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go/internal/lsp/regtest/modfile_test.go
Rebecca Stambler cbb3c69a37 internal/lsp: add errors for missing modules that don't map to an import
Some modules may need to be added to the go.mod without being associated
with an import statement. In such cases, we show the missing module
diagnostic on the whole go.mod file. This isn't ideal, but mapping to
the full require statement isn't that simple, and this is an easy enough
starting point. The code in mod_tidy.go is becoming more unwieldy - I
think I will clean it up in a follow-up.

Fixes golang/go#39784

Change-Id: Ib32ec1fd74c455ce42ba778ea6cba0a475cf245a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/243218
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-07-24 00:18:24 +00:00

496 lines
11 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 (
"testing"
"golang.org/x/tools/internal/lsp"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/tests"
"golang.org/x/tools/internal/testenv"
)
const proxy = `
-- example.com@v1.2.3/go.mod --
module example.com
go 1.12
-- example.com@v1.2.3/blah/blah.go --
package blah
const Name = "Blah"
-- random.org@v1.2.3/go.mod --
module random.org
go 1.12
-- random.org@v1.2.3/blah/blah.go --
package hello
const Name = "Hello"
`
func TestModFileModification(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const untidyModule = `
-- go.mod --
module mod.com
-- main.go --
package main
import "example.com/blah"
func main() {
println(blah.Name)
}
`
t.Run("basic", func(t *testing.T) {
withOptions(WithProxyFiles(proxy)).run(t, untidyModule, func(t *testing.T, env *Env) {
// Open the file and make sure that the initial workspace load does not
// modify the go.mod file.
goModContent := env.ReadWorkspaceFile("go.mod")
env.OpenFile("main.go")
env.Await(
env.DiagnosticAtRegexp("main.go", "\"example.com/blah\""),
)
if got := env.ReadWorkspaceFile("go.mod"); got != goModContent {
t.Fatalf("go.mod changed on disk:\n%s", tests.Diff(goModContent, got))
}
// Save the buffer, which will format and organize imports.
// Confirm that the go.mod file still does not change.
env.SaveBuffer("main.go")
env.Await(
env.DiagnosticAtRegexp("main.go", "\"example.com/blah\""),
)
if got := env.ReadWorkspaceFile("go.mod"); got != goModContent {
t.Fatalf("go.mod changed on disk:\n%s", tests.Diff(goModContent, got))
}
})
})
// Reproduce golang/go#40269 by deleting and recreating main.go.
t.Run("delete main.go", func(t *testing.T) {
t.Skipf("This test will be flaky until golang/go#40269 is resolved.")
withOptions(WithProxyFiles(proxy)).run(t, untidyModule, func(t *testing.T, env *Env) {
goModContent := env.ReadWorkspaceFile("go.mod")
mainContent := env.ReadWorkspaceFile("main.go")
env.OpenFile("main.go")
env.SaveBuffer("main.go")
env.RemoveWorkspaceFile("main.go")
env.Await(
CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1),
CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 1),
CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChangeWatchedFiles), 2),
)
env.WriteWorkspaceFile("main.go", mainContent)
env.Await(
env.DiagnosticAtRegexp("main.go", "\"example.com/blah\""),
)
if got := env.ReadWorkspaceFile("go.mod"); got != goModContent {
t.Fatalf("go.mod changed on disk:\n%s", tests.Diff(goModContent, got))
}
})
})
}
func TestIndirectDependencyFix(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const mod = `
-- go.mod --
module mod.com
go 1.12
require example.com v1.2.3 // indirect
-- main.go --
package main
import "example.com/blah"
func main() {
fmt.Println(blah.Name)
`
const want = `module mod.com
go 1.12
require example.com v1.2.3
`
runner.Run(t, mod, func(t *testing.T, env *Env) {
env.OpenFile("go.mod")
d := env.Await(
env.DiagnosticAtRegexp("go.mod", "// indirect"),
)
if len(d) == 0 {
t.Fatalf("no diagnostics")
}
params, ok := d[0].(*protocol.PublishDiagnosticsParams)
if !ok {
t.Fatalf("expected diagnostic of type PublishDiagnosticParams, got %T", d[0])
}
env.ApplyQuickFixes("go.mod", params.Diagnostics)
if got := env.Editor.BufferText("go.mod"); got != want {
t.Fatalf("unexpected go.mod content:\n%s", tests.Diff(want, got))
}
}, WithProxyFiles(proxy))
}
// Test to reproduce golang/go#39041. It adds a new require to a go.mod file
// that already has an unused require.
