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go/internal/lsp/regtest/imports_test.go
pjw 8979540587 internal/lsp: simplify and correct fixing imports for CodeAction
The code was introducting syntax errors for some edge cases (example in
regtest/import_test.go), and I found it hard to follow.

The new code passes all the tests. There are new regtests to guarantee
no CodeActions are returned for some cases that vim testing noticed.

Change-Id: Ia09da667f74673c11bfe185e4f76a76c66940105
Reviewed-on: https://go-review.googlesource.com/c/tools/+/233117
Run-TryBot: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-05-18 22:54:12 +00:00

101 lines
1.8 KiB
Go

package regtest
import (
"testing"
)
const needs = `
-- go.mod --
module foo
-- a.go --
package main
func f() {}
`
const ntest = `package main
func TestZ(t *testing.T) {
f()
}
`
const want = `package main
import "testing"
func TestZ(t *testing.T) {
f()
}
`
func TestIssue38815(t *testing.T) {
// it was returning
// "package main\nimport \"testing\"\npackage main..."
runner.Run(t, needs, func(t *testing.T, env *Env) {
env.CreateBuffer("a_test.go", ntest)
env.SaveBuffer("a_test.go")
got := env.Editor.BufferText("a_test.go")
if want != got {
t.Errorf("got\n%q, wanted\n%q", got, want)
}
})
}
const vim1 = `package main
import "fmt"
var foo = 1
var bar = 2
func main() {
fmt.Printf("This is a test %v\n", foo)
fmt.Printf("This is another test %v\n", foo)
fmt.Printf("This is also a test %v\n", foo)
}
`
func TestVim1(t *testing.T) {
// The file remains unchanged, but if there are any CodeActions returned, they confuse vim.
// Therefore check for no CodeActions
runner.Run(t, vim1, func(t *testing.T, env *Env) {
env.CreateBuffer("main.go", vim1)
env.OrganizeImports("main.go")
actions := env.CodeAction("main.go")
if len(actions) > 0 {
got := env.Editor.BufferText("main.go")
t.Errorf("unexpected actions %#v", actions)
if got == vim1 {
t.Errorf("no changes")
} else {
t.Errorf("got\n%q", got)
t.Errorf("was\n%q", vim1)
}
}
})
}
const vim2 = `package main
import (
"fmt"
"example.com/blah"
"rubbish.com/useless"
)
func main() {
fmt.Println(blah.Name, useless.Name)
}
`
func TestVim2(t *testing.T) {
runner.Run(t, vim1, func(t *testing.T, env *Env) {
env.CreateBuffer("main.go", vim2)
env.OrganizeImports("main.go")
actions := env.CodeAction("main.go")
if len(actions) > 0 {
t.Errorf("unexpected actions %#v", actions)
}
})
}