blob: 705e26a5641f80131df6dc0ac1480ffb10e73be8 [file] [log] [blame]
// Copyright 2018 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 lsp
import (
"context"
"fmt"
"go/token"
"os"
"os/exec"
"path/filepath"
"sort"
"testing"
"golang.org/x/tools/internal/lsp/cache"
"golang.org/x/tools/internal/lsp/diff"
"golang.org/x/tools/internal/lsp/diff/myers"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/lsp/tests"
"golang.org/x/tools/internal/span"
"golang.org/x/tools/internal/testenv"
)
func TestMain(m *testing.M) {
testenv.ExitIfSmallMachine()
os.Exit(m.Run())
}
func TestLSP(t *testing.T) {
tests.RunTests(t, "testdata", true, testLSP)
}
type runner struct {
server *Server
data *tests.Data
diagnostics map[span.URI][]*source.Diagnostic
ctx context.Context
}
func testLSP(t *testing.T, datum *tests.Data) {
ctx := tests.Context(t)
cache := cache.New(ctx, nil)
session := cache.NewSession(ctx)
options := source.DefaultOptions().Clone()
tests.DefaultOptions(options)
session.SetOptions(options)
options.SetEnvSlice(datum.Config.Env)
view, snapshot, release, err := session.NewView(ctx, datum.Config.Dir, span.URIFromPath(datum.Config.Dir), "", options)
if err != nil {
t.Fatal(err)
}
defer view.Shutdown(ctx)
// Enable type error analyses for tests.
// TODO(golang/go#38212): Delete this once they are enabled by default.
tests.EnableAllAnalyzers(view, options)
view.SetOptions(ctx, options)
// Only run the -modfile specific tests in module mode with Go 1.14 or above.
datum.ModfileFlagAvailable = len(snapshot.ModFiles()) > 0 && testenv.Go1Point() >= 14
release()
var modifications []source.FileModification
for filename, content := range datum.Config.Overlay {
kind := source.DetectLanguage("", filename)
if kind != source.Go {
continue
}
modifications = append(modifications, source.FileModification{
URI: span.URIFromPath(filename),
Action: source.Open,
Version: -1,
Text: content,
LanguageID: "go",
})
}
if err := session.ModifyFiles(ctx, modifications); err != nil {
t.Fatal(err)
}
r := &runner{
server: NewServer(session, testClient{}),
data: datum,
ctx: ctx,
}
tests.Run(t, r, datum)
}
// testClient stubs any client functions that may be called by LSP functions.
type testClient struct {
protocol.Client
}
// Trivially implement PublishDiagnostics so that we can call
// server.publishReports below to de-dup sent diagnostics.
func (c testClient) PublishDiagnostics(context.Context, *protocol.PublishDiagnosticsParams) error {
return nil
}
func (r *runner) CallHierarchy(t *testing.T, spn span.Span, expectedCalls *tests.CallHierarchyResult) {
mapper, err := r.data.Mapper(spn.URI())
if err != nil {
t.Fatal(err)
}
loc, err := mapper.Location(spn)
if err != nil {
t.Fatalf("failed for %v: %v", spn, err)
}
params := &protocol.CallHierarchyPrepareParams{
TextDocumentPositionParams: protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
},
}
items, err := r.server.PrepareCallHierarchy(r.ctx, params)
if err != nil {
t.Fatal(err)
}
if len(items) == 0 {
t.Fatalf("expected call hierarchy item to be returned for identifier at %v\n", loc.Range)
}
callLocation := protocol.Location{
URI: items[0].URI,
Range: items[0].Range,
}
if callLocation != loc {
t.Fatalf("expected server.PrepareCallHierarchy to return identifier at %v but got %v\n", loc, callLocation)
}
incomingCalls, err := r.server.IncomingCalls(r.ctx, &protocol.CallHierarchyIncomingCallsParams{Item: items[0]})
