MessagePack/src/test/kotlin/ch/dissem/msgpack/ReaderTest.kt

269 lines
9.8 KiB
Kotlin

/*
* Copyright 2017 Christian Basler
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ch.dissem.msgpack
import ch.dissem.msgpack.types.*
import ch.dissem.msgpack.types.Utils.mp
import org.hamcrest.CoreMatchers.equalTo
import org.hamcrest.CoreMatchers.instanceOf
import org.junit.Assert.assertThat
import org.junit.Test
import java.io.ByteArrayInputStream
import java.io.ByteArrayOutputStream
import java.io.InputStream
import java.util.*
class ReaderTest {
@Test
fun `ensure demo json is parsed correctly`() {
val read = Reader.read(stream("demo.mp"))
assertThat(read, instanceOf(MPMap::class.java))
assertThat(read.toString(), equalTo(string("demo.json")))
}
@Test
fun `ensure demo json is encoded correctly`() {
val obj = MPMap<MPString, MPType<*>>()
obj.put("compact".mp, true.mp)
obj.put("schema".mp, 0.mp)
val out = ByteArrayOutputStream()
obj.pack(out)
assertThat(out.toByteArray(), equalTo(bytes("demo.mp")))
}
@Test
fun `ensure mpArray is encoded and decoded correctly`() {
val array = MPArray(
byteArrayOf(1, 3, 3, 7).mp,
false.mp,
Math.PI.mp,
1.5f.mp,
42.mp,
MPMap<MPNil, MPNil>(),
MPNil,
"yay! \uD83E\uDD13".mp
)
val out = ByteArrayOutputStream()
array.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf(MPArray::class.java))
@Suppress("UNCHECKED_CAST")
assertThat(read as MPArray<MPType<*>>, equalTo(array))
assertThat(read.toJson(), equalTo("[\n AQMDBw==,\n false,\n 3.141592653589793,\n 1.5,\n 42,\n {\n },\n null,\n \"yay! 🤓\"\n]"))
}
@Test
fun `ensure float is encoded and decoded correctly`() {
val expected = MPFloat(1.5f)
val out = ByteArrayOutputStream()
expected.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf<Any>(MPFloat::class.java))
val actual = read as MPFloat
assertThat(actual, equalTo(expected))
assertThat(actual.precision, equalTo(MPFloat.Precision.FLOAT32))
}
@Test
fun `ensure double is encoded and decoded correctly`() {
val expected = MPFloat(Math.PI)
val out = ByteArrayOutputStream()
expected.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf<Any>(MPFloat::class.java))
val actual = read as MPFloat
assertThat(actual, equalTo(expected))
assertThat(actual.value, equalTo(Math.PI))
assertThat(actual.precision, equalTo(MPFloat.Precision.FLOAT64))
}
@Test
fun `ensure longs are encoded and decoded correctly`() {
// positive fixnum
ensureLongIsEncodedAndDecodedCorrectly(0, 1)
ensureLongIsEncodedAndDecodedCorrectly(127, 1)
// negative fixnum
ensureLongIsEncodedAndDecodedCorrectly(-1, 1)
ensureLongIsEncodedAndDecodedCorrectly(-32, 1)
// uint 8
ensureLongIsEncodedAndDecodedCorrectly(128, 2)
ensureLongIsEncodedAndDecodedCorrectly(255, 2)
// uint 16
ensureLongIsEncodedAndDecodedCorrectly(256, 3)
ensureLongIsEncodedAndDecodedCorrectly(65535, 3)
// uint 32
ensureLongIsEncodedAndDecodedCorrectly(65536, 5)
ensureLongIsEncodedAndDecodedCorrectly(4294967295L, 5)
// uint 64
ensureLongIsEncodedAndDecodedCorrectly(4294967296L, 9)
ensureLongIsEncodedAndDecodedCorrectly(java.lang.Long.MAX_VALUE, 9)
// int 8
ensureLongIsEncodedAndDecodedCorrectly(-33, 2)
ensureLongIsEncodedAndDecodedCorrectly(-128, 2)
// int 16
ensureLongIsEncodedAndDecodedCorrectly(-129, 3)
ensureLongIsEncodedAndDecodedCorrectly(-32768, 3)
// int 32
ensureLongIsEncodedAndDecodedCorrectly(-32769, 5)
ensureLongIsEncodedAndDecodedCorrectly(Integer.MIN_VALUE.toLong(), 5)
// int 64
ensureLongIsEncodedAndDecodedCorrectly(-2147483649L, 9)
ensureLongIsEncodedAndDecodedCorrectly(java.lang.Long.MIN_VALUE, 9)
}
private fun ensureLongIsEncodedAndDecodedCorrectly(`val`: Long, bytes: Int) {
val value = `val`.mp
val out = ByteArrayOutputStream()
value.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(out.size(), equalTo(bytes))
assertThat(read, instanceOf<Any>(MPInteger::class.java))
assertThat(read as MPInteger, equalTo(value))
