.DiffCodeLens(uri, want, got); diff != "" {
180 t.Errorf("%s: %s", uri, diff)
184 func (r *runner) Diagnostics(t *testing.T, uri span.URI, want []*source.Diagnostic) {
185 // Get the diagnostics for this view if we have not done it before.
186 v := r.server.session.View(r.data.Config.Dir)
187 r.collectDiagnostics(v)
188 d := r.diagnostics[uri]
189 got := make([]*source.Diagnostic, len(d))
191 // A special case to test that there are no diagnostics for a file.
192 if len(want) == 1 && want[0].Source == "no_diagnostics" {
194 t.Errorf("expected no diagnostics for %s, got %v", uri, got)
198 if diff := tests.DiffDiagnostics(uri, want, got); diff != "" {
203 func (r *runner) FoldingRanges(t *testing.T, spn span.Span) {
205 view, err := r.server.session.ViewOf(uri)
209 original := view.Options()
212 // Test all folding ranges.
213 modified.LineFoldingOnly = false
214 view, err = view.SetOptions(r.ctx, modified)
219 ranges, err := r.server.FoldingRange(r.ctx, &protocol.FoldingRangeParams{
220 TextDocument: protocol.TextDocumentIdentifier{
221 URI: protocol.URIFromSpanURI(uri),
228 r.foldingRanges(t, "foldingRange", uri, ranges)
230 // Test folding ranges with lineFoldingOnly = true.
231 modified.LineFoldingOnly = true
232 view, err = view.SetOptions(r.ctx, modified)
237 ranges, err = r.server.FoldingRange(r.ctx, &protocol.FoldingRangeParams{
238 TextDocument: protocol.TextDocumentIdentifier{
239 URI: protocol.URIFromSpanURI(uri),
246 r.foldingRanges(t, "foldingRange-lineFolding", uri, ranges)
247 view.SetOptions(r.ctx, original)
250 func (r *runner) foldingRanges(t *testing.T, prefix string, uri span.URI, ranges []protocol.FoldingRange) {
251 m, err := r.data.Mapper(uri)
256 nonOverlapping := nonOverlappingRanges(ranges)
257 for i, rngs := range nonOverlapping {
258 got, err := foldRanges(m, string(m.Content), rngs)
263 tag := fmt.Sprintf("%s-%d", prefix, i)
264 want := string(r.data.Golden(tag, uri.Filename(), func() ([]byte, error) {
265 return []byte(got), nil
269 t.Errorf("%s: foldingRanges failed for %s, expected:\n%v\ngot:\n%v", tag, uri.Filename(), want, got)
274 kinds := []protocol.FoldingRangeKind{protocol.Imports, protocol.Comment}
275 for _, kind := range kinds {
276 var kindOnly []protocol.FoldingRange
277 for _, fRng := range ranges {
278 if fRng.Kind == string(kind) {
279 kindOnly = append(kindOnly, fRng)
283 nonOverlapping := nonOverlappingRanges(kindOnly)
284 for i, rngs := range nonOverlapping {
285 got, err := foldRanges(m, string(m.Content), rngs)
290 tag := fmt.Sprintf("%s-%s-%d", prefix, kind, i)
291 want := string(r.data.Golden(tag, uri.Filename(), func() ([]byte, error) {
292 return []byte(got), nil
296 t.Errorf("%s: foldingRanges failed for %s, expected:\n%v\ngot:\n%v", tag, uri.Filename(), want, got)
303 func nonOverlappingRanges(ranges []protocol.FoldingRange) (res [][]protocol.FoldingRange) {
304 for _, fRng := range ranges {
306 for i := 0; i < len(res); i++ {
308 for _, rng := range res[i] {
309 if conflict(rng, fRng) {
319 if setNum == len(res) {
320 res = append(res, []protocol.FoldingRange{})
322 res[setNum] = append(res[setNum], fRng)
327 func conflict(a, b protocol.FoldingRange) bool {
328 // a start position is <= b start positions
329 return (a.StartLine < b.StartLine || (a.StartLine == b.StartLine && a.StartCharacter <= b.StartCharacter)) &&
330 (a.EndLine > b.StartLine || (a.EndLine == b.StartLine && a.EndCharacter > b.StartCharacter))