if err != nil {
t.Error(err)
}
var incomingCallItems []protocol.CallHierarchyItem
for _, item := range incomingCalls {
incomingCallItems = append(incomingCallItems, item.From)
}
msg := tests.DiffCallHierarchyItems(incomingCallItems, expectedCalls.IncomingCalls)
if msg != "" {
t.Error(fmt.Sprintf("incoming calls: %s", msg))
}
outgoingCalls, err := r.server.OutgoingCalls(r.ctx, &protocol.CallHierarchyOutgoingCallsParams{Item: items[0]})
if err != nil {
t.Error(err)
}
var outgoingCallItems []protocol.CallHierarchyItem
for _, item := range outgoingCalls {
outgoingCallItems = append(outgoingCallItems, item.To)
}
msg = tests.DiffCallHierarchyItems(outgoingCallItems, expectedCalls.OutgoingCalls)
if msg != "" {
t.Error(fmt.Sprintf("outgoing calls: %s", msg))
}
}
func (r *runner) CodeLens(t *testing.T, uri span.URI, want []protocol.CodeLens) {
if source.DetectLanguage("", uri.Filename()) != source.Mod {
return
}
got, err := r.server.codeLens(r.ctx, &protocol.CodeLensParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.DocumentURI(uri),
},
})
if err != nil {
t.Fatal(err)
}
if diff := tests.DiffCodeLens(uri, want, got); diff != "" {
t.Errorf("%s: %s", uri, diff)
}
}
func (r *runner) Diagnostics(t *testing.T, uri span.URI, want []*source.Diagnostic) {
// Get the diagnostics for this view if we have not done it before.
v := r.server.session.View(r.data.Config.Dir)
r.collectDiagnostics(v)
d := r.diagnostics[uri]
got := make([]*source.Diagnostic, len(d))
copy(got, d)
// A special case to test that there are no diagnostics for a file.
if len(want) == 1 && want[0].Source == "no_diagnostics" {
if len(got) != 0 {
t.Errorf("expected no diagnostics for %s, got %v", uri, got)
}
return
}
if diff := tests.DiffDiagnostics(uri, want, got); diff != "" {
t.Error(diff)
}
}
func (r *runner) FoldingRanges(t *testing.T, spn span.Span) {
uri := spn.URI()
view, err := r.server.session.ViewOf(uri)
if err != nil {
t.Fatal(err)
}
original := view.Options()
modified := original
// Test all folding ranges.
modified.LineFoldingOnly = false
view, err = view.SetOptions(r.ctx, modified)
if err != nil {
t.Error(err)
return
}
ranges, err := r.server.FoldingRange(r.ctx, &protocol.FoldingRangeParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
t.Error(err)
return
}
r.foldingRanges(t, "foldingRange", uri, ranges)
// Test folding ranges with lineFoldingOnly = true.
modified.LineFoldingOnly = true
view, err = view.SetOptions(r.ctx, modified)
if err != nil {
t.Error(err)
return
}
ranges, err = r.server.FoldingRange(r.ctx, &protocol.FoldingRangeParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
t.Error(err)
return
}
r.foldingRanges(t, "foldingRange-lineFolding", uri, ranges)
view.SetOptions(r.ctx, original)
}
func (r *runner) foldingRanges(t *testing.T, prefix string, uri span.URI, ranges []protocol.FoldingRange) {
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
// Fold all ranges.
nonOverlapping := nonOverlappingRanges(ranges)
for i, rngs := range nonOverlapping {
got, err := foldRanges(m, string(m.Content), rngs)
if err != nil {
t.Error(err)
continue
}
tag := fmt.Sprintf("%s-%d", prefix, i)
want := string(r.data.Golden(tag, uri.Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
t.Errorf("%s: foldingRanges failed for %s, expected:\n%v\ngot:\n%v", tag, uri.Filename(), want, got)
}
}
// Filter by kind.
