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|
package expr
import (
"reflect"
"testing"
"github.com/stretchr/testify/assert"
)
type TestStruct1 struct {
A int
B float64
}
func TestEvalSimple(t *testing.T) {
tests := []struct {
struc interface{}
expr string
result interface{}
}{
{
TestStruct1{A: 42},
"A",
42,
},
{
TestStruct1{A: 42},
"A * 2",
84,
},
{
TestStruct1{B: 10.5},
"B * 2",
21.0,
},
{
TestStruct1{B: 10.5},
"-(B * 2)",
-21.0,
},
{
TestStruct1{A: 0xf0},
"^0xf0 | A",
-1,
},
{
TestStruct1{},
"2 << 2",
8,
},
{
TestStruct1{},
"true",
true,
},
{
TestStruct1{},
"false",
false,
},
{
TestStruct1{},
"true ? 1.0 : 0.0",
1.0,
},
{
TestStruct1{},
"false ? 1.0 : 0.0",
0.0,
},
{
TestStruct1{},
`"string value!"`,
"string value!",
},
{
TestStruct1{},
`"equal" == "equal"`,
true,
},
{
TestStruct1{},
`"equal" == "not equal"`,
false,
},
{
TestStruct1{},
`"equal" != "not equal"`,
true,
},
{
TestStruct1{},
`"equal" != "equal"`,
false,
},
{
TestStruct1{},
`"equal"[1] == 'q'`,
true,
},
}
for _, test := range tests {
resolver := NewStructResolver(reflect.ValueOf(test.struc))
result, err := Eval(resolver, test.expr)
assert.Nil(t, err)
assert.Equal(t, test.result, result)
}
}
func TestError(t *testing.T) {
tests := []struct {
struc interface{}
expr string
err string
}{
{
TestStruct1{A: 42},
"!A",
"invalid operation: operator ! not defined for 42 (int)",
},
{
TestStruct1{},
"!42",
"invalid operation: operator ! not defined for 42 (untyped int constant)",
},
{
TestStruct1{A: 1, B: 1.0},
"A == B",
"cannot convert int to float64",
},
{
TestStruct1{A: 1, B: 1.0},
"A == true",
"cannot convert int to untyped bool constant",
},
{
TestStruct1{A: 1, B: 1.0},
"A > true",
"cannot convert int to untyped bool constant",
},
}
for _, test := range tests {
resolver := NewStructResolver(reflect.ValueOf(test.struc))
_, err := Eval(resolver, test.expr)
assert.EqualError(t, err, test.err)
}
}
|
