1 files changed, 140 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonUnquotedLiteralTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonUnquotedLiteralTest.kt
new file mode 100644
index 00000000..e8090044
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/json/serializers/JsonUnquotedLiteralTest.kt
@@ -0,0 +1,140 @@
+package kotlinx.serialization.json.serializers
+
+import kotlinx.serialization.builtins.MapSerializer
+import kotlinx.serialization.json.*
+import kotlinx.serialization.test.assertFailsWithSerialMessage
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class JsonUnquotedLiteralTest : JsonTestBase() {
+
+    private fun assertUnquotedLiteralEncoded(inputValue: String) {
+        val unquotedElement = JsonUnquotedLiteral(inputValue)
+
+        assertEquals(
+            inputValue,
+            unquotedElement.toString(),
+            "expect JsonElement.toString() returns the unquoted input value"
+        )
+
+        parametrizedTest { mode ->
+            assertEquals(inputValue, default.encodeToString(JsonElement.serializer(), unquotedElement, mode))
+        }
+    }
+
+    @Test
+    fun testUnquotedJsonNumbers() {
+        assertUnquotedLiteralEncoded("1")
+        assertUnquotedLiteralEncoded("-1")
+        assertUnquotedLiteralEncoded("100.0")
+        assertUnquotedLiteralEncoded("-100.0")
+
+        assertUnquotedLiteralEncoded("9999999999999999999999999999999999999999999999999999999.9999999999999999999999999999999999999999999999999999999")
+        assertUnquotedLiteralEncoded("-9999999999999999999999999999999999999999999999999999999.9999999999999999999999999999999999999999999999999999999")
+
+        assertUnquotedLiteralEncoded("99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999")
+        assertUnquotedLiteralEncoded("-99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999")
+
+        assertUnquotedLiteralEncoded("2.99792458e8")
+        assertUnquotedLiteralEncoded("-2.99792458e8")
+
+        assertUnquotedLiteralEncoded("2.99792458E8")
+        assertUnquotedLiteralEncoded("-2.99792458E8")
+
+        assertUnquotedLiteralEncoded("11.399999999999")
+        assertUnquotedLiteralEncoded("0.30000000000000004")
+        assertUnquotedLiteralEncoded("0.1000000000000000055511151231257827021181583404541015625")
+    }
+
+    @Test
+    fun testUnquotedJsonWhitespaceStrings() {
+        assertUnquotedLiteralEncoded("")
+        assertUnquotedLiteralEncoded("         ")
+        assertUnquotedLiteralEncoded("\t")
+        assertUnquotedLiteralEncoded("\t\t\t")
+        assertUnquotedLiteralEncoded("\r\n")
+        assertUnquotedLiteralEncoded("\n")
+        assertUnquotedLiteralEncoded("\n\n\n")
+    }
+
+    @Test
+    fun testUnquotedJsonStrings() {
+        assertUnquotedLiteralEncoded("lorem")
+        assertUnquotedLiteralEncoded(""""lorem"""")
+        assertUnquotedLiteralEncoded(
+            """
+                Well, my name is Freddy Kreuger
+                I've got the Elm Street blues
+                I've got a hand like a knife rack
+                And I die in every film!
+            """.trimIndent()
+        )
+    }
+
+    @Test
+    fun testUnquotedJsonObjects() {
+        assertUnquotedLiteralEncoded("""{"some":"json"}""")
+        assertUnquotedLiteralEncoded("""{"some":"json","object":true,"count":1,"array":[1,2.0,-333,"4",boolean]}""")
+    }
+
+    @Test
+    fun testUnquotedJsonArrays() {
+        assertUnquotedLiteralEncoded("""[1,2,3]""")
+        assertUnquotedLiteralEncoded("""["a","b","c"]""")
+        assertUnquotedLiteralEncoded("""[true,false]""")
+        assertUnquotedLiteralEncoded("""[1,2.0,-333,"4",boolean]""")
+        assertUnquotedLiteralEncoded("""[{"some":"json","object":true,"count":1,"array":[1,2.0,-333,"4",boolean]}]""")
+        assertUnquotedLiteralEncoded("""[{"some":"json","object":true,"count":1,"array":[1,2.0,-333,"4",boolean]},{"some":"json","object":true,"count":1,"array":[1,2.0,-333,"4",boolean]}]""")
+    }
+
+    @Test
+    fun testUnquotedJsonNull() {
+        assertEquals(JsonNull, JsonUnquotedLiteral(null))
+    }
+
+    @Test
+    fun testUnquotedJsonNullString() {
+        fun test(block: () -> Unit) {
+            assertFailsWithSerialMessage(
+                exceptionName = "JsonEncodingException",
+                message = "Creating a literal unquoted value of 'null' is forbidden. If you want to create JSON null literal, use JsonNull object, otherwise, use JsonPrimitive",
+                block = block,
+            )
+        }
+
+        test { JsonUnquotedLiteral("null") }
+        test { JsonUnquotedLiteral(JsonNull.content) }
+        test { buildJsonObject { put("key", JsonUnquotedLiteral("null")) } }
+    }
+
+    @Test
+    fun testUnquotedJsonInvalidMapKeyIsEscaped() {
+        val mapSerializer = MapSerializer(
+            JsonPrimitive.serializer(),
+            JsonPrimitive.serializer(),
+        )
+
+        fun test(expected: String, input: String) = parametrizedTest { mode ->
+            val data = mapOf(JsonUnquotedLiteral(input) to JsonPrimitive("invalid key"))
+
+            assertEquals(
+                """ {"$expected":"invalid key"} """.trim(),
+                default.encodeToString(mapSerializer, data, mode),
+            )
+        }
+
+        test(" ", " ")
+        test(
+            """ \\\"\\\" """.trim(),
+            """  \"\"    """.trim(),
+        )
+        test(
+            """  \\\\\\\"  """.trim(),
+            """  \\\"      """.trim(),
+        )
+        test(
+            """  {\\\"I'm not a valid JSON object key\\\"}  """.trim(),
+            """  {\"I'm not a valid JSON object key\"}      """.trim(),
+        )
+    }
+}