blob: b16dceeaf30025bd3e8b7b7ac3aaf1abc438d716 [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 source_test
import (
"context"
"fmt"
"os"
"os/exec"
"path/filepath"
"sort"
"strings"
"testing"
"golang.org/x/tools/go/packages/packagestest"
"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/fuzzy"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/lsp/source/completion"
"golang.org/x/tools/internal/lsp/tests"
"golang.org/x/tools/internal/span"
"golang.org/x/tools/internal/testenv"
errors "golang.org/x/xerrors"
)
func TestMain(m *testing.M) {
testenv.ExitIfSmallMachine()
os.Exit(m.Run())
}
func TestSource(t *testing.T) {
packagestest.TestAll(t, testSource)
}
type runner struct {
snapshot source.Snapshot
view source.View
data *tests.Data
ctx context.Context
}
func testSource(t *testing.T, exporter packagestest.Exporter) {
ctx := tests.Context(t)
data := tests.Load(t, exporter, "../testdata")
for _, datum := range data {
defer datum.Exported.Cleanup()
cache := cache.New(ctx, nil)
session := cache.NewSession(ctx)
options := tests.DefaultOptions()
options.Env = datum.Config.Env
view, _, release, err := session.NewView(ctx, "source_test", span.URIFromPath(datum.Config.Dir), options)
release()
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)
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)
}
snapshot, release := view.Snapshot(ctx)
defer release()
r := &runner{
view: view,
snapshot: snapshot,
data: datum,
ctx: ctx,
}
t.Run(tests.FormatFolderName(datum.Folder), func(t *testing.T) {
t.Helper()
tests.Run(t, r, datum)
})
}
}
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)
}
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
items, err := source.PrepareCallHierarchy(r.ctx, r.snapshot, fh, loc.Range.Start)
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 source.PrepareCallHierarchy to return identifier at %v but got %v\n", loc, callLocation)
}
incomingCalls, err := source.IncomingCalls(r.ctx, r.snapshot, fh, loc.Range.Start)
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 differ: %s", msg))
}
outgoingCalls, err := source.OutgoingCalls(r.ctx, r.snapshot, fh, loc.Range.Start)
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 differ: %s", msg))
}
}
func (r *runner) Diagnostics(t *testing.T, uri span.URI, want []*source.Diagnostic) {
fileID, got, err := source.FileDiagnostics(r.ctx, r.snapshot, uri)
if err != nil {
t.Fatal(err)
}
// 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(fileID.URI, want, got); diff != "" {
t.Error(diff)
}
}
func (r *runner) Completion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
_, got := r.callCompletion(t, src, func(opts *source.Options) {
opts.Matcher = source.CaseInsensitive
opts.DeepCompletion = false
opts.UnimportedCompletion = false
opts.InsertTextFormat = protocol.SnippetTextFormat
if !strings.Contains(string(src.URI()), "literal") {
opts.LiteralCompletions = false
}
})
got = tests.FilterBuiltins(src, got)
if diff := tests.DiffCompletionItems(want, got); diff != "" {
t.Errorf("%s: %s", src, diff)
}
}
func (r *runner) CompletionSnippet(t *testing.T, src span.Span, expected tests.CompletionSnippet, placeholders bool, items tests.CompletionItems) {
_, list := r.callCompletion(t, src, func(opts *source.Options) {
opts.Placeholders = placeholders
opts.DeepCompletion = true
opts.UnimportedCompletion = false
})
got := tests.FindItem(list, *items[expected.CompletionItem])
want := expected.PlainSnippet
if placeholders {
want = expected.PlaceholderSnippet
}
if diff := tests.DiffSnippets(want, got); diff != "" {
t.Errorf("%s: %s", src, diff)
}
}
func (r *runner) UnimportedCompletion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
_, got := r.callCompletion(t, src, func(opts *source.Options) {})
got = tests.FilterBuiltins(src, got)
if diff := tests.CheckCompletionOrder(want, got, false); diff != "" {
