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go/internal/lsp/cmd/format_test.go
Ian Cottrell 4ca280b5bd internal/lsp: fix definition tests to use golden files
specifically it uses them for the guru compatability tests
This change radically increases the test coverage of the godef tests as it now
works for all the jump to definition tests not just the specialized ones.

Change-Id: I63547138566ac3de56344dcfddb758ed5f362a06
Reviewed-on: https://go-review.googlesource.com/c/tools/+/174937
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-10 21:06:55 +00:00

67 lines
1.8 KiB
Go

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cmd_test
import (
"context"
"os/exec"
"regexp"
"strings"
"testing"
"golang.org/x/tools/internal/lsp/cmd"
"golang.org/x/tools/internal/lsp/tests"
"golang.org/x/tools/internal/tool"
)
var formatModes = [][]string{
[]string{},
[]string{"-d"},
}
func (r *runner) Format(t *testing.T, data tests.Formats) {
for _, spn := range data {
for _, mode := range formatModes {
tag := "gofmt" + strings.Join(mode, "")
uri := spn.URI()
filename, err := uri.Filename()
if err != nil {
t.Fatal(err)
}
args := append(mode, filename)
expect := string(r.data.Golden(tag, filename, func() ([]byte, error) {
cmd := exec.Command("gofmt", args...)
contents, _ := cmd.Output() // ignore error, sometimes we have intentionally ungofmt-able files
contents = []byte(normalizePaths(r.data, fixFileHeader(string(contents))))
return contents, nil
}))
if expect == "" {
//TODO: our error handling differs, for now just skip unformattable files
continue
}
app := &cmd.Application{}
app.Config = r.data.Config
got := captureStdOut(t, func() {
tool.Main(context.Background(), app, append([]string{"-remote=internal", "format"}, args...))
})
got = normalizePaths(r.data, got)
// check the first two lines are the expected file header
if expect != got {
t.Errorf("format failed with %#v expected:\n%s\ngot:\n%s", args, expect, got)
}
}
}
}
var unifiedHeader = regexp.MustCompile(`^diff -u.*\n(---\s+\S+\.go\.orig)\s+[\d-:. ]+(\n\+\+\+\s+\S+\.go)\s+[\d-:. ]+(\n@@)`)
func fixFileHeader(s string) string {
match := unifiedHeader.FindStringSubmatch(s)
if match == nil {
return s
}
return strings.Join(append(match[1:], s[len(match[0]):]), "")
}