1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
// Copyright 2016 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 typeutil_test
import (
"fmt"
"go/ast"
"go/parser"
"go/token"
"go/types"
"strings"
"testing"
"golang.org/x/tools/go/types/typeutil"
)
func TestIntuitiveMethodSet(t *testing.T) {
const source = `
package P
type A int
func (A) f()
func (*A) g()
`
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "hello.go", source, 0)
if err != nil {
t.Fatal(err)
}
var conf types.Config
pkg, err := conf.Check("P", fset, []*ast.File{f}, nil)
if err != nil {
t.Fatal(err)
}
qual := types.RelativeTo(pkg)
for _, test := range []struct {
expr string // type expression
want string // intuitive method set
}{
{"A", "(A).f (*A).g"},
{"*A", "(*A).f (*A).g"},
{"error", "(error).Error"},
{"*error", ""},
{"struct{A}", "(struct{A}).f (*struct{A}).g"},
{"*struct{A}", "(*struct{A}).f (*struct{A}).g"},
} {
tv, err := types.Eval(fset, pkg, 0, test.expr)
if err != nil {
t.Errorf("Eval(%s) failed: %v", test.expr, err)
}
var names []string
for _, m := range typeutil.IntuitiveMethodSet(tv.Type, nil) {
name := fmt.Sprintf("(%s).%s", types.TypeString(m.Recv(), qual), m.Obj().Name())
names = append(names, name)
}
got := strings.Join(names, " ")
if got != test.want {
t.Errorf("IntuitiveMethodSet(%s) = %q, want %q", test.expr, got, test.want)
}
}
}
|
