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// Copyright 2020 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 regtest
import (
"io"
"testing"
"golang.org/x/tools/internal/lsp/fake"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
errors "golang.org/x/xerrors"
)
func (e *Env) ChangeFilesOnDisk(events []fake.FileEvent) {
e.T.Helper()
if err := e.Sandbox.Workdir.ChangeFilesOnDisk(e.Ctx, events); err != nil {
e.T.Fatal(err)
}
}
// RemoveWorkspaceFile deletes a file on disk but does nothing in the
// editor. It calls t.Fatal on any error.
func (e *Env) RemoveWorkspaceFile(name string) {
e.T.Helper()
if err := e.Sandbox.Workdir.RemoveFile(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// ReadWorkspaceFile reads a file from the workspace, calling t.Fatal on any
// error.
func (e *Env) ReadWorkspaceFile(name string) string {
e.T.Helper()
content, err := e.Sandbox.Workdir.ReadFile(name)
if err != nil {
e.T.Fatal(err)
}
return content
}
// WriteWorkspaceFile writes a file to disk but does nothing in the editor.
// It calls t.Fatal on any error.
func (e *Env) WriteWorkspaceFile(name, content string) {
e.T.Helper()
if err := e.Sandbox.Workdir.WriteFile(e.Ctx, name, content); err != nil {
e.T.Fatal(err)
}
}
// WriteWorkspaceFiles deletes a file on disk but does nothing in the
// editor. It calls t.Fatal on any error.
func (e *Env) WriteWorkspaceFiles(files map[string]string) {
e.T.Helper()
if err := e.Sandbox.Workdir.WriteFiles(e.Ctx, files); err != nil {
e.T.Fatal(err)
}
}
// OpenFile opens a file in the editor, calling t.Fatal on any error.
func (e *Env) OpenFile(name string) {
e.T.Helper()
if err := e.Editor.OpenFile(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// CreateBuffer creates a buffer in the editor, calling t.Fatal on any error.
func (e *Env) CreateBuffer(name string, content string) {
e.T.Helper()
if err := e.Editor.CreateBuffer(e.Ctx, name, content); err != nil {
e.T.Fatal(err)
}
}
// CloseBuffer closes an editor buffer without saving, calling t.Fatal on any
// error.
func (e *Env) CloseBuffer(name string) {
e.T.Helper()
if err := e.Editor.CloseBuffer(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// EditBuffer applies edits to an editor buffer, calling t.Fatal on any error.
func (e *Env) EditBuffer(name string, edits ...fake.Edit) {
e.T.Helper()
if err := e.Editor.EditBuffer(e.Ctx, name, edits); err != nil {
e.T.Fatal(err)
}
}
func (e *Env) SetBufferContent(name string, content string) {
e.T.Helper()
if err := e.Editor.SetBufferContent(e.Ctx, name, content); err != nil {
e.T.Fatal(err)
}
}
// RegexpRange returns the range of the first match for re in the buffer
// specified by name, calling t.Fatal on any error. It first searches for the
// position in open buffers, then in workspace files.
func (e *Env) RegexpRange(name, re string) (fake.Pos, fake.Pos) {
e.T.Helper()
start, end, err := e.Editor.RegexpRange(name, re)
if err == fake.ErrUnknownBuffer {
start, end, err = e.Sandbox.Workdir.RegexpRange(name, re)
}
if err != nil {
e.T.Fatalf("RegexpRange: %v, %v", name, err)
}
return start, end
}
// RegexpSearch returns the starting position of the first match for re in the
// buffer specified by name, calling t.Fatal on any error. It first searches
// for the position in open buffers, then in workspace files.
func (e *Env) RegexpSearch(name, re string) fake.Pos {
e.T.Helper()
pos, err := e.Editor.RegexpSearch(name, re)
if err == fake.ErrUnknownBuffer {
pos, err = e.Sandbox.Workdir.RegexpSearch(name, re)
}
if err != nil {
e.T.Fatalf("RegexpSearch: %v, %v", name, err)
}
return pos
}
// RegexpReplace replaces the first group in the first match of regexpStr with
// the replace text, calling t.Fatal on any error.
func (e *Env) RegexpReplace(name, regexpStr, replace string) {
e.T.Helper()
if err := e.Editor.RegexpReplace(e.Ctx, name, regexpStr, replace); err != nil {
e.T.Fatalf("RegexpReplace: %v", err)
}
}
// SaveBuffer saves an editor buffer, calling t.Fatal on any error.
func (e *Env) SaveBuffer(name string) {
e.T.Helper()
if err := e.Editor.SaveBuffer(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// GoToDefinition goes to definition in the editor, calling t.Fatal on any
// error.
func (e *Env) GoToDefinition(name string, pos fake.Pos) (string, fake.Pos) {
e.T.Helper()
n, p, err := e.Editor.GoToDefinition(e.Ctx, name, pos)
if err != nil {
e.T.Fatal(err)
}
return n, p
}
// Symbol returns symbols matching query
func (e *Env) Symbol(query string) []fake.SymbolInformation {
e.T.Helper()
r, err := e.Editor.Symbol(e.Ctx, query)
if err != nil {
e.T.Fatal(err)
}
return r
}
// FormatBuffer formats the editor buffer, calling t.Fatal on any error.
func (e *Env) FormatBuffer(name string) {
e.T.Helper()
if err := e.Editor.FormatBuffer(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// OrganizeImports processes the source.organizeImports codeAction, calling
// t.Fatal on any error.
func (e *Env) OrganizeImports(name string) {
e.T.Helper()
if err := e.Editor.OrganizeImports(e.Ctx, name); err != nil {
e.T.Fatal(err)
}
}
// ApplyQuickFixes processes the quickfix codeAction, calling t.Fatal on any error.