333 func foldRanges(m *protocol.ColumnMapper, contents string, ranges []protocol.FoldingRange) (string, error) {
336 // Apply the edits from the end of the file forward
337 // to preserve the offsets
338 for i := len(ranges) - 1; i >= 0; i-- {
340 spn, err := m.RangeSpan(protocol.Range{
341 Start: protocol.Position{
342 Line: fRange.StartLine,
343 Character: fRange.StartCharacter,
345 End: protocol.Position{
346 Line: fRange.EndLine,
347 Character: fRange.EndCharacter,
353 start := spn.Start().Offset()
354 end := spn.End().Offset()
356 tmp := res[0:start] + foldedText
357 res = tmp + res[end:]
362 func (r *runner) Format(t *testing.T, spn span.Span) {
364 filename := uri.Filename()
365 gofmted := string(r.data.Golden("gofmt", filename, func() ([]byte, error) {
366 cmd := exec.Command("gofmt", filename)
367 out, _ := cmd.Output() // ignore error, sometimes we have intentionally ungofmt-able files
371 edits, err := r.server.Formatting(r.ctx, &protocol.DocumentFormattingParams{
372 TextDocument: protocol.TextDocumentIdentifier{
373 URI: protocol.URIFromSpanURI(uri),
382 m, err := r.data.Mapper(uri)
386 sedits, err := source.FromProtocolEdits(m, edits)
390 got := diff.ApplyEdits(string(m.Content), sedits)
392 t.Errorf("format failed for %s, expected:\n%v\ngot:\n%v", filename, gofmted, got)
396 func (r *runner) SemanticTokens(t *testing.T, spn span.Span) {
398 filename := uri.Filename()
399 // this is called solely for coverage in semantic.go
400 _, err := r.server.semanticTokensFull(r.ctx, &protocol.SemanticTokensParams{
401 TextDocument: protocol.TextDocumentIdentifier{
402 URI: protocol.URIFromSpanURI(uri),
406 t.Errorf("%v for %s", err, filename)
408 _, err = r.server.semanticTokensRange(r.ctx, &protocol.SemanticTokensRangeParams{
409 TextDocument: protocol.TextDocumentIdentifier{
410 URI: protocol.URIFromSpanURI(uri),
412 // any legal range. Just to exercise the call.
413 Range: protocol.Range{
414 Start: protocol.Position{
418 End: protocol.Position{
425 t.Errorf("%v for Range %s", err, filename)
429 func (r *runner) Import(t *testing.T, spn span.Span) {
431 filename := uri.Filename()
432 actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
433 TextDocument: protocol.TextDocumentIdentifier{
434 URI: protocol.URIFromSpanURI(uri),
440 m, err := r.data.Mapper(uri)
444 got := string(m.Content)
445 if len(actions) > 0 {
446 res, err := applyTextDocumentEdits(r, actions[0].Edit.DocumentChanges)
452 want := string(r.data.Golden("goimports", filename, func() ([]byte, error) {
453 return []byte(got), nil
456 d, err := myers.ComputeEdits(uri, want, got)
460 t.Errorf("import failed for %s: %s", filename, diff.ToUnified("want", "got", want, d))
464 func (r *runner) SuggestedFix(t *testing.T, spn span.Span, actionKinds []string, expectedActions int) {
466 view, err := r.server.session.ViewOf(uri)
471 snapshot, release := view.Snapshot(r.ctx)
474 fh, err := snapshot.GetVersionedFile(r.ctx, uri)
478 m, err := r.data.Mapper(uri)
482 rng, err := m.Range(spn)
486 // Get the diagnostics for this view if we have not done it before.
487 r.collectDiagnostics(view)
488 var diagnostics []protocol.Diagnostic
489 for _, d := range r.diagnostics[uri] {
490 // Compare the start positions rather than the entire range because
491 // some diagnostics have a range with the same start and end position (8:1-8:1).