t.Errorf("%s: %s", src, diff)
}
}
func (r *runner) DeepCompletion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
prefix, list := r.callCompletion(t, src, func(opts *source.Options) {
opts.DeepCompletion = true
opts.Matcher = source.CaseInsensitive
opts.UnimportedCompletion = false
})
list = tests.FilterBuiltins(src, list)
fuzzyMatcher := fuzzy.NewMatcher(prefix)
var got []protocol.CompletionItem
for _, item := range list {
if fuzzyMatcher.Score(item.Label) <= 0 {
continue
}
got = append(got, item)
}
if msg := tests.DiffCompletionItems(want, got); msg != "" {
t.Errorf("%s: %s", src, msg)
}
}
func (r *runner) FuzzyCompletion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
_, got := r.callCompletion(t, src, func(opts *source.Options) {
opts.DeepCompletion = true
opts.Matcher = source.Fuzzy
opts.UnimportedCompletion = false
})
got = tests.FilterBuiltins(src, got)
if msg := tests.DiffCompletionItems(want, got); msg != "" {
t.Errorf("%s: %s", src, msg)
}
}
func (r *runner) CaseSensitiveCompletion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
_, list := r.callCompletion(t, src, func(opts *source.Options) {
opts.Matcher = source.CaseSensitive
opts.UnimportedCompletion = false
})
list = tests.FilterBuiltins(src, list)
if diff := tests.DiffCompletionItems(want, list); diff != "" {
t.Errorf("%s: %s", src, diff)
}
}
func (r *runner) RankCompletion(t *testing.T, src span.Span, test tests.Completion, items tests.CompletionItems) {
var want []protocol.CompletionItem
for _, pos := range test.CompletionItems {
want = append(want, tests.ToProtocolCompletionItem(*items[pos]))
}
_, got := r.callCompletion(t, src, func(opts *source.Options) {
opts.DeepCompletion = true
opts.Matcher = source.Fuzzy
})
if msg := tests.CheckCompletionOrder(want, got, true); msg != "" {
t.Errorf("%s: %s", src, msg)
}
}
func (r *runner) callCompletion(t *testing.T, src span.Span, options func(*source.Options)) (string, []protocol.CompletionItem) {
fh, err := r.snapshot.GetFile(r.ctx, src.URI())
if err != nil {
t.Fatal(err)
}
original := r.view.Options()
modified := original
options(&modified)
newView, err := r.view.SetOptions(r.ctx, modified)
if newView != r.view {
t.Fatalf("options change unexpectedly created new view")
}
if err != nil {
t.Fatal(err)
}
defer r.view.SetOptions(r.ctx, original)
list, surrounding, err := completion.Completion(r.ctx, r.snapshot, fh, protocol.Position{
Line: float64(src.Start().Line() - 1),
Character: float64(src.Start().Column() - 1),
}, "")
if err != nil && !errors.As(err, &completion.ErrIsDefinition{}) {
t.Fatalf("failed for %v: %v", src, err)
}
var prefix string
if surrounding != nil {
prefix = strings.ToLower(surrounding.Prefix())
}
var numDeepCompletionsSeen int
var items []completion.CompletionItem
// Apply deep completion filtering.
for _, item := range list {
if item.Depth > 0 {
if !modified.DeepCompletion {
continue
}
if numDeepCompletionsSeen >= completion.MaxDeepCompletions {
continue
}
numDeepCompletionsSeen++
}
items = append(items, item)
}
return prefix, tests.ToProtocolCompletionItems(items)
}
func (r *runner) FoldingRanges(t *testing.T, spn span.Span) {
uri := spn.URI()
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
data, err := fh.Read()
if err != nil {
t.Error(err)
return
}
// Test all folding ranges.
ranges, err := source.FoldingRange(r.ctx, r.snapshot, fh, false)
if err != nil {
t.Error(err)
return
}
r.foldingRanges(t, "foldingRange", uri, string(data), ranges)
// Test folding ranges with lineFoldingOnly
ranges, err = source.FoldingRange(r.ctx, r.snapshot, fh, true)
if err != nil {
t.Error(err)
return
}
r.foldingRanges(t, "foldingRange-lineFolding", uri, string(data), ranges)
}
func (r *runner) foldingRanges(t *testing.T, prefix string, uri span.URI, data string, ranges []*source.FoldingRangeInfo) {
t.Helper()
// Fold all ranges.