func TestNewDepWithUnusedDep(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const proxy = `
-- github.com/esimov/caire@v1.2.5/go.mod --
module github.com/esimov/caire
go 1.12
-- github.com/esimov/caire@v1.2.5/caire.go --
package caire
func RemoveTempImage() {}
-- google.golang.org/protobuf@v1.20.0/go.mod --
module google.golang.org/protobuf
go 1.12
-- google.golang.org/protobuf@v1.20.0/hello/hello.go --
package hello
`
const repro = `
-- go.mod --
module mod.com
go 1.14
require google.golang.org/protobuf v1.20.0
-- main.go --
package main
import (
"github.com/esimov/caire"
)
func _() {
caire.RemoveTempImage()
}`
runner.Run(t, repro, func(t *testing.T, env *Env) {
env.OpenFile("go.mod")
env.OpenFile("main.go")
d := env.Await(
env.DiagnosticAtRegexp("main.go", `"github.com/esimov/caire"`),
)
if len(d) == 0 {
t.Fatalf("no diagnostics")
}
params, ok := d[0].(*protocol.PublishDiagnosticsParams)
if !ok {
t.Fatalf("expected diagnostic of type PublishDiagnosticParams, got %T", d[0])
}
env.ApplyQuickFixes("main.go", params.Diagnostics)
want := `module mod.com
go 1.14
require (
github.com/esimov/caire v1.2.5
google.golang.org/protobuf v1.20.0
)
`
if got := env.Editor.BufferText("go.mod"); got != want {
t.Fatalf("TestNewDepWithUnusedDep failed:\n%s", tests.Diff(want, got))
}
}, WithProxyFiles(proxy))
}
// TODO: For this test to be effective, the sandbox's file watcher must respect
// the file watching GlobPattern in the capability registration. See
// golang/go#39384.
func TestModuleChangesOnDisk(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const mod = `
-- go.mod --
module mod.com
go 1.12
require example.com v1.2.3
-- main.go --
package main
func main() {
fmt.Println(blah.Name)
`
const want = `module mod.com
go 1.12
`
runner.Run(t, mod, func(t *testing.T, env *Env) {
env.Await(
CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromInitialWorkspaceLoad), 1),
env.DiagnosticAtRegexp("go.mod", "require"),
)
env.Sandbox.RunGoCommand(env.Ctx, "mod", "tidy")
env.Await(
EmptyDiagnostics("go.mod"),
)
}, WithProxyFiles(proxy))
}
func TestBadlyVersionedModule(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const badModule = `
-- example.com/blah/@v/list --
v1.0.0
-- example.com/blah/@v/v1.0.0.mod --
module example.com
go 1.12
-- example.com/blah@v1.0.0/blah.go --
package blah
const Name = "Blah"
-- example.com/blah@v1.0.0/blah_test.go --
package blah_test
import (
"testing"
)
func TestBlah(t *testing.T) {}
-- example.com/blah/v2/@v/list --
v2.0.0
-- example.com/blah/v2/@v/v2.0.0.mod --
module example.com
go 1.12
-- example.com/blah/v2@v2.0.0/blah.go --
package blah
const Name = "Blah"
-- example.com/blah/v2@v2.0.0/blah_test.go --
package blah_test
import (
"testing"
"example.com/blah"
)
func TestBlah(t *testing.T) {}
`
const pkg = `
-- go.mod --
module mod.com
require (
example.com/blah/v2 v2.0.0
)
-- main.go --
package main
import "example.com/blah/v2"
func main() {
println(blah.Name)
}
`
runner.Run(t, pkg, func(t *testing.T, env *Env) {
env.OpenFile("main.go")
env.OpenFile("go.mod")
metBy := env.Await(
DiagnosticAt("go.mod", 0, 0),
NoDiagnostics("main.go"),
)
d, ok := metBy[0].(*protocol.PublishDiagnosticsParams)
if !ok {
t.Fatalf("unexpected type for metBy (%T)", metBy)
}
env.ApplyQuickFixes("main.go", d.Diagnostics)
const want = `module mod.com
require (
example.com/blah v1.0.0
example.com/blah/v2 v2.0.0
)
`
if got := env.Editor.BufferText("go.mod"); got != want {
t.Fatalf("suggested fixes failed:\n%s", tests.Diff(want, got))
}
}, WithProxyFiles(badModule))
}
// Reproduces golang/go#38232.