492 // The current marker functionality prevents us from having a range of 0 length.
493 if protocol.ComparePosition(d.Range.Start, rng.Start) == 0 {
494 diagnostics = append(diagnostics, toProtocolDiagnostics([]*source.Diagnostic{d})...)
498 codeActionKinds := []protocol.CodeActionKind{}
499 for _, k := range actionKinds {
500 codeActionKinds = append(codeActionKinds, protocol.CodeActionKind(k))
502 actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
503 TextDocument: protocol.TextDocumentIdentifier{
504 URI: protocol.URIFromSpanURI(uri),
507 Context: protocol.CodeActionContext{
508 Only: codeActionKinds,
509 Diagnostics: diagnostics,
513 t.Fatalf("CodeAction %s failed: %v", spn, err)
515 if len(actions) != expectedActions {
516 // Hack: We assume that we only get one code action per range.
518 for _, a := range actions {
519 cmds = append(cmds, fmt.Sprintf("%s (%s)", a.Command.Command, a.Title))
521 t.Fatalf("unexpected number of code actions, want %d, got %d: %v", expectedActions, len(actions), cmds)
525 for _, k := range codeActionKinds {
526 if action.Kind == k {
532 t.Fatalf("unexpected kind for code action %s, expected one of %v, got %v", action.Title, codeActionKinds, action.Kind)
534 var res map[span.URI]string
535 if cmd := action.Command; cmd != nil {
536 edits, err := commandToEdits(r.ctx, snapshot, fh, rng, action.Command.Command)
538 t.Fatalf("error converting command %q to edits: %v", action.Command.Command, err)
540 res, err = applyTextDocumentEdits(r, edits)
545 res, err = applyTextDocumentEdits(r, action.Edit.DocumentChanges)
550 for u, got := range res {
551 want := string(r.data.Golden("suggestedfix_"+tests.SpanName(spn), u.Filename(), func() ([]byte, error) {
552 return []byte(got), nil
555 t.Errorf("suggested fixes failed for %s:\n%s", u.Filename(), tests.Diff(t, want, got))
560 func commandToEdits(ctx context.Context, snapshot source.Snapshot, fh source.VersionedFileHandle, rng protocol.Range, cmd string) ([]protocol.TextDocumentEdit, error) {
561 var command *source.Command
562 for _, c := range source.Commands {
569 return nil, fmt.Errorf("no known command for %s", cmd)
571 if !command.Applies(ctx, snapshot, fh, rng) {
572 return nil, fmt.Errorf("cannot apply %v", command.ID())
574 edits, err := command.SuggestedFix(ctx, snapshot, fh, rng)
576 return nil, fmt.Errorf("error calling command.SuggestedFix: %v", err)
581 func (r *runner) FunctionExtraction(t *testing.T, start span.Span, end span.Span) {
583 view, err := r.server.session.ViewOf(uri)
588 snapshot, release := view.Snapshot(r.ctx)
591 fh, err := snapshot.GetVersionedFile(r.ctx, uri)
595 m, err := r.data.Mapper(uri)
599 spn := span.New(start.URI(), start.Start(), end.End())
600 rng, err := m.Range(spn)
604 actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
605 TextDocument: protocol.TextDocumentIdentifier{
606 URI: protocol.URIFromSpanURI(uri),
609 Context: protocol.CodeActionContext{
610 Only: []protocol.CodeActionKind{"refactor.extract"},
616 // Hack: We assume that we only get one code action per range.
617 // TODO(rstambler): Support multiple code actions per test.