kinds := []protocol.FoldingRangeKind{protocol.Imports, protocol.Comment}
for _, kind := range kinds {
var kindOnly []protocol.FoldingRange
for _, fRng := range ranges {
if fRng.Kind == string(kind) {
kindOnly = append(kindOnly, fRng)
}
}
nonOverlapping := nonOverlappingRanges(kindOnly)
for i, rngs := range nonOverlapping {
got, err := foldRanges(m, string(m.Content), rngs)
if err != nil {
t.Error(err)
continue
}
tag := fmt.Sprintf("%s-%s-%d", prefix, kind, i)
want := string(r.data.Golden(tag, uri.Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
t.Errorf("%s: foldingRanges failed for %s, expected:\n%v\ngot:\n%v", tag, uri.Filename(), want, got)
}
}
}
}
func nonOverlappingRanges(ranges []protocol.FoldingRange) (res [][]protocol.FoldingRange) {
for _, fRng := range ranges {
setNum := len(res)
for i := 0; i < len(res); i++ {
canInsert := true
for _, rng := range res[i] {
if conflict(rng, fRng) {
canInsert = false
break
}
}
if canInsert {
setNum = i
break
}
}
if setNum == len(res) {
res = append(res, []protocol.FoldingRange{})
}
res[setNum] = append(res[setNum], fRng)
}
return res
}
func conflict(a, b protocol.FoldingRange) bool {
// a start position is <= b start positions
return (a.StartLine < b.StartLine || (a.StartLine == b.StartLine && a.StartCharacter <= b.StartCharacter)) &&
(a.EndLine > b.StartLine || (a.EndLine == b.StartLine && a.EndCharacter > b.StartCharacter))
}
func foldRanges(m *protocol.ColumnMapper, contents string, ranges []protocol.FoldingRange) (string, error) {
foldedText := "<>"
res := contents
// Apply the edits from the end of the file forward
// to preserve the offsets
for i := len(ranges) - 1; i >= 0; i-- {
fRange := ranges[i]
spn, err := m.RangeSpan(protocol.Range{
Start: protocol.Position{
Line: fRange.StartLine,
Character: fRange.StartCharacter,
},
End: protocol.Position{
Line: fRange.EndLine,
Character: fRange.EndCharacter,
},
})
if err != nil {
return "", err
}
start := spn.Start().Offset()
end := spn.End().Offset()
tmp := res[0:start] + foldedText
res = tmp + res[end:]
}
return res, nil
}
func (r *runner) Format(t *testing.T, spn span.Span) {
uri := spn.URI()
filename := uri.Filename()
gofmted := string(r.data.Golden("gofmt", filename, func() ([]byte, error) {
cmd := exec.Command("gofmt", filename)
out, _ := cmd.Output() // ignore error, sometimes we have intentionally ungofmt-able files
return out, nil
}))
edits, err := r.server.Formatting(r.ctx, &protocol.DocumentFormattingParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
if gofmted != "" {
t.Error(err)
}
return
}
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
sedits, err := source.FromProtocolEdits(m, edits)
if err != nil {
t.Error(err)
}
got := diff.ApplyEdits(string(m.Content), sedits)
if gofmted != got {
t.Errorf("format failed for %s, expected:\n%v\ngot:\n%v", filename, gofmted, got)
}
}
func (r *runner) SemanticTokens(t *testing.T, spn span.Span) {
uri := spn.URI()
filename := uri.Filename()
// this is called solely for coverage in semantic.go
_, err := r.server.semanticTokensFull(r.ctx, &protocol.SemanticTokensParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
t.Errorf("%v for %s", err, filename)
}
_, err = r.server.semanticTokensRange(r.ctx, &protocol.SemanticTokensRangeParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
// any legal range. Just to exercise the call.
Range: protocol.Range{
Start: protocol.Position{
Line: 0,
Character: 0,
},
End: protocol.Position{
Line: 2,
Character: 0,
},
},
})
if err != nil {
t.Errorf("%v for Range %s", err, filename)
}
}
func (r *runner) Import(t *testing.T, spn span.Span) {
uri := spn.URI()
filename := uri.Filename()
actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
got := string(m.Content)
if len(actions) > 0 {
res, err := applyTextDocumentEdits(r, actions[0].Edit.DocumentChanges)
if err != nil {
t.Fatal(err)
}
got = res[uri]
}
want := string(r.data.Golden("goimports", filename, func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
d := myers.ComputeEdits(uri, want, got)
t.Errorf("import failed for %s: %s", filename, diff.ToUnified("want", "got", want, d))
}
}
func (r *runner) SuggestedFix(t *testing.T, spn span.Span, actionKinds []string) {
uri := spn.URI()
view, err := r.server.session.ViewOf(uri)
if err != nil {
t.Fatal(err)
}
snapshot, release := view.Snapshot(r.ctx)
defer release()
fh, err := snapshot.GetVersionedFile(r.ctx, uri)
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
rng, err := m.Range(spn)
if err != nil {
t.Fatal(err)
}
// Get the diagnostics for this view if we have not done it before.
r.collectDiagnostics(view)
var diagnostics []protocol.Diagnostic
for _, d := range r.diagnostics[uri] {
// Compare the start positions rather than the entire range because
// some diagnostics have a range with the same start and end position (8:1-8:1).
