UnknownKeysIntegrationTest.kt added with a test for query data (still need to add a test for mutation data)

Author: dconeybe

firebase-dataconnect/src/androidTest/kotlin/com/google/firebase/dataconnect/UnknownKeysIntegrationTest.kt

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * 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 com.google.firebase.dataconnect
+
+import com.google.firebase.dataconnect.testutil.DataConnectIntegrationTestBase
+import com.google.firebase.dataconnect.testutil.property.arbitrary.dataConnect
+import com.google.firebase.dataconnect.testutil.schemas.AllTypesSchema
+import io.kotest.matchers.shouldBe
+import io.kotest.property.Arb
+import io.kotest.property.arbitrary.next
+import kotlinx.coroutines.test.runTest
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.serializer
+import org.junit.Test
+
+class UnknownKeysIntegrationTest : DataConnectIntegrationTestBase() {
+
+  private val allTypesSchema by lazy { AllTypesSchema(dataConnectFactory) }
+
+  @Test
+  fun unknownKeysInQueryResponseDataShouldBeIgnored() = runTest {
+    val id = Arb.dataConnect.uuid().next()
+    allTypesSchema
+      .createPrimitive(
+        AllTypesSchema.PrimitiveData(
+          id = id,
+          idFieldNullable = "0d2fcdf1c4a84c64a87f3c7932b31749",
+          intField = 42,
+          intFieldNullable = 43,
+          floatField = 123.45,
+          floatFieldNullable = 678.91,
+          booleanField = true,
+          booleanFieldNullable = false,
+          stringField = "TestString",
+          stringFieldNullable = "TestNullableString"
+        )
+      )
+      .execute()
+
+    @Serializable
+    data class PrimitiveQueryDataValues(
+      val intFieldNullable: Int?,
+      val booleanField: Boolean,
+      val booleanFieldNullable: Boolean?,
+      val stringField: String,
+      val stringFieldNullable: String?,
+    )
+
+    /** An adaptation of [AllTypesSchema.GetPrimitiveQuery.Data] with some keys missing. */
+    @Serializable
+    data class PrimitiveQueryDataMissingSomeKeys(val primitive: PrimitiveQueryDataValues)
+
+    @OptIn(ExperimentalFirebaseDataConnect::class)
+    val result =
+      allTypesSchema
+        .getPrimitive(id = id)
+        .withDataDeserializer(serializer<PrimitiveQueryDataMissingSomeKeys>())
+        .execute()
+
+    result.data.primitive shouldBe
+      PrimitiveQueryDataValues(
+        intFieldNullable = 43,
+        booleanField = true,
+        booleanFieldNullable = false,
+        stringField = "TestString",
+        stringFieldNullable = "TestNullableString"
+      )
+  }
+}