618 if len(actions) == 0 || len(actions) > 1 {
619 t.Fatalf("unexpected number of code actions, want 1, got %v", len(actions))
621 edits, err := commandToEdits(r.ctx, snapshot, fh, rng, actions[0].Command.Command)
625 res, err := applyTextDocumentEdits(r, edits)
629 for u, got := range res {
630 want := string(r.data.Golden("functionextraction_"+tests.SpanName(spn), u.Filename(), func() ([]byte, error) {
631 return []byte(got), nil
634 t.Errorf("function extraction failed for %s:\n%s", u.Filename(), tests.Diff(t, want, got))
639 func (r *runner) Definition(t *testing.T, spn span.Span, d tests.Definition) {
640 sm, err := r.data.Mapper(d.Src.URI())
644 loc, err := sm.Location(d.Src)
646 t.Fatalf("failed for %v: %v", d.Src, err)
648 tdpp := protocol.TextDocumentPositionParams{
649 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
650 Position: loc.Range.Start,
652 var locs []protocol.Location
653 var hover *protocol.Hover
655 params := &protocol.TypeDefinitionParams{
656 TextDocumentPositionParams: tdpp,
658 locs, err = r.server.TypeDefinition(r.ctx, params)
660 params := &protocol.DefinitionParams{
661 TextDocumentPositionParams: tdpp,
663 locs, err = r.server.Definition(r.ctx, params)
665 t.Fatalf("failed for %v: %+v", d.Src, err)
667 v := &protocol.HoverParams{
668 TextDocumentPositionParams: tdpp,
670 hover, err = r.server.Hover(r.ctx, v)
673 t.Fatalf("failed for %v: %v", d.Src, err)
676 t.Errorf("got %d locations for definition, expected 1", len(locs))
678 didSomething := false
681 tag := fmt.Sprintf("%s-hover", d.Name)
682 expectHover := string(r.data.Golden(tag, d.Src.URI().Filename(), func() ([]byte, error) {
683 return []byte(hover.Contents.Value), nil
685 if hover.Contents.Value != expectHover {
686 t.Errorf("%s:\n%s", d.Src, tests.Diff(t, expectHover, hover.Contents.Value))
691 locURI := locs[0].URI.SpanURI()
692 lm, err := r.data.Mapper(locURI)
696 if def, err := lm.Span(locs[0]); err != nil {
697 t.Fatalf("failed for %v: %v", locs[0], err)
698 } else if def != d.Def {
699 t.Errorf("for %v got %v want %v", d.Src, def, d.Def)
703 t.Errorf("no tests ran for %s", d.Src.URI())
707 func (r *runner) Implementation(t *testing.T, spn span.Span, impls []span.Span) {
708 sm, err := r.data.Mapper(spn.URI())
712 loc, err := sm.Location(spn)
714 t.Fatalf("failed for %v: %v", spn, err)
716 tdpp := protocol.TextDocumentPositionParams{
717 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
718 Position: loc.Range.Start,
720 var locs []protocol.Location
721 params := &protocol.ImplementationParams{
722 TextDocumentPositionParams: tdpp,
724 locs, err = r.server.Implementation(r.ctx, params)
726 t.Fatalf("failed for %v: %v", spn, err)
728 if len(locs) != len(impls) {
729 t.Fatalf("got %d locations for implementation, expected %d", len(locs), len(impls))
732 var results []span.Span
733 for i := range locs {
734 locURI := locs[i].URI.SpanURI()
735 lm, err := r.data.Mapper(locURI)
739 imp, err := lm.Span(locs[i])
741 t.Fatalf("failed for %v: %v", locs[i], err)
743 results = append(results, imp)
745 // Sort results and expected to make tests deterministic.
746 sort.SliceStable(results, func(i, j int) bool {
747 return span.Compare(results[i], results[j]) == -1
749 sort.SliceStable(impls, func(i, j int) bool {
750 return span.Compare(impls[i], impls[j]) == -1
752 for i := range results {
753 if results[i] != impls[i] {
754 t.Errorf("for %dth implementation of %v got %v want %v", i, spn, results[i], impls[i])
759 func (r *runner) Highlight(t *testing.T, src span.Span, locations []span.Span) {
760 m, err := r.data.Mapper(src.URI())
764 loc, err := m.Location(src)
766 t.Fatalf("failed for %v: %v", locations[0], err)
768 tdpp := protocol.TextDocumentPositionParams{
769 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
770 Position: loc.Range.Start,
772 params := &protocol.DocumentHighlightParams{
773 TextDocumentPositionParams: tdpp,
775 highlights, err := r.server.DocumentHighlight(r.ctx, params)
779 if len(highlights) != len(locations) {
780 t.Fatalf("got %d highlights for highlight at %v:%v:%v, expected %d", len(highlights), src.URI().Filename(), src.Start().Line(), src.Start().Column(), len(locations))
782 // Check to make sure highlights have a valid range.