func TestUnknownRevision(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const unknown = `
-- go.mod --
module mod.com
require (
example.com v1.2.2
)
-- main.go --
package main
import "example.com/blah"
func main() {
var x = blah.Name
}
`
// Start from a bad state/bad IWL, and confirm that we recover.
t.Run("bad", func(t *testing.T) {
runner.Run(t, unknown, func(t *testing.T, env *Env) {
env.Await(
CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromInitialWorkspaceLoad), 1),
)
env.OpenFile("go.mod")
env.Await(
env.DiagnosticAtRegexp("go.mod", "example.com v1.2.2"),
)
env.RegexpReplace("go.mod", "v1.2.2", "v1.2.3")
env.Editor.SaveBufferWithoutActions(env.Ctx, "go.mod") // go.mod changes must be on disk
env.Await(
env.DiagnosticAtRegexp("main.go", "x = "),
)
}, WithProxyFiles(proxy))
})
const known = `
-- go.mod --
module mod.com
require (
example.com v1.2.3
)
-- main.go --
package main
import "example.com/blah"
func main() {
var x = blah.Name
}
`
// Start from a good state, transform to a bad state, and confirm that we
// still recover.
t.Run("good", func(t *testing.T) {
runner.Run(t, known, func(t *testing.T, env *Env) {
env.OpenFile("go.mod")
env.Await(
env.DiagnosticAtRegexp("main.go", "x = "),
)
env.RegexpReplace("go.mod", "v1.2.3", "v1.2.2")
env.Editor.SaveBufferWithoutActions(env.Ctx, "go.mod") // go.mod changes must be on disk
env.Await(
env.DiagnosticAtRegexp("go.mod", "example.com v1.2.2"),
)
env.RegexpReplace("go.mod", "v1.2.2", "v1.2.3")
env.Editor.SaveBufferWithoutActions(env.Ctx, "go.mod") // go.mod changes must be on disk
env.Await(
env.DiagnosticAtRegexp("main.go", "x = "),
)
}, WithProxyFiles(proxy))
})
}
func TestTidyOnSave(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const untidyModule = `
-- go.mod --
module mod.com
go 1.14
require random.org v1.2.3
-- main.go --
package main
import "example.com/blah"
func main() {
fmt.Println(blah.Name)
}
`
withOptions(WithProxyFiles(proxy)).run(t, untidyModule, func(t *testing.T, env *Env) {
env.OpenFile("go.mod")
env.Await(
env.DiagnosticAtRegexp("main.go", `"example.com/blah"`),
env.DiagnosticAtRegexp("go.mod", `require random.org v1.2.3`),
)
env.SaveBuffer("go.mod")
const want = `module mod.com
go 1.14
require example.com v1.2.3
`
if got := env.ReadWorkspaceFile("go.mod"); got != want {
t.Fatalf("unexpected go.mod content:\n%s", tests.Diff(want, got))
}
})
}
// Confirm that an error in an indirect dependency of a requirement is surfaced
// as a diagnostic in the go.mod file.
func TestErrorInIndirectDependency(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
const badProxy = `
-- example.com@v1.2.3/go.mod --
module example.com
go 1.12
require random.org v1.2.3 // indirect
-- example.com@v1.2.3/blah/blah.go --
package blah
const Name = "Blah"
-- random.org@v1.2.3/go.mod --
module bob.org
go 1.12
-- random.org@v1.2.3/blah/blah.go --
package hello
const Name = "Hello"
`
const module = `
-- go.mod --
module mod.com
go 1.14
require example.com v1.2.3
-- main.go --
package main
import "example.com/blah"
func main() {
println(blah.Name)
}
`
withOptions(WithProxyFiles(badProxy)).run(t, module, func(t *testing.T, env *Env) {
env.OpenFile("go.mod")
env.Await(
env.DiagnosticAtRegexp("go.mod", "require example.com v1.2.3"),
)
})
}