nonOverlapping := nonOverlappingRanges(t, ranges)
for i, rngs := range nonOverlapping {
got, err := foldRanges(string(data), 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 []*source.FoldingRangeInfo
for _, fRng := range ranges {
if fRng.Kind == kind {
kindOnly = append(kindOnly, fRng)
}
}
nonOverlapping := nonOverlappingRanges(t, kindOnly)
for i, rngs := range nonOverlapping {
got, err := foldRanges(string(data), 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: failed for %s, expected:\n%v\ngot:\n%v", tag, uri.Filename(), want, got)
}
}
}
}
func nonOverlappingRanges(t *testing.T, ranges []*source.FoldingRangeInfo) (res [][]*source.FoldingRangeInfo) {
for _, fRng := range ranges {
setNum := len(res)
for i := 0; i < len(res); i++ {
canInsert := true
for _, rng := range res[i] {
if conflict(t, rng, fRng) {
canInsert = false
break
}
}
if canInsert {
setNum = i
break
}
}
if setNum == len(res) {
res = append(res, []*source.FoldingRangeInfo{})
}
res[setNum] = append(res[setNum], fRng)
}
return res
}
func conflict(t *testing.T, a, b *source.FoldingRangeInfo) bool {
arng, err := a.Range()
if err != nil {
t.Fatal(err)
}
brng, err := b.Range()
if err != nil {
t.Fatal(err)
}
// a start position is <= b start positions
return protocol.ComparePosition(arng.Start, brng.Start) <= 0 && protocol.ComparePosition(arng.End, brng.Start) > 0
}
func foldRanges(contents string, ranges []*source.FoldingRangeInfo) (string, error) {
foldedText := "<>"
res := contents
// Apply the folds from the end of the file forward
// to preserve the offsets.
for i := len(ranges) - 1; i >= 0; i-- {
fRange := ranges[i]
spn, err := fRange.Span()
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) {
gofmted := string(r.data.Golden("gofmt", spn.URI().Filename(), func() ([]byte, error) {
cmd := exec.Command("gofmt", spn.URI().Filename())
out, _ := cmd.Output() // ignore error, sometimes we have intentionally ungofmt-able files
return out, nil
}))
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
edits, err := source.Format(r.ctx, r.snapshot, fh)
if err != nil {
if gofmted != "" {
t.Error(err)
}
return
}
data, err := fh.Read()
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(spn.URI())
if err != nil {
t.Fatal(err)
}
diffEdits, err := source.FromProtocolEdits(m, edits)
if err != nil {
t.Error(err)
}
got := diff.ApplyEdits(string(data), diffEdits)
if gofmted != got {
t.Errorf("format failed for %s, expected:\n%v\ngot:\n%v", spn.URI().Filename(), gofmted, got)
}
}
func (r *runner) Import(t *testing.T, spn span.Span) {
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
edits, _, err := source.AllImportsFixes(r.ctx, r.snapshot, fh)
if err != nil {
t.Error(err)
}
data, err := fh.Read()
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(fh.URI())
if err != nil {
t.Fatal(err)
}
diffEdits, err := source.FromProtocolEdits(m, edits)
if err != nil {
t.Error(err)
}
got := diff.ApplyEdits(string(data), diffEdits)
want := string(r.data.Golden("goimports", spn.URI().Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if want != got {
d := myers.ComputeEdits(spn.URI(), want, got)
t.Errorf("import failed for %s: %s", spn.URI().Filename(), diff.ToUnified("want", "got", want, d))
}
}
func (r *runner) Definition(t *testing.T, spn span.Span, d tests.Definition) {
_, srcRng, err := spanToRange(r.data, d.Src)
if err != nil {
t.Fatal(err)
}
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
ident, err := source.Identifier(r.ctx, r.snapshot, fh, srcRng.Start)
if err != nil {
t.Fatalf("failed for %v: %v", d.Src, err)
}
h, err := source.HoverIdentifier(r.ctx, ident)
if err != nil {
t.Fatalf("failed for %v: %v", d.Src, err)
}
hover, err := source.FormatHover(h, r.view.Options())
if err != nil {
t.Fatal(err)
}