783 var results []span.Span
784 for i := range highlights {
785 h, err := m.RangeSpan(highlights[i].Range)
787 t.Fatalf("failed for %v: %v", highlights[i], err)
789 results = append(results, h)
791 // Sort results to make tests deterministic since DocumentHighlight uses a map.
792 sort.SliceStable(results, func(i, j int) bool {
793 return span.Compare(results[i], results[j]) == -1
795 // Check to make sure all the expected highlights are found.
796 for i := range results {
797 if results[i] != locations[i] {
798 t.Errorf("want %v, got %v\n", locations[i], results[i])
803 func (r *runner) References(t *testing.T, src span.Span, itemList []span.Span) {
804 sm, err := r.data.Mapper(src.URI())
808 loc, err := sm.Location(src)
810 t.Fatalf("failed for %v: %v", src, err)
812 for _, includeDeclaration := range []bool{true, false} {
813 t.Run(fmt.Sprintf("refs-declaration-%v", includeDeclaration), func(t *testing.T) {
814 want := make(map[protocol.Location]bool)
815 for i, pos := range itemList {
816 // We don't want the first result if we aren't including the declaration.
817 if i == 0 && !includeDeclaration {
820 m, err := r.data.Mapper(pos.URI())
824 loc, err := m.Location(pos)
826 t.Fatalf("failed for %v: %v", src, err)
830 params := &protocol.ReferenceParams{
831 TextDocumentPositionParams: protocol.TextDocumentPositionParams{
832 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
833 Position: loc.Range.Start,
835 Context: protocol.ReferenceContext{
836 IncludeDeclaration: includeDeclaration,
839 got, err := r.server.References(r.ctx, params)
841 t.Fatalf("failed for %v: %v", src, err)
843 if len(got) != len(want) {
844 t.Errorf("references failed: different lengths got %v want %v", len(got), len(want))
846 for _, loc := range got {
848 t.Errorf("references failed: incorrect references got %v want %v", loc, want)
855 func (r *runner) Rename(t *testing.T, spn span.Span, newText string) {
856 tag := fmt.Sprintf("%s-rename", newText)
859 filename := uri.Filename()
860 sm, err := r.data.Mapper(uri)
864 loc, err := sm.Location(spn)
866 t.Fatalf("failed for %v: %v", spn, err)
869 wedit, err := r.server.Rename(r.ctx, &protocol.RenameParams{
870 TextDocument: protocol.TextDocumentIdentifier{
871 URI: protocol.URIFromSpanURI(uri),
873 Position: loc.Range.Start,
877 renamed := string(r.data.Golden(tag, filename, func() ([]byte, error) {
878 return []byte(err.Error()), nil
880 if err.Error() != renamed {
881 t.Errorf("rename failed for %s, expected:\n%v\ngot:\n%v\n", newText, renamed, err)
885 res, err := applyTextDocumentEdits(r, wedit.DocumentChanges)
889 var orderedURIs []string
890 for uri := range res {
891 orderedURIs = append(orderedURIs, string(uri))
893 sort.Strings(orderedURIs)
896 for i := 0; i < len(res); i++ {
900 uri := span.URIFromURI(orderedURIs[i])
902 got += filepath.Base(uri.Filename()) + ":\n"
907 want := string(r.data.Golden(tag, filename, func() ([]byte, error) {
908 return []byte(got), nil
911 t.Errorf("rename failed for %s:\n%s", newText, tests.Diff(t, want, got))
915 func (r *runner) PrepareRename(t *testing.T, src span.Span, want *source.PrepareItem) {
916 m, err := r.data.Mapper(src.URI())
920 loc, err := m.Location(src)
922 t.Fatalf("failed for %v: %v", src, err)
924 tdpp := protocol.TextDocumentPositionParams{
925 TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
926 Position: loc.Range.Start,
928 params := &protocol.PrepareRenameParams{
929 TextDocumentPositionParams: tdpp,
931 got, err := r.server.PrepareRename(context.Background(), params)
933 t.Errorf("prepare rename failed for %v: got error: %v", src, err)
936 // we all love typed nils
938 if want.Text != "" { // expected an ident.