// The current marker functionality prevents us from having a range of 0 length.
if protocol.ComparePosition(d.Range.Start, rng.Start) == 0 {
diagnostics = append(diagnostics, toProtocolDiagnostics([]*source.Diagnostic{d})...)
break
}
}
codeActionKinds := []protocol.CodeActionKind{}
for _, k := range actionKinds {
codeActionKinds = append(codeActionKinds, protocol.CodeActionKind(k))
}
actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
Range: rng,
Context: protocol.CodeActionContext{
Only: codeActionKinds,
Diagnostics: diagnostics,
},
})
if err != nil {
t.Fatalf("CodeAction %s failed: %v", spn, err)
}
if len(actions) != 1 {
// Hack: We assume that we only get one code action per range.
// TODO(rstambler): Support multiple code actions per test.
t.Fatalf("unexpected number of code actions, want 1, got %v", len(actions))
}
action := actions[0]
var match bool
for _, k := range codeActionKinds {
if action.Kind == k {
match = true
break
}
}
if !match {
t.Fatalf("unexpected kind for code action %s, expected one of %v, got %v", action.Title, codeActionKinds, action.Kind)
}
var res map[span.URI]string
if cmd := action.Command; cmd != nil {
edits, err := commandToEdits(r.ctx, snapshot, fh, rng, action.Command.Command)
if err != nil {
t.Fatal(err)
}
res, err = applyTextDocumentEdits(r, edits)
if err != nil {
t.Fatal(err)
}
} else {
res, err = applyTextDocumentEdits(r, action.Edit.DocumentChanges)
if err != nil {
t.Fatal(err)
}
}
for u, got := range res {
want := string(r.data.Golden("suggestedfix_"+tests.SpanName(spn), u.Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
t.Errorf("suggested fixes failed for %s:\n%s", u.Filename(), tests.Diff(want, got))
}
}
}
func commandToEdits(ctx context.Context, snapshot source.Snapshot, fh source.VersionedFileHandle, rng protocol.Range, cmd string) ([]protocol.TextDocumentEdit, error) {
var command *source.Command
for _, c := range source.Commands {
if c.ID() == cmd {
command = c
break
}
}
if command == nil {
return nil, fmt.Errorf("no known command for %s", cmd)
}
if !command.Applies(ctx, snapshot, fh, rng) {
return nil, fmt.Errorf("cannot apply %v", command.ID())
}
return command.SuggestedFix(ctx, snapshot, fh, rng)
}
func (r *runner) FunctionExtraction(t *testing.T, start span.Span, end span.Span) {
uri := start.URI()
view, err := r.server.session.ViewOf(uri)
if err != nil {
t.Fatal(err)
}
snapshot, release := view.Snapshot(r.ctx)
defer release()
fh, err := snapshot.GetVersionedFile(r.ctx, uri)
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
spn := span.New(start.URI(), start.Start(), end.End())
rng, err := m.Range(spn)
if err != nil {
t.Fatal(err)
}
actions, err := r.server.CodeAction(r.ctx, &protocol.CodeActionParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
Range: rng,
Context: protocol.CodeActionContext{
Only: []protocol.CodeActionKind{"refactor.extract"},
},
})
if err != nil {
t.Fatal(err)
}
// Hack: We assume that we only get one code action per range.
