kubernetes parser_test 源码
kubernetes parser_test 代码
文件路径：/staging/src/k8s.io/code-generator/cmd/go-to-protobuf/protobuf/parser_test.go
/*
Copyright 2020 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package protobuf
import (
"go/ast"
"testing"
)
/*
struct fields in go AST:
type Struct struct {
// fields with a direct field Name as <Ident>
A X // regular fields
B *X // pointer fields
C // embedded type field
// qualified embedded type fields use an <SelExpr> in the AST
v1.TypeMeta // X=v1, Sel=TypeMeta
// fields without a direct name, but
// a <StarExpr> in the go-AST
*D // type field embedded as pointer
*v1.ListMeta // qualified type field embedded as pointer
// with <StarExpr> pointing to <SelExpr>
}
*/
func TestProtoParser(t *testing.T) {
ident := ast.NewIdent("FieldName")
tests := []struct {
expr ast.Expr
err bool
}{
// valid struct field expressions
{
expr: ident,
err: false,
},
{
expr: &ast.SelectorExpr{
Sel: ident,
},
err: false,
},
{
expr: &ast.StarExpr{
X: ident,
},
err: false,
},
{
expr: &ast.StarExpr{
X: &ast.StarExpr{
X: ident,
},
},
err: false,
},
{
expr: &ast.StarExpr{
X: &ast.SelectorExpr{
Sel: ident,
},
},
err: false,
},
// something else should provide an error
{
expr: &ast.KeyValueExpr{
Key: ident,
Colon: 0,
Value: ident,
},
err: true,
},
{
expr: &ast.StarExpr{
X: &ast.KeyValueExpr{
Key: ident,
Colon: 0,
Value: ident,
},
},
err: true,
},
}
for _, test := range tests {
actual, err := getFieldName(test.expr, "Struct")
if !test.err {
if err != nil {
t.Errorf("%s: unexpected error %s", test.expr, err)
} else {
if actual != ident.Name {
t.Errorf("%s: expected %s, got %s", test.expr, ident.Name, actual)
}
}
} else {
if err == nil {
t.Errorf("%s: expected error did not occur, got %s instead", test.expr, actual)
}
}
}
}
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