/
typestr_test.go
113 lines (95 loc) · 3.03 KB
/
typestr_test.go
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package restruct
import (
"go/ast"
"go/token"
"reflect"
"testing"
"github.com/stretchr/testify/assert"
)
func TestParseType(t *testing.T) {
RegisterArrayType([5]*float32{})
tests := []struct {
input string
typ reflect.Type
errstr string
}{
// Bad code
{"", nil, "parsing error"},
{"Invalid", nil, "unknown type Invalid"},
{"[][435w5[43]]]**//!!!!!!!", nil, "parsing error"},
{"日本語ですか？", nil, "parsing error"},
// Containers
{"float32", reflect.TypeOf(float32(0)), ""},
{"*float32", reflect.TypeOf((*float32)(nil)), ""},
{"[5]*float32", reflect.TypeOf([5]*float32{}), ""},
{"[5]*invalid", nil, "unknown type invalid"},
{"[][][]*float32", reflect.TypeOf([][][]*float32{}), ""},
{"[][][]*invalid", nil, "unknown type invalid"},
// Types
{"bool", reflect.TypeOf(false), ""},
{"uint8", reflect.TypeOf(uint8(0)), ""},
{"uint16", reflect.TypeOf(uint16(0)), ""},
{"uint32", reflect.TypeOf(uint32(0)), ""},
{"uint64", reflect.TypeOf(uint64(0)), ""},
{"int8", reflect.TypeOf(int8(0)), ""},
{"int16", reflect.TypeOf(int16(0)), ""},
{"int32", reflect.TypeOf(int32(0)), ""},
{"int64", reflect.TypeOf(int64(0)), ""},
{"complex64", reflect.TypeOf(complex64(0)), ""},
{"complex128", reflect.TypeOf(complex128(0)), ""},
{"byte", reflect.TypeOf(byte(0)), ""},
{"rune", reflect.TypeOf(rune(0)), ""},
{"uint", reflect.TypeOf(uint(0)), ""},
{"int", reflect.TypeOf(int(0)), ""},
{"uintptr", reflect.TypeOf(uintptr(0)), ""},
{"string", reflect.TypeOf([]byte{}), ""},
// Illegal types
{"chan int", nil, "channel type not allowed"},
{"*chan int", nil, "channel type not allowed"},
{"map[string]string", nil, "map type not allowed"},
{"map[interface{}]interface{}", nil, "map type not allowed"},
// Disallowed expressions
{"i + 1", nil, "unexpected expression: *ast.BinaryExpr"},
{"i()", nil, "unexpected expression: *ast.CallExpr"},
}
for _, test := range tests {
typ, err := parseType(test.input)
if typ != nil {
assert.Equal(t, test.typ.String(), typ.String())
}
if err != nil {
assert.Contains(t, err.Error(), test.errstr)
}
}
}
func TestBadAst(t *testing.T) {
// typeOfExpr should gracefully handle broken AST structures. Let's
// construct some.
// Array with bad length descriptor.
// [Bad]int32
badArr := ast.ArrayType{
Len: ast.NewIdent("Bad"),
Elt: ast.NewIdent("int32"),
}
typ, err := typeOfExpr(&badArr)
assert.Equal(t, typ, nil)
assert.Equal(t, err.Error(), "invalid array size expression")
// Array with bad length descriptor.
// ["How about that!"]int32
badArr = ast.ArrayType{
Len: &ast.BasicLit{Kind: token.STRING, Value: `"How about that!"`},
Elt: ast.NewIdent("int32"),
}
typ, err = typeOfExpr(&badArr)
assert.Equal(t, typ, nil)
assert.Equal(t, err.Error(), "invalid array size type")
// Array with bad length descriptor.
// [10ii0]int32
badArr = ast.ArrayType{
Len: &ast.BasicLit{Kind: token.INT, Value: "10ii0"},
Elt: ast.NewIdent("int32"),
}
typ, err = typeOfExpr(&badArr)
assert.Equal(t, typ, nil)
assert.NotNil(t, err)
}