}
@Test
fun `ensure strings are encoded and decoded correctly`() {
ensureStringIsEncodedAndDecodedCorrectly(0)
ensureStringIsEncodedAndDecodedCorrectly(31)
ensureStringIsEncodedAndDecodedCorrectly(32)
ensureStringIsEncodedAndDecodedCorrectly(255)
ensureStringIsEncodedAndDecodedCorrectly(256)
ensureStringIsEncodedAndDecodedCorrectly(65535)
ensureStringIsEncodedAndDecodedCorrectly(65536)
}
@Test
fun `ensure json strings are escaped correctly`() {
val builder = StringBuilder()
var c = '\u0001'
while (c < ' ') {
builder.append(c)
c++
}
val string = MPString(builder.toString())
assertThat(string.toJson(), equalTo("\"\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007\\b\\t\\n\\u000b\\u000c\\r\\u000e\\u000f\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017\\u0018\\u0019\\u001a\\u001b\\u001c\\u001d\\u001e\\u001f\""))
}
private fun ensureStringIsEncodedAndDecodedCorrectly(length: Int) {
val value = MPString(stringWithLength(length))
val out = ByteArrayOutputStream()
value.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf<Any>(MPString::class.java))
assertThat(read as MPString, equalTo(value))
}
@Test
fun `ensure binaries are encoded and decoded correctly`() {
ensureBinaryIsEncodedAndDecodedCorrectly(0)
ensureBinaryIsEncodedAndDecodedCorrectly(255)
ensureBinaryIsEncodedAndDecodedCorrectly(256)
ensureBinaryIsEncodedAndDecodedCorrectly(65535)
ensureBinaryIsEncodedAndDecodedCorrectly(65536)
}
private fun ensureBinaryIsEncodedAndDecodedCorrectly(length: Int) {
val value = MPBinary(ByteArray(length))
RANDOM.nextBytes(value.value)
val out = ByteArrayOutputStream()
value.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf<Any>(MPBinary::class.java))
assertThat(read as MPBinary, equalTo(value))
}
@Test
fun `ensure arrays are encoded and decoded correctly`() {
ensureArrayIsEncodedAndDecodedCorrectly(0)
ensureArrayIsEncodedAndDecodedCorrectly(15)
ensureArrayIsEncodedAndDecodedCorrectly(16)
ensureArrayIsEncodedAndDecodedCorrectly(65535)
ensureArrayIsEncodedAndDecodedCorrectly(65536)
}
private fun ensureArrayIsEncodedAndDecodedCorrectly(length: Int) {
val nil = MPNil
val list = ArrayList<MPNil>(length)
for (i in 0 until length) {
list.add(nil)
}
val value = MPArray(list)
val out = ByteArrayOutputStream()
value.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf(MPArray::class.java))
@Suppress("UNCHECKED_CAST")
assertThat(read as MPArray<MPNil>, equalTo(value))
}
@Test
fun `ensure maps are encoded and decoded correctly`() {
ensureMapIsEncodedAndDecodedCorrectly(0)
ensureMapIsEncodedAndDecodedCorrectly(15)
ensureMapIsEncodedAndDecodedCorrectly(16)
ensureMapIsEncodedAndDecodedCorrectly(65535)
ensureMapIsEncodedAndDecodedCorrectly(65536)
}
private fun ensureMapIsEncodedAndDecodedCorrectly(size: Int) {
val nil = MPNil
val map = HashMap<MPInteger, MPNil>(size)
for (i in 0..size - 1) {
map.put(i.mp, nil)
}
val value = MPMap(map)
val out = ByteArrayOutputStream()
value.pack(out)
val read = Reader.read(ByteArrayInputStream(out.toByteArray()))
assertThat(read, instanceOf<Any>(MPMap::class.java))
@Suppress("UNCHECKED_CAST")
assertThat(read as MPMap<MPInteger, MPNil>, equalTo(value))
}
private fun stringWithLength(length: Int): String {
val result = StringBuilder(length)
for (i in 0..length - 1) {
result.append('a')
}
return result.toString()
}
private fun stream(resource: String): InputStream {
return javaClass.classLoader.getResourceAsStream(resource)
}
private fun bytes(resource: String): ByteArray {
val `in` = stream(resource)
val out = ByteArrayOutputStream()
val buffer = ByteArray(100)
var size = `in`.read(buffer)
while (size >= 0) {
out.write(buffer, 0, size)
size = `in`.read(buffer)
}
return out.toByteArray()
}
private fun string(resource: String): String {
return String(bytes(resource))
}
companion object {
private val RANDOM = Random()
}
}