Create ActionSerializerSuite.scala

kernel/kernel-defaults/src/test/scala/io/delta/kernel/defaults/ActionSerializerSuite.scala

@@ -0,0 +1,50 @@
+/*
+ * Copyright (2024) The Delta Lake Project Authors.
+ *
+ * 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 io.delta.kernel.defaults;
+
+import io.delta.kernel.defaults.internal.json.JsonUtils
+import io.delta.kernel.internal.actions.Protocol
+import org.scalatest.funsuite.AnyFunSuite
+
+import java.util.Collections
+import scala.collection.JavaConverters._
+
+// TODO: this class should actually write the actions to a json file and read them back
+// TODO: do this for all action types
+class ActionSerializerSuite extends AnyFunSuite {
+  test("protocol to json") {
+    {
+      val protocol = new Protocol(1, 2, Collections.emptySet(), Collections.emptySet())
+      val json = JsonUtils.rowToJson(protocol.toRow)
+      assert(json === """{"minReaderVersion":1,"minWriterVersion":2}""")
+    }
+    {
+      val protocol = new Protocol(3, 7, Collections.emptySet(), Collections.emptySet())
+      val json = JsonUtils.rowToJson(protocol.toRow)
+      // scalastyle:off line.size.limit
+      assert(json === """{"minReaderVersion":3,"minWriterVersion":7,"readerFeatures":[],"writerFeatures":[]}""")
+      // scalastyle:on line.size.limit
+    }
+    {
+      val protocol = new Protocol(3, 7, Set("columnMapping").asJava, Set("appendOnly").asJava)
+      val json = JsonUtils.rowToJson(protocol.toRow)
+      // scalastyle:off line.size.limit
+      assert(json === """{"minReaderVersion":3,"minWriterVersion":7,"readerFeatures":["columnMapping"],"writerFeatures":["appendOnly"]}""")
+      // scalastyle:on line.size.limit
+    }
+  }
+}