Add test for skipping map

mirai-core-qqandroid/src/commonTest/kotlin/net.mamoe.mirai.qqandroid.io.serialization/JceInputTest.kt

@@ -42,6 +42,73 @@ internal const val ZERO_TYPE: Byte = 12
 @Suppress("INVISIBLE_MEMBER") // bug
 internal class JceInputTest {
 
+    @Test
+    fun testSkippingMap() {
+        @Serializable
+        data class TestSerializableClassC(
+            @JceId(5) val value3: Int = 123123
+        )
+
+        @Serializable
+        data class TestSerializableClassB(
+            @JceId(0) val value: Int,
+            @JceId(123) val nested2: TestSerializableClassC,
+            @JceId(5) val value5: Int
+        )
+
+        @Serializable
+        data class TestSerializableClassA(
+            //@JceId(0) val map: Map<TestSerializableClassB, TestSerializableClassC>
+            @JceId(1) val optional: String = ""
+        )
+
+
+        val input = buildPacket {
+            writeJceHead(MAP, 0) // TestSerializableClassB
+            writeJceHead(BYTE, 0)
+            writeByte(1)
+
+            writeJceHead(STRUCT_BEGIN, 0);
+            {
+                writeJceHead(INT, 0)
+                writeInt(123)
+
+                writeJceHead(STRUCT_BEGIN, 123); // TestSerializableClassC
+                {
+                    writeJceHead(INT, 5)
+                    writeInt(123123)
+                }()
+                writeJceHead(STRUCT_END, 0)
+
+                writeJceHead(INT, 5)
+                writeInt(9)
+            }()
+            writeJceHead(STRUCT_END, 0)
+
+            writeJceHead(STRUCT_BEGIN, 1);
+            {
+                writeJceHead(INT, 5)
+                writeInt(123123)
+            }()
+            writeJceHead(STRUCT_END, 0)
+
+            writeJceHead(STRING1, 1)
+            writeByte(1)
+            writeStringUtf8("1")
+        }
+
+        assertEquals(
+            TestSerializableClassA(
+                /*mapOf(
+                    TestSerializableClassB(123, TestSerializableClassC(123123), 9)
+                            to TestSerializableClassC(123123)
+                )*/
+                "1"
+            ),
+            Jce.UTF_8.load(TestSerializableClassA.serializer(), input)
+        )
+    }
+
     @Test
     fun testFuckingComprehensiveStruct() {
         @Serializable