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Add writing of Decimal64 from underlying 64-bit representation
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88 changes: 88 additions & 0 deletions
88
...la-core/jvm/src/test/scala/com/github/plokhotnyuk/jsoniter_scala/core/Decimal64Spec.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package com.github.plokhotnyuk.jsoniter_scala.core | ||
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| import org.scalacheck.Arbitrary.arbitrary | ||
| import org.scalatest.matchers.should.Matchers | ||
| import org.scalatest.wordspec.AnyWordSpec | ||
| import org.scalatestplus.scalacheck.ScalaCheckPropertyChecks | ||
| import com.epam.deltix.dfp.Decimal64Utils | ||
| import com.github.plokhotnyuk.jsoniter_scala.core.GenUtils._ | ||
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| import java.io._ | ||
| import java.nio.charset.StandardCharsets.UTF_8 | ||
| import scala.util.Random | ||
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| class Decimal64Spec extends AnyWordSpec with Matchers with ScalaCheckPropertyChecks { | ||
| "JsonWriter.writeDecimal64Val and JsonWriter.writeDecimal64ValAsString and JsonWriter.writeDecimal64Key for an underlying representation of Decimal64" should { | ||
| "write finite Decimal64 values" in { | ||
| def check(n: Long): Unit = { | ||
| val s = withWriter(_.writeDecimal64Val(n)) | ||
| print(s + " ") | ||
| Decimal64Utils.compareTo(Decimal64Utils.parse(s), n) shouldBe 0 // no data loss when parsing by JVM, Native or JS Platform | ||
| s.length should be <= 22 // length is 22 bytes or less | ||
| withWriter(_.writeDecimal64ValAsString(n)) shouldBe s""""$s"""" | ||
| withWriter(_.writeDecimal64Key(n)) shouldBe s""""$s":""" | ||
| } | ||
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| check(Decimal64Utils.ZERO) | ||
| check(Decimal64Utils.ONE) | ||
| check(Decimal64Utils.TEN) | ||
| check(Decimal64Utils.THOUSAND) | ||
| check(Decimal64Utils.MILLION) | ||
| check(Decimal64Utils.ONE_TENTH) | ||
| check(Decimal64Utils.ONE_HUNDREDTH) | ||
| check(Decimal64Utils.parse("1000.0")) | ||
| check(Decimal64Utils.parse("1000.001")) | ||
| forAll(arbitrary[Long], minSuccessful(10000)) { n => | ||
| whenever(Decimal64Utils.isFinite(n)) { | ||
| check(n) | ||
| } | ||
| } | ||
| forAll(genFiniteDouble, minSuccessful(10000)) { d => | ||
| check(Decimal64Utils.fromDouble(d)) | ||
| } | ||
| forAll(arbitrary[Long], minSuccessful(10000)) { l => | ||
| check(Decimal64Utils.fromFixedPoint(l >> 8, l.toByte)) | ||
| } | ||
| forAll(arbitrary[Long], minSuccessful(10000)) { l => | ||
| check(Decimal64Utils.fromLong(l)) | ||
| } | ||
| forAll(arbitrary[Int], minSuccessful(10000)) { i => | ||
| check(Decimal64Utils.fromInt(i)) | ||
| } | ||
| } | ||
| "throw i/o exception on non-finite numbers" in { | ||
| forAll(arbitrary[Long], minSuccessful(100)) { n => | ||
| whenever(Decimal64Utils.isNonFinite(n)) { | ||
| assert(intercept[JsonWriterException](withWriter(_.writeDecimal64Val(n))).getMessage.startsWith("illegal Decimal64 number")) | ||
| assert(intercept[JsonWriterException](withWriter(_.writeDecimal64ValAsString(n))).getMessage.startsWith("illegal Decimal64 number")) | ||
| assert(intercept[JsonWriterException](withWriter(_.writeDecimal64Key(n))).getMessage.startsWith("illegal Decimal64 number")) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| def reader(json: String, totalRead: Long = 0): JsonReader = reader2(json.getBytes(UTF_8), totalRead) | ||
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| def reader2(jsonBytes: Array[Byte], totalRead: Long = 0): JsonReader = | ||
| new JsonReader(new Array[Byte](Random.nextInt(20) + 12), // 12 is a minimal allowed length to test resizing of the buffer | ||
| 0, 0, -1, new Array[Char](Random.nextInt(32)), null, new ByteArrayInputStream(jsonBytes), totalRead, readerConfig) | ||
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| def readerConfig: ReaderConfig = ReaderConfig | ||
| .withPreferredBufSize(Random.nextInt(20) + 12) // 12 is a minimal allowed length to test resizing of the buffer | ||
| .withPreferredCharBufSize(Random.nextInt(32)) | ||
| .withThrowReaderExceptionWithStackTrace(true) | ||
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| def withWriter(f: JsonWriter => Unit): String = | ||
| withWriter(WriterConfig.withPreferredBufSize(1).withThrowWriterExceptionWithStackTrace(true))(f) | ||
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| def withWriter(cfg: WriterConfig)(f: JsonWriter => Unit): String = { | ||
| val writer = new JsonWriter(new Array[Byte](Random.nextInt(16)), 0, 0, 0, false, false, null, null, cfg) | ||
| new String(writer.write(new JsonValueCodec[String] { | ||
| override def decodeValue(in: JsonReader, default: String): String = "" | ||
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| override def encodeValue(x: String, out: JsonWriter): Unit = f(writer) | ||
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| override val nullValue: String = "" | ||
| }, "", cfg), "UTF-8") | ||
| } | ||
| } |