/
JsonCodecMacrosSuite.scala
198 lines (157 loc) · 6.49 KB
/
JsonCodecMacrosSuite.scala
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package io.circe.generic
import cats.kernel.Eq
import cats.instances.AllInstances
import io.circe.{ Decoder, Encoder }
import io.circe.generic.jsoncodecmacrossuiteaux._
import io.circe.testing.{ ArbitraryInstances, CodecTests }
import io.circe.tests.{ CirceSuite, MissingInstances }
import org.scalacheck.{ Arbitrary, Gen }
package object jsoncodecmacrossuiteaux extends AnyRef with AllInstances with ArbitraryInstances with MissingInstances
package jsoncodecmacrossuiteaux {
// Simple
@JsonCodec final case class Simple(i: Int, l: Long, s: String)
object Simple {
implicit def eqSimple: Eq[Simple] = Eq.by(s => (s.i, s.l, s.s))
implicit def arbitrarySimple: Arbitrary[Simple] =
Arbitrary(
for {
i <- Arbitrary.arbitrary[Int]
l <- Arbitrary.arbitrary[Long]
s <- Arbitrary.arbitrary[String]
} yield Simple(i, l, s)
)
}
// Single
@JsonCodec final case class Single(i: Int)
object Single {
implicit def eqSingle: Eq[Single] = Eq.by(_.i)
implicit def arbitrarySingle: Arbitrary[Single] =
Arbitrary(Arbitrary.arbitrary[Int].map(Single(_)))
}
// Typed1
@JsonCodec final case class Typed1[A](i: Int, a: A, j: Int)
object Typed1 {
implicit def eqTyped1[A: Eq]: Eq[Typed1[A]] = Eq.by(t => (t.i, t.a, t.j))
implicit def arbitraryTyped1[A](implicit A: Arbitrary[A]): Arbitrary[Typed1[A]] =
Arbitrary(
for {
i <- Arbitrary.arbitrary[Int]
a <- A.arbitrary
j <- Arbitrary.arbitrary[Int]
} yield Typed1(i, a, j)
)
}
// Typed2
@JsonCodec final case class Typed2[A, B](i: Int, a: A, b: B, j: Int)
object Typed2 {
implicit def eqTyped2[A: Eq, B: Eq]: Eq[Typed2[A, B]] = Eq.by(t => (t.i, t.a, t.b, t.j))
implicit def arbitraryTyped2[A, B](implicit A: Arbitrary[A], B: Arbitrary[B]): Arbitrary[Typed2[A, B]] =
Arbitrary(
for {
i <- Arbitrary.arbitrary[Int]
a <- A.arbitrary
b <- B.arbitrary
j <- Arbitrary.arbitrary[Int]
} yield Typed2(i, a, b, j)
)
}
// Access modifier
@JsonCodec private[circe] final case class AccessModifier(a: Int)
private[circe] object AccessModifier {
implicit def eqAccessModifier: Eq[AccessModifier] = Eq.fromUniversalEquals
implicit def arbitraryAccessModifier: Arbitrary[AccessModifier] =
Arbitrary(
for {
a <- Arbitrary.arbitrary[Int]
} yield AccessModifier(a)
)
}
// Hierarchy
@JsonCodec sealed trait Hierarchy
final case class Hierarchy1(i: Int, s: String) extends Hierarchy
final case class Hierarchy2(xs: List[String]) extends Hierarchy
final case class Hierarchy3(s: Single, d: Double) extends Hierarchy
object Hierarchy {
implicit val eqHierarchy: Eq[Hierarchy] = Eq.fromUniversalEquals
implicit val arbitraryHierarchy: Arbitrary[Hierarchy] = Arbitrary(
Gen.oneOf(
for {
i <- Arbitrary.arbitrary[Int]
s <- Arbitrary.arbitrary[String]
} yield Hierarchy1(i, s),
Gen.listOf(Arbitrary.arbitrary[String]).map(Hierarchy2.apply),
for {
s <- Arbitrary.arbitrary[Single]
d <- Arbitrary.arbitrary[Double]
} yield Hierarchy3(s, d)
)
)
}
// RecursiveHierarchy
@JsonCodec sealed trait RecursiveHierarchy