rng, err := ident.Declaration.MappedRange[0].Range()
if err != nil {
t.Fatal(err)
}
if d.IsType {
rng, err = ident.Type.Range()
if err != nil {
t.Fatal(err)
}
hover = ""
}
didSomething := false
if hover != "" {
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), nil
}))
if hover != expectHover {
t.Errorf("hover for %s failed:\n%s", d.Src, tests.Diff(expectHover, hover))
}
}
if !d.OnlyHover {
didSomething = true
if _, defRng, err := spanToRange(r.data, d.Def); err != nil {
t.Fatal(err)
} else if rng != defRng {
t.Errorf("for %v got %v want %v", d.Src, rng, defRng)
}
}
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)
}
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
locs, err := source.Implementation(r.ctx, r.snapshot, fh, loc.Range.Start)
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) {
ctx := r.ctx
m, srcRng, err := spanToRange(r.data, src)
if err != nil {
t.Fatal(err)
}
fh, err := r.snapshot.GetFile(r.ctx, src.URI())
if err != nil {
t.Fatal(err)
}
highlights, err := source.Highlight(ctx, r.snapshot, fh, srcRng.Start)
if err != nil {
t.Errorf("highlight failed for %s: %v", src.URI(), 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])
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) {
ctx := r.ctx
_, srcRng, err := spanToRange(r.data, src)
if err != nil {
t.Fatal(err)
}
snapshot := r.snapshot
fh, err := snapshot.GetFile(r.ctx, src.URI())
if err != nil {
t.Fatal(err)
}
for _, includeDeclaration := range []bool{true, false} {
t.Run(fmt.Sprintf("refs-declaration-%v", includeDeclaration), func(t *testing.T) {
want := make(map[span.Span]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
}
want[pos] = true
}
refs, err := source.References(ctx, snapshot, fh, srcRng.Start, includeDeclaration)
if err != nil {
t.Fatalf("failed for %s: %v", src, err)
}
got := make(map[span.Span]bool)
for _, refInfo := range refs {
refSpan, err := refInfo.Span()
if err != nil {
t.Fatal(err)
}
got[refSpan] = true
}
if len(got) != len(want) {
t.Errorf("references failed: different lengths got %v want %v", len(got), len(want))
}
for spn := range got {
if !want[spn] {
t.Errorf("references failed: incorrect references got %v want locations %v", got, want)
}
}
})
}
}
func (r *runner) Rename(t *testing.T, spn span.Span, newText string) {
tag := fmt.Sprintf("%s-rename", newText)
_, srcRng, err := spanToRange(r.data, spn)
if err != nil {
t.Fatal(err)
}
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
changes, err := source.Rename(r.ctx, r.snapshot, fh, srcRng.Start, newText)
if err != nil {
renamed := string(r.data.Golden(tag, spn.URI().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
}
var res []string
for editURI, edits := range changes {
fh, err := r.snapshot.GetFile(r.ctx, editURI)
if err != nil {
t.Fatal(err)
}
data, err := fh.Read()
if err != nil {
t.Fatal(err)
}
m, err := r.data.Mapper(fh.URI())
if err != nil {
t.Fatal(err)
}
diffEdits, err := source.FromProtocolEdits(m, edits)
if err != nil {
t.Fatal(err)
}
contents := applyEdits(string(data), diffEdits)
if len(changes) > 1 {
filename := filepath.Base(editURI.Filename())
contents = fmt.Sprintf("%s:\n%s", filename, contents)
}
res = append(res, contents)
}
// Sort on filename
sort.Strings(res)
var got string
for i, val := range res {
if i != 0 {
got += "\n"
}
got += val
}
renamed := string(r.data.Golden(tag, spn.URI().Filename(), func() ([]byte, error) {
return []byte(got), nil
}))
if renamed != got {
t.Errorf("rename failed for %s, expected:\n%v\ngot:\n%v", newText, renamed, got)
}
}
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) PrepareRename(t *testing.T, src span.Span, want *source.PrepareItem) {
_, srcRng, err := spanToRange(r.data, src)
if err != nil {
t.Fatal(err)
}
// Find the identifier at the position.
