Add test for ignoring the transformer when overrides are present

scalalandio · Sep 15, 2023 · 78ac85e · 78ac85e
1 parent 16d1f88
commit 78ac85e
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diff --git a/chimney/src/test/scala/io/scalaland/chimney/PartialTransformerImplicitResolutionSpec.scala b/chimney/src/test/scala/io/scalaland/chimney/PartialTransformerImplicitResolutionSpec.scala
@@ -3,6 +3,8 @@ package io.scalaland.chimney
 import io.scalaland.chimney.dsl.*
 import io.scalaland.chimney.fixtures.*
 
+import scala.annotation.unused
+
 class PartialTransformerImplicitResolutionSpec extends ChimneySpec {
 
   test("transform using implicit Total Transformer for whole transformation when available") {
@@ -68,4 +70,17 @@ class PartialTransformerImplicitResolutionSpec extends ChimneySpec {
     result2.asEither ==> Right(expected)
     result2.asErrorPathMessageStrings ==> Iterable.empty
   }
+
+  test("ignore implicit Partial Transformer if an override is present") {
+    import trip.*
+
+    @unused implicit def instance: PartialTransformer[Person, User] = PartialTransformer.derive
+
+    val expected = User("Not John", 10, 140)
+
+    val result = Person("John", 10, 140).intoPartial[User].withFieldConst(_.name, "Not John").transform
+    result.asOption ==> Some(expected)
+    result.asEither ==> Right(expected)
+    result.asErrorPathMessageStrings ==> Iterable.empty
+  }
 }
diff --git a/chimney/src/test/scala/io/scalaland/chimney/TotalTransformerImplicitResolutionSpec.scala b/chimney/src/test/scala/io/scalaland/chimney/TotalTransformerImplicitResolutionSpec.scala
@@ -3,6 +3,8 @@ package io.scalaland.chimney
 import io.scalaland.chimney.dsl.*
 import io.scalaland.chimney.fixtures.*
 
+import scala.annotation.unused
+
 class TotalTransformerImplicitResolutionSpec extends ChimneySpec {
 
   test("transform using implicit Total Transformer for whole transformation when available") {
@@ -29,4 +31,12 @@ class TotalTransformerImplicitResolutionSpec extends ChimneySpec {
     Person("John", 10, 140).into[User].transform ==> User("John", 10, 140)
     Person("John", 10, 140).transformInto[User] ==> User("John", 10, 140)
   }
+
+  test("ignore implicit Total Transformer if an override is present") {
+    import trip.*
+
+    @unused implicit def instance: Transformer[Person, User] = Transformer.derive
+
+    Person("John", 10, 140).into[User].withFieldConst(_.name, "Not John").transform ==> User("Not John", 10, 140)
+  }
 }