final case class BaseRecursiveHierarchy(a: String) extends RecursiveHierarchy
final case class NestedRecursiveHierarchy(r: RecursiveHierarchy) extends RecursiveHierarchy
object RecursiveHierarchy {
implicit val eqRecursiveHierarchy: Eq[RecursiveHierarchy] = Eq.fromUniversalEquals
private def atDepth(depth: Int): Gen[RecursiveHierarchy] = if (depth < 3)
Gen.oneOf(
Arbitrary.arbitrary[String].map(BaseRecursiveHierarchy(_)),
atDepth(depth + 1).map(NestedRecursiveHierarchy(_))
)
else Arbitrary.arbitrary[String].map(BaseRecursiveHierarchy(_))
implicit val arbitraryRecursiveHierarchy: Arbitrary[RecursiveHierarchy] =
Arbitrary(atDepth(0))
}
// SelfRecursiveWithOption
@JsonCodec final case class SelfRecursiveWithOption(o: Option[SelfRecursiveWithOption])
object SelfRecursiveWithOption {
implicit val eqSelfRecursiveWithOption: Eq[SelfRecursiveWithOption] = Eq.fromUniversalEquals
private def atDepth(depth: Int): Gen[SelfRecursiveWithOption] = if (depth < 3)
Gen.oneOf(
Gen.const(SelfRecursiveWithOption(None)),
atDepth(depth + 1).map(Some(_)).map(SelfRecursiveWithOption(_))
)
else Gen.const(SelfRecursiveWithOption(None))
implicit val arbitrarySelfRecursiveWithOption: Arbitrary[SelfRecursiveWithOption] =
Arbitrary(atDepth(0))
}
}
class JsonCodecMacrosSuite extends CirceSuite {
checkLaws("Codec[Simple]", CodecTests[Simple].codec)
checkLaws("Codec[Single]", CodecTests[Single].codec)
checkLaws("Codec[Typed1[Int]]", CodecTests[Typed1[Int]].codec)
checkLaws("Codec[Typed2[Int, Long]]", CodecTests[Typed2[Int, Long]].codec)
checkLaws("Codec[AccessModifier]", CodecTests[AccessModifier].codec)
checkLaws("Codec[Hierarchy]", CodecTests[Hierarchy].codec)
checkLaws("Codec[RecursiveHierarchy]", CodecTests[RecursiveHierarchy].codec)
checkLaws("Codec[SelfRecursiveWithOption]", CodecTests[SelfRecursiveWithOption].codec)
"@JsonCodec" should "provide Encoder.AsObject instances" in {
Encoder.AsObject[Simple]
Encoder.AsObject[Single]
Encoder.AsObject[Typed1[Int]]
Encoder.AsObject[Typed2[Int, Long]]
Encoder.AsObject[AccessModifier]
Encoder.AsObject[Hierarchy]
Encoder.AsObject[RecursiveHierarchy]
Encoder.AsObject[SelfRecursiveWithOption]
}
it should "allow only one, named argument set to true" in {
// Can't supply both
assertDoesNotCompile("@JsonCodec(encodeOnly = true, decodeOnly = true) case class X(a: Int)")
// Must specify the argument name
assertDoesNotCompile("@JsonCodec(true) case class X(a: Int)")
// Can't specify false
assertDoesNotCompile("@JsonCodec(encodeOnly = false) case class X(a: Int)")
}
"@JsonCodec(encodeOnly = true)" should "only provide Encoder instances" in {
@JsonCodec(encodeOnly = true) case class CaseClassEncodeOnly(foo: String, bar: Int)
Encoder[CaseClassEncodeOnly]
Encoder.AsObject[CaseClassEncodeOnly]
assertDoesNotCompile("Decoder[CaseClassEncodeOnly]")
}
"@JsonCodec(decodeOnly = true)" should "provide Decoder instances" in {
@JsonCodec(decodeOnly = true) case class CaseClassDecodeOnly(foo: String, bar: Int)
Decoder[CaseClassDecodeOnly]
assertDoesNotCompile("Encoder[CaseClassDecodeOnly]")
}
}