package com.flightfeather.obd
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import org.junit.Test
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import java.nio.charset.Charset
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import java.text.SimpleDateFormat
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import java.util.*
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/**
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* @author riku
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* Date: 2019/9/12
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*/
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class Test {
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@Test
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fun foo1() {
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val b = ByteArray(20) {8}
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println(b[18])
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}
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@Test
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fun foo2() {
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val b = ByteArray(2)
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b[0] = 0x01
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b[1] = 0x80.toByte()
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println("${b[0].toString(16)}${b[1].toInt()}")
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println("${b[0]}${b[1]}".toInt(16))
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}
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@Test
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fun foo3() {
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val hexNum = "ff"
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val length = hexNum.toInt(16)
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println(length)
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}
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@Test
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fun foo4() {
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val h = "0101"
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val byte = 0xff
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val b = h.toInt(16)
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println(b)
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}
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@Test
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fun foo5() {
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val s = "23 23 30 30 30 30 30 35 33 31 36 30 38 30 31 30 35 33 36"
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val sb = StringBuilder()
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val ascii = s.split(" ")
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ascii.forEach {
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sb.append(it.toIntOrNull(16)?.toChar())
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}
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println(sb.toString())
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}
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@Test
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fun foo6() {
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val cal = Calendar.getInstance().apply {
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set(2019, 9, 15, 23, 16, 59)
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}
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println(SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(cal.time))
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}
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@Test
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fun foo7() {
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val a = "0AAF".toIntOrNull(16)?.toString(2)
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println(a)
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}
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@Test
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fun foo8() {
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val byte = ByteArray(2)
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byte[0] = 0x23
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byte[1] = 0x23
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byte[0].toString(16)
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}
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@Test
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fun foo9() {
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val b = 128.toByte()
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var a = 0
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if (b < 0) {
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a = b + 256
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} else {
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a = b.toInt()
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}
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println(b.toString(16))
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}
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@Test
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fun foo10() {
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val s = "2 31 37 36 39 31 35 33 31 39 30 39 31 32 30 30 30 36 1 1 0 42 13 9 f 12 33 3b 2 0 8a 1b 0 36 2e 0 23 60 11 b4 0 c8 0 b4 0 0 66 0 0 0 0 0 0 73 0 0 0 b9 4 75 0 2e d8 ed 0 0 0 0 80 0 bc 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0"
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val ascii = s.split(" ")
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var bcc = 0x00
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ascii.forEach {
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bcc = bcc.xor(it.toInt(16))
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}
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println(bcc.toString(16))
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}
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}
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