// TODO(rstambler): Support multiple code actions per test.
if len(actions) == 0 || len(actions) > 1 {
t.Fatalf("unexpected number of code actions, want 1, got %v", len(actions))
}
edits, err := commandToEdits(r.ctx, snapshot, fh, rng, actions[0].Command.Command)
if err != nil {
t.Fatal(err)
}
res, err := applyTextDocumentEdits(r, edits)
if err != nil {
t.Fatal(err)
}
for u, got := range res {
want := string(r.data.Golden("functionextraction_"+tests.SpanName(spn), u.Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
t.Errorf("function extraction failed for %s:\n%s", u.Filename(), tests.Diff(want, got))
}
}
}
func (r *runner) Definition(t *testing.T, spn span.Span, d tests.Definition) {
sm, err := r.data.Mapper(d.Src.URI())
if err != nil {
t.Fatal(err)
}
loc, err := sm.Location(d.Src)
if err != nil {
t.Fatalf("failed for %v: %v", d.Src, err)
}
tdpp := protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
}
var locs []protocol.Location
var hover *protocol.Hover
if d.IsType {
params := &protocol.TypeDefinitionParams{
TextDocumentPositionParams: tdpp,
}
locs, err = r.server.TypeDefinition(r.ctx, params)
} else {
params := &protocol.DefinitionParams{
TextDocumentPositionParams: tdpp,
}
locs, err = r.server.Definition(r.ctx, params)
if err != nil {
t.Fatalf("failed for %v: %+v", d.Src, err)
}
v := &protocol.HoverParams{
TextDocumentPositionParams: tdpp,
}
hover, err = r.server.Hover(r.ctx, v)
}
if err != nil {
t.Fatalf("failed for %v: %v", d.Src, err)
}
if len(locs) != 1 {
t.Errorf("got %d locations for definition, expected 1", len(locs))
}
didSomething := false
if hover != nil {
didSomething = true
tag := fmt.Sprintf("%s-hover", d.Name)
expectHover := string(r.data.Golden(tag, d.Src.URI().Filename(), func() ([]byte, error) {
return []byte(hover.Contents.Value), nil
}))
if hover.Contents.Value != expectHover {
t.Errorf("%s:\n%s", d.Src, tests.Diff(expectHover, hover.Contents.Value))
}
}
if !d.OnlyHover {
didSomething = true
locURI := locs[0].URI.SpanURI()
lm, err := r.data.Mapper(locURI)
if err != nil {
t.Fatal(err)
}
if def, err := lm.Span(locs[0]); err != nil {
t.Fatalf("failed for %v: %v", locs[0], err)
} else if def != d.Def {
t.Errorf("for %v got %v want %v", d.Src, def, d.Def)
}
}
if !didSomething {
t.Errorf("no tests ran for %s", d.Src.URI())
}
}
func (r *runner) Implementation(t *testing.T, spn span.Span, impls []span.Span) {
sm, err := r.data.Mapper(spn.URI())
if err != nil {
t.Fatal(err)
}
loc, err := sm.Location(spn)
if err != nil {
t.Fatalf("failed for %v: %v", spn, err)
}
tdpp := protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
}
var locs []protocol.Location
params := &protocol.ImplementationParams{
TextDocumentPositionParams: tdpp,
}
locs, err = r.server.Implementation(r.ctx, params)
if err != nil {
t.Fatalf("failed for %v: %v", spn, err)
}
if len(locs) != len(impls) {
t.Fatalf("got %d locations for implementation, expected %d", len(locs), len(impls))
}
var results []span.Span
for i := range locs {
locURI := locs[i].URI.SpanURI()
lm, err := r.data.Mapper(locURI)
if err != nil {
t.Fatal(err)
}
imp, err := lm.Span(locs[i])
if err != nil {
t.Fatalf("failed for %v: %v", locs[i], err)
}
results = append(results, imp)
}
// Sort results and expected to make tests deterministic.
sort.SliceStable(results, func(i, j int) bool {
return span.Compare(results[i], results[j]) == -1
})
sort.SliceStable(impls, func(i, j int) bool {
return span.Compare(impls[i], impls[j]) == -1
})
for i := range results {
if results[i] != impls[i] {
t.Errorf("for %dth implementation of %v got %v want %v", i, spn, results[i], impls[i])
}
}
}
func (r *runner) Highlight(t *testing.T, src span.Span, locations []span.Span) {
m, err := r.data.Mapper(src.URI())
if err != nil {
t.Fatal(err)
}
loc, err := m.Location(src)
if err != nil {
t.Fatalf("failed for %v: %v", locations[0], err)
}
tdpp := protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
}
params := &protocol.DocumentHighlightParams{
TextDocumentPositionParams: tdpp,
}
highlights, err := r.server.DocumentHighlight(r.ctx, params)
if err != nil {
t.Fatal(err)
}
if len(highlights) != len(locations) {
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))
}
// Check to make sure highlights have a valid range.
