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// Copyright 2022 Google LLC
//
// 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 parser
import (
"testing"
"github.com/google/cel-go/common"
"github.com/google/cel-go/common/ast"
"google.golang.org/protobuf/proto"
)
func TestExprHelperCopy(t *testing.T) {
src := common.NewStringSource(
`noop([1, 2, 3].map(i, Msg{first: 1 + 2, second: a.b, third: {true: true}}))`,
"")
p, err := NewParser(
PopulateMacroCalls(true),
Macros(
MapMacro,
NewGlobalMacro("noop", 1,
func(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) {
return eh.Copy(args[0]), nil
},
),
),
)
if err != nil {
t.Fatalf("NewParser() failed: %v", err)
}
parsed, errs := p.Parse(src)
if errs != nil && len(errs.GetErrors()) != 0 {
t.Fatalf("p.Parse(%v) failed: %v", src, errs.ToDisplayString())
}
// id generation is consistent between runs, and in this case '27' refers to the
// macro expression that's the sole argument to the noop() macro.
macroTarget, found := parsed.SourceInfo().GetMacroCall(27)
if !found {
t.Fatal("GetMacroCall(27) failed to find call")
}
macroExpr, err := ast.ExprToProto(macroTarget)
if err != nil {
t.Fatalf("ast.ExprToProto() failed: %v", err)
}
protoExpr, err := ast.ExprToProto(parsed.Expr())
if err != nil {
t.Fatalf("ast.ExprToProto() failed: %v", err)
}
if proto.Equal(protoExpr, macroExpr) {
t.Errorf("Copy() failed to provide a unique ids: %v", macroExpr)
}
}
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