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go/internal/lsp/regtest/diagnostics_test.go
Rob Findley 741f65b509 internal/lsp/lsprpc: add a forwarder handler
Add a forwarder handler that alters messages before forwarding, for now,
it just intercepts the "exit" message.

Also, make it easier to write regression tests for a shared gopls
instance, by adding a helper that instantiates two connected
environments, and only runs in the shared execution modes.

Updates golang/go#36879
Updates golang/go#34111

Change-Id: I7673f72ab71b5c7fd6ad65d274c15132a942e06a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/218778
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-02-19 15:38:09 +00:00

95 lines
2.1 KiB
Go

// 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 (
"context"
"testing"
"golang.org/x/tools/internal/lsp/fake"
)
const exampleProgram = `
-- go.mod --
module mod
go 1.12
-- main.go --
package main
import "fmt"
func main() {
fmt.Println("Hello World.")
}`
func TestDiagnosticErrorInEditedFile(t *testing.T) {
t.Parallel()
runner.Run(t, exampleProgram, func(ctx context.Context, t *testing.T, env *Env) {
// Deleting the 'n' at the end of Println should generate a single error
// diagnostic.
edit := fake.NewEdit(5, 11, 5, 12, "")
env.OpenFile("main.go")
env.EditBuffer("main.go", edit)
env.Await(DiagnosticAt("main.go", 5, 5))
})
}
const brokenFile = `package main
const Foo = "abc
`
func TestDiagnosticErrorInNewFile(t *testing.T) {
t.Parallel()
runner.Run(t, brokenFile, func(ctx context.Context, t *testing.T, env *Env) {
env.CreateBuffer("broken.go", brokenFile)
env.Await(DiagnosticAt("broken.go", 2, 12))
})
}
// badPackage contains a duplicate definition of the 'a' const.
const badPackage = `
-- go.mod --
module mod
go 1.12
-- a.go --
package consts
const a = 1
-- b.go --
package consts
const a = 2
`
func TestDiagnosticClearingOnEdit(t *testing.T) {
t.Parallel()
runner.Run(t, badPackage, func(ctx context.Context, t *testing.T, env *Env) {
env.OpenFile("b.go")
env.Await(DiagnosticAt("a.go", 2, 6), DiagnosticAt("b.go", 2, 6))
// Fix the error by editing the const name in b.go to `b`.
edit := fake.NewEdit(2, 6, 2, 7, "b")
env.EditBuffer("b.go", edit)
env.Await(EmptyDiagnostics("a.go"), EmptyDiagnostics("b.go"))
})
}
func TestDiagnosticClearingOnDelete(t *testing.T) {
t.Skip("skipping due to golang.org/issues/37049")
t.Parallel()
runner.Run(t, badPackage, func(ctx context.Context, t *testing.T, env *Env) {
env.OpenFile("a.go")
env.Await(DiagnosticAt("a.go", 2, 6), DiagnosticAt("b.go", 2, 6))
env.RemoveFileFromWorkspace("b.go")
// TODO(golang.org/issues/37049): here we only get diagnostics for a.go.
env.Await(EmptyDiagnostics("a.go"), EmptyDiagnostics("b.go"))
})
}