var results []span.Span
for i := range highlights {
h, err := m.RangeSpan(highlights[i].Range)
if err != nil {
t.Fatalf("failed for %v: %v", highlights[i], err)
}
results = append(results, h)
}
// Sort results to make tests deterministic since DocumentHighlight uses a map.
sort.SliceStable(results, func(i, j int) bool {
return span.Compare(results[i], results[j]) == -1
})
// Check to make sure all the expected highlights are found.
for i := range results {
if results[i] != locations[i] {
t.Errorf("want %v, got %v\n", locations[i], results[i])
}
}
}
func (r *runner) References(t *testing.T, src span.Span, itemList []span.Span) {
sm, err := r.data.Mapper(src.URI())
if err != nil {
t.Fatal(err)
}
loc, err := sm.Location(src)
if err != nil {
t.Fatalf("failed for %v: %v", src, err)
}
for _, includeDeclaration := range []bool{true, false} {
t.Run(fmt.Sprintf("refs-declaration-%v", includeDeclaration), func(t *testing.T) {
want := make(map[protocol.Location]bool)
for i, pos := range itemList {
// We don't want the first result if we aren't including the declaration.
if i == 0 && !includeDeclaration {
continue
}
m, err := r.data.Mapper(pos.URI())
if err != nil {
t.Fatal(err)
}
loc, err := m.Location(pos)
if err != nil {
t.Fatalf("failed for %v: %v", src, err)
}
want[loc] = true
}
params := &protocol.ReferenceParams{
TextDocumentPositionParams: protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
},
Context: protocol.ReferenceContext{
IncludeDeclaration: includeDeclaration,
},
}
got, err := r.server.References(r.ctx, params)
if err != nil {
t.Fatalf("failed for %v: %v", src, err)
}
if len(got) != len(want) {
t.Errorf("references failed: different lengths got %v want %v", len(got), len(want))
}
for _, loc := range got {
if !want[loc] {
t.Errorf("references failed: incorrect references got %v want %v", loc, want)
}
}
})
}
}
func (r *runner) Rename(t *testing.T, spn span.Span, newText string) {
tag := fmt.Sprintf("%s-rename", newText)
uri := spn.URI()
filename := uri.Filename()
sm, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
loc, err := sm.Location(spn)
if err != nil {
t.Fatalf("failed for %v: %v", spn, err)
}
wedit, err := r.server.Rename(r.ctx, &protocol.RenameParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
Position: loc.Range.Start,
NewName: newText,
})
if err != nil {
renamed := string(r.data.Golden(tag, filename, func() ([]byte, error) {
return []byte(err.Error()), nil
}))
if err.Error() != renamed {
t.Errorf("rename failed for %s, expected:\n%v\ngot:\n%v\n", newText, renamed, err)
}
return
}
res, err := applyTextDocumentEdits(r, wedit.DocumentChanges)
if err != nil {
t.Fatal(err)
}
var orderedURIs []string
for uri := range res {
orderedURIs = append(orderedURIs, string(uri))
}
sort.Strings(orderedURIs)
var got string
for i := 0; i < len(res); i++ {
if i != 0 {
got += "\n"
}
uri := span.URIFromURI(orderedURIs[i])
if len(res) > 1 {
got += filepath.Base(uri.Filename()) + ":\n"
}
val := res[uri]
got += val
}
want := string(r.data.Golden(tag, filename, func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
t.Errorf("rename failed for %s:\n%s", newText, tests.Diff(want, got))
}
}
func (r *runner) PrepareRename(t *testing.T, src span.Span, want *source.PrepareItem) {
m, err := r.data.Mapper(src.URI())
if err != nil {
t.Fatal(err)
}
loc, err := m.Location(src)
if err != nil {
t.Fatalf("failed for %v: %v", src, err)
}
tdpp := protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{URI: loc.URI},
Position: loc.Range.Start,
}
params := &protocol.PrepareRenameParams{
TextDocumentPositionParams: tdpp,
}
got, err := r.server.PrepareRename(context.Background(), params)
if err != nil {
t.Errorf("prepare rename failed for %v: got error: %v", src, err)
return
}
// we all love typed nils
if got == nil {
if want.Text != "" { // expected an ident.
