func ExampleSize() {
var a1 int16 = 42
var a2 float32 = 9.2
i := lex.Size(a1)
j := lex.Size(a2)
fmt.Printf("%v\n%v", i, j)
// Output:
// 2
// 4
}
func TestSizeReflectPutReflect_invalidnilptr(t *testing.T) {
b := make([]byte, 8)
var m map[string]int
assert.Equal(t, -1, lex.Size(&m))
lex.Reflect(b, &m)
lex.PutReflect(b, &m)
}
func TestSizeReflectPutReflect_nilptr(t *testing.T) {
b := make([]byte, 8)
var p *int = nil
assert.Equal(t, -1, lex.Size(p))
lex.Reflect(b, p)
lex.PutReflect(b, p)
}
func TestSize_struct_invalid(t *testing.T) {
var tests = []interface{}{
invalidStruct{},
struct{}{},
time.Time{},
}
for _, tt := range tests {
i := lex.Size(tt)
assert.Equal(t, -1, i)
}
}
func BenchmarkSizeInt(b *testing.B) {
v := 64
for n := 0; n < b.N; n++ {
lex.Size(v)
}
}
func BenchmarkSizeString(b *testing.B) {
s := "hello world"
for n := 0; n < b.N; n++ {
lex.Size(s)
}
}
func TestSizeReflectPutReflect_nil(t *testing.T) {
b := make([]byte, 8)
assert.Equal(t, -1, lex.Size(nil))
lex.Reflect(b, nil)
lex.PutReflect(b, nil)
}
func TestSizeReflectPutReflect(t *testing.T) {
v01 := string("howdy")
v02 := bool(true)
v03 := int8(2)
v04 := int16(3)
v05 := int32(5)
v06 := int64(8)
v07 := uint8(2)
v08 := uint16(3)
v09 := uint32(5)
v10 := uint64(8)
v11 := float32(23)
v12 := float64(46)
v13 := complex(float32(1), float32(2))
v14 := complex(float64(1), float64(2))
v15 := byte(24)
v16 := rune(24)
v17 := int(42)
v18 := uint(42)
a01 := mystring("howdy")
a02 := mybool(true)
a03 := myint8(2)
a04 := myint16(3)
a05 := myint32(5)
a06 := myint64(8)
a07 := myuint8(2)
a08 := myuint16(3)
a09 := myuint32(5)
a10 := myuint64(8)
a11 := myfloat32(23)
a12 := myfloat64(46)
a13 := mycomplex64(complex(float32(1), float32(2)))
a14 := mycomplex128(complex(float64(1), float64(2)))
a15 := mybyte(24)
a16 := myrune(24)
a17 := myint(42)
a18 := myuint(42)
s01 := mystruct1{24, 42}
s02 := mystruct2{1.5, 5.0}
s03 := mystruct3{
mystruct1{1, 2},
mystruct2{3.0, 4.0},
}
var tests = []struct {
val, ptr interface{}
size int
}{
//builtin
{v01, &v01, len(v01) + 1},
{v02, &v02, 1},
{v03, &v03, 1},
{v04, &v04, 2},
{v05, &v05, 4},
{v06, &v06, 8},
{v07, &v07, 1},
{v08, &v08, 2},
{v09, &v09, 4},
{v10, &v10, 8},
{v11, &v11, 4},
{v12, &v12, 8},
{v13, &v13, 8},
{v14, &v14, 16},
{v15, &v15, 1},
{v16, &v16, 4},
{v17, &v17, 8},
{v18, &v18, 8},
//aliased
{a01, &a01, len(a01) + 1},
{a02, &a02, 1},
{a03, &a03, 1},
{a04, &a04, 2},
{a05, &a05, 4},
{a06, &a06, 8},
{a07, &a07, 1},
{a08, &a08, 2},
{a09, &a09, 4},
{a10, &a10, 8},
{a11, &a11, 4},
{a12, &a12, 8},
{a13, &a13, 8},
{a14, &a14, 16},
{a15, &a15, 1},
{a16, &a16, 4},
{a17, &a17, 8},
{a18, &a18, 8},
//structs
{s01, &s01, 8},
{s02, &s02, 8},
{s03, &s03, 16},
}
for _, tt := range tests {
assert.Equal(t, tt.size, lex.Size(tt.val), "(%v) %v", reflect.ValueOf(tt.val).Kind(), tt.val)
assert.Equal(t, tt.size, lex.Size(tt.ptr), "(%v ptr)", reflect.ValueOf(tt.val).Kind())
b1 := make([]byte, tt.size)
b2 := make([]byte, tt.size)
lex.PutReflect(b1, tt.val)
lex.Reflect(b2, tt.ptr) //underneath, val == *ptr, so we need to change the value of ptr
lex.PutReflect(b2, tt.ptr) //we're cheating a little and just using Reflect/PutReflect as a means
assert.False(t, bytes.Equal(b1, b2)) //to change the underlying value, avoiding a bunch of type checks
lex.Reflect(b1, tt.ptr)
lex.PutReflect(b2, tt.ptr)
assert.True(t, bytes.Equal(b1, b2))
}
}
func TestSize_struct(t *testing.T) {
st := testStruct{42, "hello", 12.5}
i := lex.Size(st)
assert.Equal(t, 18, i)
}
func TestSize_alias(t *testing.T) {
i := lex.Size(aliasedInt(42))
assert.Equal(t, 8, i)
}
func TestSize(t *testing.T) {
i := lex.Size(int32(42))
assert.Equal(t, 4, i)
}