github.com/jhump/golang-x-tools@v0.0.0-20220218190644-4958d6d39439/internal/lsp/cmd/test/signature.go (about) 1 // Copyright 2019 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. 4 5 package cmdtest 6 7 import ( 8 "fmt" 9 "testing" 10 11 "github.com/jhump/golang-x-tools/internal/lsp/protocol" 12 "github.com/jhump/golang-x-tools/internal/lsp/tests" 13 "github.com/jhump/golang-x-tools/internal/span" 14 ) 15 16 func (r *runner) SignatureHelp(t *testing.T, spn span.Span, want *protocol.SignatureHelp) { 17 uri := spn.URI() 18 filename := uri.Filename() 19 target := filename + fmt.Sprintf(":%v:%v", spn.Start().Line(), spn.Start().Column()) 20 got, _ := r.NormalizeGoplsCmd(t, "signature", target) 21 if want == nil { 22 if got != "" { 23 t.Fatalf("want nil, but got %s", got) 24 } 25 return 26 } 27 goldenTag := want.Signatures[0].Label + "-signature" 28 expect := string(r.data.Golden(goldenTag, filename, func() ([]byte, error) { 29 return []byte(got), nil 30 })) 31 if tests.NormalizeAny(expect) != tests.NormalizeAny(got) { 32 t.Errorf("signature failed for %s expected:\n%q\ngot:\n%q'", filename, expect, got) 33 } 34 }