939 t.Errorf("prepare rename failed for %v: got nil", src)
943 if got.Start == got.End {
944 // Special case for 0-length ranges. Marks can't specify a 0-length range,
945 // so just compare the start.
946 if got.Start != want.Range.Start {
947 t.Errorf("prepare rename failed: incorrect point, got %v want %v", got.Start, want.Range.Start)
950 if protocol.CompareRange(*got, want.Range) != 0 {
951 t.Errorf("prepare rename failed: incorrect range got %v want %v", *got, want.Range)
956 func applyTextDocumentEdits(r *runner, edits []protocol.TextDocumentEdit) (map[span.URI]string, error) {
957 res := map[span.URI]string{}
958 for _, docEdits := range edits {
959 uri := docEdits.TextDocument.URI.SpanURI()
960 var m *protocol.ColumnMapper
961 // If we have already edited this file, we use the edited version (rather than the
962 // file in its original state) so that we preserve our initial changes.
963 if content, ok := res[uri]; ok {
964 m = &protocol.ColumnMapper{
966 Converter: span.NewContentConverter(
967 uri.Filename(), []byte(content)),
968 Content: []byte(content),
972 if m, err = r.data.Mapper(uri); err != nil {
976 res[uri] = string(m.Content)
977 sedits, err := source.FromProtocolEdits(m, docEdits.Edits)
981 res[uri] = applyEdits(res[uri], sedits)
986 func applyEdits(contents string, edits []diff.TextEdit) string {
989 // Apply the edits from the end of the file forward
990 // to preserve the offsets
991 for i := len(edits) - 1; i >= 0; i-- {
993 start := edit.Span.Start().Offset()
994 end := edit.Span.End().Offset()
995 tmp := res[0:start] + edit.NewText
996 res = tmp + res[end:]
1001 func (r *runner) Symbols(t *testing.T, uri span.URI, expectedSymbols []protocol.DocumentSymbol) {
1002 params := &protocol.DocumentSymbolParams{
1003 TextDocument: protocol.TextDocumentIdentifier{
1004 URI: protocol.URIFromSpanURI(uri),
1007 got, err := r.server.DocumentSymbol(r.ctx, params)
1011 if len(got) != len(expectedSymbols) {
1012 t.Errorf("want %d top-level symbols in %v, got %d", len(expectedSymbols), uri, len(got))
1015 symbols := make([]protocol.DocumentSymbol, len(got))
1016 for i, s := range got {
1017 s, ok := s.(protocol.DocumentSymbol)
1019 t.Fatalf("%v: wanted []DocumentSymbols but got %v", uri, got)
1023 if diff := tests.DiffSymbols(t, uri, expectedSymbols, symbols); diff != "" {
1028 func (r *runner) WorkspaceSymbols(t *testing.T, uri span.URI, query string, typ tests.WorkspaceSymbolsTestType) {
1029 r.callWorkspaceSymbols(t, uri, query, typ)
1032 func (r *runner) callWorkspaceSymbols(t *testing.T, uri span.URI, query string, typ tests.WorkspaceSymbolsTestType) {
1035 matcher := tests.WorkspaceSymbolsTestTypeToMatcher(typ)
1037 original := r.server.session.Options()
1038 modified := original
1039 modified.SymbolMatcher = matcher
1040 r.server.session.SetOptions(modified)
1041 defer r.server.session.SetOptions(original)
1043 params := &protocol.WorkspaceSymbolParams{
1046 gotSymbols, err := r.server.Symbol(r.ctx, params)
1050 got, err := tests.WorkspaceSymbolsString(r.ctx, r.data, uri, gotSymbols)
1054 got = filepath.ToSlash(tests.Normalize(got, r.normalizers))
1055 want := string(r.data.Golden(fmt.Sprintf("workspace_symbol-%s-%s", strings.ToLower(string(matcher)), query), uri.Filename(), func() ([]byte, error) {
1056 return []byte(got), nil
1058 if diff := tests.Diff(t, want, got); diff != "" {
1063 func (r *runner) SignatureHelp(t *testing.T, spn span.Span, want *protocol.SignatureHelp) {
1064 m, err := r.data.Mapper(spn.URI())
1068 loc, err := m.Location(spn)
1070 t.Fatalf("failed for %v: %v", loc, err)
1072 tdpp := protocol.TextDocumentPositionParams{
1073 TextDocument: protocol.TextDocumentIdentifier{
1074 URI: protocol.URIFromSpanURI(spn.URI()),
1076 Position: loc.Range.Start,
1078 params := &protocol.SignatureHelpParams{
1079 TextDocumentPositionParams: tdpp,
1081 got, err := r.server.SignatureHelp(r.ctx, params)
1083 // Only fail if we got an error we did not expect.
