1 files changed, 55 insertions, 0 deletions
diff --git a/formats/json-tests/nativeTest/src/kotlinx/serialization/json/MultiWorkerJsonTest.kt b/formats/json-tests/nativeTest/src/kotlinx/serialization/json/MultiWorkerJsonTest.kt
new file mode 100644
index 00000000..2ea063db
--- /dev/null
+++ b/formats/json-tests/nativeTest/src/kotlinx/serialization/json/MultiWorkerJsonTest.kt
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.json
+
+import kotlinx.serialization.*
+import kotlin.native.concurrent.*
+import kotlin.test.*
+
+class MultiWorkerJsonTest {
+    @Serializable
+    data class PlainOne(val one: Int)
+
+    @Serializable
+    data class PlainTwo(val two: Int)
+
+    private fun doTest(json: () -> Json) {
+        val worker = Worker.start()
+        val operation = {
+            for (i in 0..999) {
+                assertEquals(PlainOne(42), json().decodeFromString("""{"one":42,"two":239}"""))
+            }
+        }
+        worker.executeAfter(1000, operation.freeze())
+        for (i in 0..999) {
+            assertEquals(PlainTwo(239), json().decodeFromString("""{"one":42,"two":239}"""))
+        }
+        worker.requestTermination()
+    }
+
+
+    @Test
+    fun testJsonIsFreezeSafe() {
+        val json = Json {
+            isLenient = true
+            ignoreUnknownKeys = true
+            useAlternativeNames = true
+        }
+        // reuse instance
+        doTest { json }
+    }
+
+    @Test
+    fun testJsonInstantiation() {
+        // create new instanceEveryTime
+        doTest {
+            Json {
+                isLenient = true
+                ignoreUnknownKeys = true
+                useAlternativeNames = true
+            }
+        }
+    }
+}