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package ipmi
import (
"testing"
)
func Test_onesComplement(t *testing.T) {
// https://en.wikipedia.org/wiki/Ones%27_complement
tests := []struct {
name string
input uint32
bitSize uint8
expected int32
}{
{"test1", 127, 8, 127},
{"test2", 126, 8, 126},
{"test3", 2, 8, 2},
{"test4", 1, 8, 1},
{"test5", 0, 8, 0},
{"test6", 255, 8, -0},
{"test7", 254, 8, -1},
{"test8", 253, 8, -2},
{"test9", 129, 8, -126},
{"test10", 128, 8, -127},
}
for _, test := range tests {
got := onesComplement(test.input, test.bitSize)
if got != test.expected {
t.Errorf("test %s not matched, got: %d, expected: %d", test.name, got, test.expected)
}
}
}
func Test_twosComplement(t *testing.T) {
// https://en.wikipedia.org/wiki/Two%27s_complement
tests := []struct {
name string
input uint32
bitSize uint8
expected int32
}{
{"test1", 0, 8, 0},
{"test2", 1, 8, 1},
{"test3", 2, 8, 2},
{"test4", 126, 8, 126},
{"test5", 127, 8, 127},
{"test6", 128, 8, -128},
{"test7", 129, 8, -127},
{"test8", 130, 8, -126},
{"test9", 254, 8, -2},
{"test10", 255, 8, -1},
}
for _, test := range tests {
got := twosComplement(test.input, test.bitSize)
if got != test.expected {
t.Errorf("test %s not matched, got: %d, expected: %d", test.name, got, test.expected)
}
}
}
func Test_onesComplementEncode(t *testing.T) {
// https://en.wikipedia.org/wiki/Ones%27_complement
tests := []struct {
name string
expected uint32
bitSize uint8
input int32
}{
{"test1", 127, 8, 127},
{"test2", 126, 8, 126},
{"test3", 2, 8, 2},
{"test4", 1, 8, 1},
{"test5", 0, 8, 0},
// {"test6", 255, 8, -0},
{"test7", 254, 8, -1},
{"test8", 253, 8, -2},
{"test9", 129, 8, -126},
{"test10", 128, 8, -127},
}
for _, test := range tests {
got := onesComplementEncode(test.input, test.bitSize)
if got != test.expected {
t.Errorf("test %s not matched, got: %d, expected: %d", test.name, got, test.expected)
}
}
}
func Test_twosComplementEncode(t *testing.T) {
// https://en.wikipedia.org/wiki/Two%27s_complement
tests := []struct {
name string
expected uint32
bitSize uint8
input int32
}{
{"test1", 0, 8, 0},
{"test2", 1, 8, 1},
{"test3", 2, 8, 2},
{"test4", 126, 8, 126},
{"test5", 127, 8, 127},
{"test6", 128, 8, -128},
{"test7", 129, 8, -127},
{"test8", 130, 8, -126},
{"test9", 254, 8, -2},
{"test10", 255, 8, -1},
}
for _, test := range tests {
got := twosComplementEncode(test.input, test.bitSize)
if got != test.expected {
t.Errorf("test %s not matched, got: %d, expected: %d", test.name, got, test.expected)
}
}
}
func Test_unpackBytes(t *testing.T) {
tests := []struct {
name string
expected []byte
input []uint8
offset int
length int
}{
{"test1", []byte{0x03, 0x04}, []uint8{0x01, 0x02, 0x03, 0x04}, 2, 2},
{"test2", []byte{0x04, 0x05, 0x06, 0x07}, []uint8{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}, 3, 4},
{"test3", []byte{}, []uint8{}, 0, 0},
{"test4", []byte{0x01}, []uint8{0x01}, 0, 1},
}
for _, tt := range tests {
got, _, err := unpackBytes(tt.input, tt.offset, tt.length)
if err != nil {
t.Errorf("test (%s) unpackBytes failed, err: %s", tt.name, err)
return
}
if !isByteSliceEqual(got, tt.expected) {
t.Errorf("test %s not matched, got: %v, expected: %v", tt.name, got, tt.expected)
return
}
}
}
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