1091 t.Errorf("expected no signature, got %v", got)
1096 t.Fatalf("expected %v, got nil", want)
1098 diff, err := tests.DiffSignatures(spn, want, got)
1107 func (r *runner) Link(t *testing.T, uri span.URI, wantLinks []tests.Link) {
1108 m, err := r.data.Mapper(uri)
1112 got, err := r.server.DocumentLink(r.ctx, &protocol.DocumentLinkParams{
1113 TextDocument: protocol.TextDocumentIdentifier{
1114 URI: protocol.URIFromSpanURI(uri),
1120 if diff := tests.DiffLinks(m, wantLinks, got); diff != "" {
1125 func TestBytesOffset(t *testing.T) {
1128 pos protocol.Position
1131 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 0}, want: 0},
1132 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 1}, want: 1},
1133 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 2}, want: 1},
1134 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 3}, want: 5},
1135 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 4}, want: 6},
1136 {text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 5}, want: -1},
1137 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 0, Character: 3}, want: 3},
1138 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 0, Character: 4}, want: 3},
1139 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 0}, want: 4},
1140 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 3}, want: 7},
1141 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 4}, want: 7},
1142 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 2, Character: 0}, want: 8},
1143 {text: "aaa\nbbb\n", pos: protocol.Position{Line: 2, Character: 1}, want: -1},
1144 {text: "aaa\nbbb\n\n", pos: protocol.Position{Line: 2, Character: 0}, want: 8},
1147 for i, test := range tests {
1148 fname := fmt.Sprintf("test %d", i)
1149 fset := token.NewFileSet()
1150 f := fset.AddFile(fname, -1, len(test.text))
1151 f.SetLinesForContent([]byte(test.text))
1152 uri := span.URIFromPath(fname)
1153 converter := span.NewContentConverter(fname, []byte(test.text))
1154 mapper := &protocol.ColumnMapper{
1156 Converter: converter,
1157 Content: []byte(test.text),
1159 got, err := mapper.Point(test.pos)
1160 if err != nil && test.want != -1 {
1161 t.Errorf("unexpected error: %v", err)
1163 if err == nil && got.Offset() != test.want {
1164 t.Errorf("want %d for %q(Line:%d,Character:%d), but got %d", test.want, test.text, int(test.pos.Line), int(test.pos.Character), got.Offset())
1169 func (r *runner) collectDiagnostics(view source.View) {
1170 if r.diagnostics != nil {
1173 r.diagnostics = make(map[span.URI][]*source.Diagnostic)
1175 snapshot, release := view.Snapshot(r.ctx)
1178 // Always run diagnostics with analysis.
1179 r.server.diagnose(r.ctx, snapshot, true)
1180 for uri, reports := range r.server.diagnostics {
1181 var diagnostics []*source.Diagnostic
1182 for _, report := range reports.reports {
1183 for _, d := range report.diags {
1184 diagnostics = append(diagnostics, &source.Diagnostic{
1188 Severity: d.Severity,
1193 r.diagnostics[uri] = diagnostics