add deserializer test

Author: pjfanning

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
       - name: Check that workflows are up to date
-        run: sbt -J-Xmx2G '++${{ matrix.scala }}' 'project /' githubWorkflowCheck
+        run: sbt -J-Xmx2G githubWorkflowCheck
 
       - run: sbt -J-Xmx2G '++${{ matrix.scala }}' test mimaReportBinaryIssues
 

project/plugins.sbt

@@ -8,7 +8,7 @@ addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.6.3")
 
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.0")
 
-addSbtPlugin("org.typelevel" % "sbt-typelevel-sonatype-ci-release" % "0.5.0-M5")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-sonatype-ci-release" % "0.5.0-M6")
 
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.10")
 

src/test/scala/com/fasterxml/jackson/module/scala/deser/IgnorableFieldDeserializerTest.scala

@@ -0,0 +1,36 @@
+package com.fasterxml.jackson.module.scala.deser
+
+import com.fasterxml.jackson.databind.DeserializationFeature
+import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException
+import com.fasterxml.jackson.module.scala.deser.IgnorableFieldDeserializerTest.ExtractFields
+import com.fasterxml.jackson.module.scala.{DefaultScalaModule, JacksonModule}
+
+object IgnorableFieldDeserializerTest {
+  case class ExtractFields(s: String, i: Int)
+}
+
+class IgnorableFieldDeserializerTest extends DeserializerTest {
+
+  lazy val module: JacksonModule = DefaultScalaModule
+
+  "An ObjectMapper with the DefaultScalaModule" should "fail if field is not expected" in {
+    val mapper = newMapper
+    intercept[UnrecognizedPropertyException] {
+      mapper.readValue(genJson(100), classOf[ExtractFields])
+    }
+  }
+
+  it should "succeed if field is not expected" in {
+    val mapper = newBuilder
+      .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
+      .build()
+    val ef = mapper.readValue(genJson(1000), classOf[ExtractFields])
+    ef.s shouldEqual "s"
+    ef.i shouldEqual 1
+  }
+
+  private def genJson(size: Int): String = {
+    s"""{"s":"s","n":${"7" * size},"i":1}"""
+  }
+
+}