fh, err := r.snapshot.GetFile(r.ctx, src.URI())
if err != nil {
t.Fatal(err)
}
item, err := source.PrepareRename(r.ctx, r.snapshot, fh, srcRng.Start)
if err != nil {
if want.Text != "" { // expected an ident.
t.Errorf("prepare rename failed for %v: got error: %v", src, err)
}
return
}
if item == nil {
if want.Text != "" {
t.Errorf("prepare rename failed for %v: got nil", src)
}
return
}
if want.Text == "" {
t.Errorf("prepare rename failed for %v: expected nil, got %v", src, item)
return
}
if item.Range.Start == item.Range.End {
// Special case for 0-length ranges. Marks can't specify a 0-length range,
// so just compare the start.
if item.Range.Start != want.Range.Start {
t.Errorf("prepare rename failed: incorrect point, got %v want %v", item.Range.Start, want.Range.Start)
}
} else {
if protocol.CompareRange(item.Range, want.Range) != 0 {
t.Errorf("prepare rename failed: incorrect range got %v want %v", item.Range, want.Range)
}
}
}
func (r *runner) Symbols(t *testing.T, uri span.URI, expectedSymbols []protocol.DocumentSymbol) {
fh, err := r.snapshot.GetFile(r.ctx, uri)
if err != nil {
t.Fatal(err)
}
symbols, err := source.DocumentSymbols(r.ctx, r.snapshot, fh)
if err != nil {
t.Errorf("symbols failed for %s: %v", uri, err)
}
if len(symbols) != len(expectedSymbols) {
t.Errorf("want %d top-level symbols in %v, got %d", len(expectedSymbols), uri, len(symbols))
return
}
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()
got, err := source.WorkspaceSymbols(r.ctx, matcher, source.PackageQualifiedSymbols, []source.View{r.view}, query)
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) {
_, rng, err := spanToRange(r.data, spn)
if err != nil {
t.Fatal(err)
}
fh, err := r.snapshot.GetFile(r.ctx, spn.URI())
if err != nil {
t.Fatal(err)
}
gotSignature, gotActiveParameter, err := source.SignatureHelp(r.ctx, r.snapshot, fh, rng.Start)
if err != nil {
// Only fail if we got an error we did not expect.
if want != nil {
t.Fatalf("failed for %v: %v", spn, err)
}
return
}
if gotSignature == nil {
if want != nil {
t.Fatalf("got nil signature, but expected %v", want)
}
return
}
got := &protocol.SignatureHelp{
Signatures: []protocol.SignatureInformation{*gotSignature},
ActiveParameter: float64(gotActiveParameter),
}
if diff := tests.DiffSignatures(spn, want, got); diff != "" {
t.Error(diff)
}
}
// These are pure LSP features, no source level functionality to be tested.
func (r *runner) Link(t *testing.T, uri span.URI, wantLinks []tests.Link) {}
func (r *runner) SuggestedFix(t *testing.T, spn span.Span, actionKinds []string) {}
func (r *runner) FunctionExtraction(t *testing.T, start span.Span, end span.Span) {}
func (r *runner) CodeLens(t *testing.T, uri span.URI, want []protocol.CodeLens) {}
func spanToRange(data *tests.Data, spn span.Span) (*protocol.ColumnMapper, protocol.Range, error) {
m, err := data.Mapper(spn.URI())
if err != nil {
return nil, protocol.Range{}, err
}
srcRng, err := m.Range(spn)
if err != nil {
return nil, protocol.Range{}, err
}
return m, srcRng, nil
}