t.Errorf("prepare rename failed for %v: got nil", src)
}
return
}
if got.Start == got.End {
// Special case for 0-length ranges. Marks can't specify a 0-length range,
// so just compare the start.
if got.Start != want.Range.Start {
t.Errorf("prepare rename failed: incorrect point, got %v want %v", got.Start, want.Range.Start)
}
} else {
if protocol.CompareRange(*got, want.Range) != 0 {
t.Errorf("prepare rename failed: incorrect range got %v want %v", *got, want.Range)
}
}
}
func applyTextDocumentEdits(r *runner, edits []protocol.TextDocumentEdit) (map[span.URI]string, error) {
res := map[span.URI]string{}
for _, docEdits := range edits {
uri := docEdits.TextDocument.URI.SpanURI()
var m *protocol.ColumnMapper
// If we have already edited this file, we use the edited version (rather than the
// file in its original state) so that we preserve our initial changes.
if content, ok := res[uri]; ok {
m = &protocol.ColumnMapper{
URI: uri,
Converter: span.NewContentConverter(
uri.Filename(), []byte(content)),
Content: []byte(content),
}
} else {
var err error
if m, err = r.data.Mapper(uri); err != nil {
return nil, err
}
}
res[uri] = string(m.Content)
sedits, err := source.FromProtocolEdits(m, docEdits.Edits)
if err != nil {
return nil, err
}
res[uri] = applyEdits(res[uri], sedits)
}
return res, nil
}
func applyEdits(contents string, edits []diff.TextEdit) string {
res := contents
// Apply the edits from the end of the file forward
// to preserve the offsets
for i := len(edits) - 1; i >= 0; i-- {
edit := edits[i]
start := edit.Span.Start().Offset()
end := edit.Span.End().Offset()
tmp := res[0:start] + edit.NewText
res = tmp + res[end:]
}
return res
}
func (r *runner) Symbols(t *testing.T, uri span.URI, expectedSymbols []protocol.DocumentSymbol) {
params := &protocol.DocumentSymbolParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
}
got, err := r.server.DocumentSymbol(r.ctx, params)
if err != nil {
t.Fatal(err)
}
if len(got) != len(expectedSymbols) {
t.Errorf("want %d top-level symbols in %v, got %d", len(expectedSymbols), uri, len(got))
return
}
symbols := make([]protocol.DocumentSymbol, len(got))
for i, s := range got {
s, ok := s.(protocol.DocumentSymbol)
if !ok {
t.Fatalf("%v: wanted []DocumentSymbols but got %v", uri, got)
}
symbols[i] = s
}
if diff := tests.DiffSymbols(t, uri, expectedSymbols, symbols); diff != "" {
t.Error(diff)
}
}
func (r *runner) WorkspaceSymbols(t *testing.T, query string, expectedSymbols []protocol.SymbolInformation, dirs map[string]struct{}) {
r.callWorkspaceSymbols(t, query, source.SymbolCaseInsensitive, dirs, expectedSymbols)
}
func (r *runner) FuzzyWorkspaceSymbols(t *testing.T, query string, expectedSymbols []protocol.SymbolInformation, dirs map[string]struct{}) {
r.callWorkspaceSymbols(t, query, source.SymbolFuzzy, dirs, expectedSymbols)
}
func (r *runner) CaseSensitiveWorkspaceSymbols(t *testing.T, query string, expectedSymbols []protocol.SymbolInformation, dirs map[string]struct{}) {
r.callWorkspaceSymbols(t, query, source.SymbolCaseSensitive, dirs, expectedSymbols)
}
func (r *runner) callWorkspaceSymbols(t *testing.T, query string, matcher source.SymbolMatcher, dirs map[string]struct{}, expectedSymbols []protocol.SymbolInformation) {
t.Helper()
original := r.server.session.Options()
modified := original
modified.SymbolMatcher = matcher
r.server.session.SetOptions(modified)
defer r.server.session.SetOptions(original)
params := &protocol.WorkspaceSymbolParams{
Query: query,
}
got, err := r.server.Symbol(r.ctx, params)
if err != nil {
t.Fatal(err)
}
got = tests.FilterWorkspaceSymbols(got, dirs)
if diff := tests.DiffWorkspaceSymbols(expectedSymbols, got); diff != "" {
t.Error(diff)
}
}
func (r *runner) SignatureHelp(t *testing.T, spn span.Span, want *protocol.SignatureHelp) {
m, err := r.data.Mapper(spn.URI())
if err != nil {
t.Fatal(err)
}
loc, err := m.Location(spn)
if err != nil {
t.Fatalf("failed for %v: %v", loc, err)
}
tdpp := protocol.TextDocumentPositionParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(spn.URI()),
},
Position: loc.Range.Start,
}
params := &protocol.SignatureHelpParams{
TextDocumentPositionParams: tdpp,
}
got, err := r.server.SignatureHelp(r.ctx, params)
if err != nil {
// Only fail if we got an error we did not expect.
