1 files changed, 113 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonArraySerializerTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonArraySerializerTest.kt
new file mode 100644
index 00000000..c571ec9e
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonArraySerializerTest.kt
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2017-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.json.serializers
+
+import kotlinx.serialization.json.*
+import kotlinx.serialization.test.*
+
+import kotlin.test.*
+
+class JsonArraySerializerTest : JsonTestBase() {
+
+    private val expected = "{\"array\":[1,null,[\"nested literal\"],[],{\"key\":\"value\"}]}"
+    private val expectedTopLevel = "[1,null,[\"nested literal\"],[],{\"key\":\"value\"}]"
+
+    @Test
+    fun testJsonArray() = parametrizedTest(default) {
+        assertStringFormAndRestored(expected, JsonArrayWrapper(prebuiltJson()), JsonArrayWrapper.serializer())
+    }
+
+    @Test
+    fun testJsonArrayAsElement() = parametrizedTest(default) {
+        assertStringFormAndRestored(expected.replace("array", "element"), JsonElementWrapper(prebuiltJson()), JsonElementWrapper.serializer())
+    }
+
+    @Test
+    fun testTopLevelJsonObjectAsElement() = parametrizedTest(default) {
+        assertStringFormAndRestored(expectedTopLevel, prebuiltJson(), JsonElement.serializer())
+    }
+
+    @Test
+    fun testJsonArrayToString() {
+        val prebuiltJson = prebuiltJson()
+        val string = lenient.encodeToString(JsonArray.serializer(), prebuiltJson)
+        assertEquals(string, prebuiltJson.toString())
+    }
+
+    @Test
+    fun testMixedLiterals() = parametrizedTest { jsonTestingMode ->
+        val json = """[1, "2", 3, "4"]"""
+        val array = default.decodeFromString(JsonArray.serializer(), json, jsonTestingMode)
+        array.forEachIndexed { index, element ->
+            require(element is JsonPrimitive)
+            assertEquals(index % 2 == 1, element.isString)
+        }
+    }
+
+    @Test
+    fun testMissingCommas() = parametrizedTest { jsonTestingMode ->
+        val message = "Expected end of the array or comma"
+        testFails("[a b c]", message, jsonTestingMode)
+        testFails("[ 1 2 3 ]", message, jsonTestingMode)
+        testFails("[null 1 null]", message, jsonTestingMode)
+        testFails("[1 \n 2]", message, jsonTestingMode)
+    }
+
+    @Test
+    fun testEmptyArray() = parametrizedTest { jsonTestingMode ->
+        assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[]", jsonTestingMode))
+        assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[    ]", jsonTestingMode))
+        assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[\n\n]", jsonTestingMode))
+        assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[     \t]", jsonTestingMode))
+    }
+
+    @Test
+    fun testWhitespaces() = parametrizedTest { jsonTestingMode ->
+        assertEquals(
+            JsonArray(listOf(1, 2, 3, 4, 5).map(::JsonPrimitive)),
+            lenient.decodeFromString(JsonArray.serializer(), "[1, 2,   3, \n 4, 5]", jsonTestingMode)
+        )
+    }
+
+    @Test
+    fun testExcessiveCommas() = parametrizedTest { jsonTestingMode ->
+        val trailing = "Unexpected trailing comma"
+        val leading = "Unexpected leading comma"
+        testFails("[a,]", trailing, jsonTestingMode)
+        testFails("[,1]", leading, jsonTestingMode)
+        testFails("[,1,]", leading, jsonTestingMode)
+        testFails("[,]", leading, jsonTestingMode)
+        testFails("[,,]", leading, jsonTestingMode)
+        testFails("[,,1]", leading, jsonTestingMode)
+        testFails("[1,,]", trailing, jsonTestingMode)
+        testFails("[1,,2]", trailing, jsonTestingMode)
+        testFails("[,   ,]", leading, jsonTestingMode)
+        testFails("[,\n,]", leading, jsonTestingMode)
+    }
+
+    private fun testFails(input: String, errorMessage: String, jsonTestingMode: JsonTestingMode) {
+        assertFailsWithSerial("JsonDecodingException", errorMessage) {
+            lenient.decodeFromString(
+                JsonArray.serializer(),
+                input,
+                jsonTestingMode
+            )
+        }
+    }
+
+    private fun prebuiltJson(): JsonArray {
+        return buildJsonArray {
+            add(1)
+            add(JsonNull)
+            addJsonArray {
+                add("nested literal")
+            }
+            addJsonArray {}
+            addJsonObject {
+                put("key", "value")
+            }
+        }
+    }
+}