func (e *Env) ApplyQuickFixes(path string, diagnostics []protocol.Diagnostic) {
e.T.Helper()
if err := e.Editor.ApplyQuickFixes(e.Ctx, path, nil, diagnostics); err != nil {
e.T.Fatal(err)
}
}
// Hover in the editor, calling t.Fatal on any error.
func (e *Env) Hover(name string, pos fake.Pos) (*protocol.MarkupContent, fake.Pos) {
e.T.Helper()
c, p, err := e.Editor.Hover(e.Ctx, name, pos)
if err != nil {
e.T.Fatal(err)
}
return c, p
}
func (e *Env) DocumentLink(name string) []protocol.DocumentLink {
e.T.Helper()
links, err := e.Editor.DocumentLink(e.Ctx, name)
if err != nil {
e.T.Fatal(err)
}
return links
}
func checkIsFatal(t *testing.T, err error) {
t.Helper()
if err != nil && !errors.Is(err, io.EOF) && !errors.Is(err, io.ErrClosedPipe) {
t.Fatal(err)
}
}
// CloseEditor shuts down the editor, calling t.Fatal on any error.
func (e *Env) CloseEditor() {
e.T.Helper()
checkIsFatal(e.T, e.Editor.Close(e.Ctx))
}
// RunGenerate runs go:generate on the given dir, calling t.Fatal on any error.
// It waits for the generate command to complete and checks for file changes
// before returning.
func (e *Env) RunGenerate(dir string) {
e.T.Helper()
if err := e.Editor.RunGenerate(e.Ctx, dir); err != nil {
e.T.Fatal(err)
}
e.Await(NoOutstandingWork())
// Ideally the fake.Workspace would handle all synthetic file watching, but
// we help it out here as we need to wait for the generate command to
// complete before checking the filesystem.
e.CheckForFileChanges()
}
// RunGoCommand runs the given command in the sandbox's default working
// directory.
func (e *Env) RunGoCommand(verb string, args ...string) {
if err := e.Sandbox.RunGoCommand(e.Ctx, "", verb, args); err != nil {
e.T.Fatal(err)
}
}
// CheckForFileChanges triggers a manual poll of the workspace for any file
// changes since creation, or since last polling. It is a workaround for the
// lack of true file watching support in the fake workspace.
func (e *Env) CheckForFileChanges() {
e.T.Helper()
if err := e.Sandbox.Workdir.CheckForFileChanges(e.Ctx); err != nil {
e.T.Fatal(err)
}
}
// CodeLens calls textDocument/codeLens for the given path, calling t.Fatal on
// any error.
func (e *Env) CodeLens(path string) []protocol.CodeLens {
e.T.Helper()
lens, err := e.Editor.CodeLens(e.Ctx, path)
if err != nil {
e.T.Fatal(err)
}
return lens
}
// ExecuteCodeLensCommand executes the command for the code lens matching the
// given command name.
func (e *Env) ExecuteCodeLensCommand(path string, cmd *source.Command) {
lenses := e.CodeLens(path)
var lens protocol.CodeLens
var found bool
for _, l := range lenses {
if l.Command.Command == cmd.ID() {
lens = l
found = true
}
}
if !found {
e.T.Fatalf("found no command with the ID %s", cmd.ID())
}
if _, err := e.Editor.ExecuteCommand(e.Ctx, &protocol.ExecuteCommandParams{
Command: lens.Command.Command,
Arguments: lens.Command.Arguments,
}); err != nil {
e.T.Fatal(err)
}
}
// References calls textDocument/references for the given path at the given
// position.
func (e *Env) References(path string, pos fake.Pos) []protocol.Location {
e.T.Helper()
locations, err := e.Editor.References(e.Ctx, path, pos)
if err != nil {
e.T.Fatal(err)
}
return locations
}
// Completion executes a completion request on the server.
func (e *Env) Completion(path string, pos fake.Pos) *protocol.CompletionList {
e.T.Helper()
completions, err := e.Editor.Completion(e.Ctx, path, pos)
if err != nil {
e.T.Fatal(err)
}
return completions
}
// CodeAction calls testDocument/codeAction for the given path, and calls
// t.Fatal if there are errors.
func (e *Env) CodeAction(path string) []protocol.CodeAction {
e.T.Helper()
actions, err := e.Editor.CodeAction(e.Ctx, path, nil)
if err != nil {
e.T.Fatal(err)
}
return actions
}
func (e *Env) changeConfiguration(t *testing.T, config *fake.EditorConfig) {
e.Editor.Config = *config
if err := e.Editor.Server.DidChangeConfiguration(e.Ctx, &protocol.DidChangeConfigurationParams{
// gopls currently ignores the Settings field
}); err != nil {
t.Fatal(err)
}
}
// ChangeEnv modifies the editor environment and reconfigures the LSP client.
// TODO: extend this to "ChangeConfiguration", once we refactor the way editor
// configuration is defined.
func (e *Env) ChangeEnv(overlay map[string]string) {
e.T.Helper()
// TODO: to be correct, this should probably be synchronized, but right now
// configuration is only ever modified synchronously in a regtest, so this
// correctness can wait for the previously mentioned refactoring.
if e.Editor.Config.Env == nil {
e.Editor.Config.Env = make(map[string]string)
}
for k, v := range overlay {
e.Editor.Config.Env[k] = v
}
var params protocol.DidChangeConfigurationParams
if err := e.Editor.Server.DidChangeConfiguration(e.Ctx, &params); err != nil {
e.T.Fatal(err)
}
}