if want != nil {
t.Fatal(err)
}
return
}
if want == nil {
if got != nil {
t.Errorf("expected no signature, got %v", got)
}
return
}
if got == nil {
t.Fatalf("expected %v, got nil", want)
}
if diff := tests.DiffSignatures(spn, want, got); diff != "" {
t.Error(diff)
}
}
func (r *runner) Link(t *testing.T, uri span.URI, wantLinks []tests.Link) {
m, err := r.data.Mapper(uri)
if err != nil {
t.Fatal(err)
}
got, err := r.server.DocumentLink(r.ctx, &protocol.DocumentLinkParams{
TextDocument: protocol.TextDocumentIdentifier{
URI: protocol.URIFromSpanURI(uri),
},
})
if err != nil {
t.Fatal(err)
}
if diff := tests.DiffLinks(m, wantLinks, got); diff != "" {
t.Error(diff)
}
}
func TestBytesOffset(t *testing.T) {
tests := []struct {
text string
pos protocol.Position
want int
}{
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 0}, want: 0},
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 1}, want: 1},
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 2}, want: 1},
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 3}, want: 5},
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 4}, want: 6},
{text: `a𐐀b`, pos: protocol.Position{Line: 0, Character: 5}, want: -1},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 0, Character: 3}, want: 3},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 0, Character: 4}, want: 3},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 0}, want: 4},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 3}, want: 7},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 1, Character: 4}, want: 7},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 2, Character: 0}, want: 8},
{text: "aaa\nbbb\n", pos: protocol.Position{Line: 2, Character: 1}, want: -1},
{text: "aaa\nbbb\n\n", pos: protocol.Position{Line: 2, Character: 0}, want: 8},
}
for i, test := range tests {
fname := fmt.Sprintf("test %d", i)
fset := token.NewFileSet()
f := fset.AddFile(fname, -1, len(test.text))
f.SetLinesForContent([]byte(test.text))
uri := span.URIFromPath(fname)
converter := span.NewContentConverter(fname, []byte(test.text))
mapper := &protocol.ColumnMapper{
URI: uri,
Converter: converter,
Content: []byte(test.text),
}
got, err := mapper.Point(test.pos)
if err != nil && test.want != -1 {
t.Errorf("unexpected error: %v", err)
}
if err == nil && got.Offset() != test.want {
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())
}
}
}
func (r *runner) collectDiagnostics(view source.View) {
if r.diagnostics != nil {
return
}
r.diagnostics = make(map[span.URI][]*source.Diagnostic)
snapshot, release := view.Snapshot(r.ctx)
defer release()
// Always run diagnostics with analysis.
r.server.diagnose(r.ctx, snapshot, true)
for uri, reports := range r.server.diagnostics {
var diagnostics []*source.Diagnostic
for _, report := range reports.reports {
for _, d := range report.diags {
diagnostics = append(diagnostics, &source.Diagnostic{
Range: d.Range,
Message: d.Message,
Related: d.Related,
Severity: d.Severity,
Source: d.Source,
Tags: d.Tags,
})
}
r.diagnostics[uri] = diagnostics
}
}
}