github.com/solo-io/cue@v0.4.7/internal/core/adt/expr_test.go (about)

     1  // Copyright 2020 CUE Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package adt
    16  
    17  import (
    18  	"fmt"
    19  	"testing"
    20  )
    21  
    22  func TestNilSource(t *testing.T) {
    23  	testCases := []Node{
    24  		&BasicType{},
    25  		&BinaryExpr{},
    26  		&Bool{},
    27  		&Bottom{},
    28  		&BoundExpr{},
    29  		&BoundValue{},
    30  		&Builtin{},
    31  		&BuiltinValidator{},
    32  		&BulkOptionalField{},
    33  		&Bytes{},
    34  		&CallExpr{},
    35  		&Conjunction{},
    36  		&Disjunction{},
    37  		&DisjunctionExpr{},
    38  		&DynamicField{},
    39  		&DynamicReference{},
    40  		&Ellipsis{},
    41  		&Field{},
    42  		&FieldReference{},
    43  		&ForClause{},
    44  		&IfClause{},
    45  		&ImportReference{},
    46  		&IndexExpr{},
    47  		&Interpolation{},
    48  		&LabelReference{},
    49  		&LetClause{},
    50  		&LetReference{},
    51  		&ListLit{},
    52  		&ListMarker{},
    53  		&NodeLink{},
    54  		&Null{},
    55  		&Num{},
    56  		&OptionalField{},
    57  		&SelectorExpr{},
    58  		&SliceExpr{},
    59  		&String{},
    60  		&StructLit{},
    61  		&StructMarker{},
    62  		&Top{},
    63  		&UnaryExpr{},
    64  		&ValueClause{},
    65  		&Vertex{},
    66  	}
    67  	for _, x := range testCases {
    68  		t.Run(fmt.Sprintf("%T", x), func(t *testing.T) {
    69  			if x.Source() != nil {
    70  				t.Error("nil source did not return nil")
    71  			}
    72  		})
    73  	}
    74  }