1 files changed, 160 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonParserFailureModesTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonParserFailureModesTest.kt
new file mode 100644
index 00000000..892696b8
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonParserFailureModesTest.kt
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2017-2020 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 kotlinx.serialization.test.*
+import kotlin.test.*
+
+class JsonParserFailureModesTest : JsonTestBase() {
+
+    @Serializable
+    data class Holder(
+        val id: Long
+    )
+
+    @Test
+    fun testFailureModes() = parametrizedTest {
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id": "}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id": ""}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id":a}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id":2.0}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id2":2}""",
+                it
+            )
+        }
+        // 9223372036854775807 is Long.MAX_VALUE
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id":${Long.MAX_VALUE}""" + "00" + "}",
+                it
+            )
+        }
+        // -9223372036854775808 is Long.MIN_VALUE
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                Holder.serializer(),
+                """{"id":9223372036854775808}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{"id"}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{"id}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{"i}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{"}""", it) }
+        assertFailsWithMissingField { default.decodeFromString(Holder.serializer(), """{}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString(Holder.serializer(), """{""", it) }
+    }
+
+    @Serializable
+    class BooleanHolder(val b: Boolean)
+
+    @Test
+    fun testBoolean() = parametrizedTest {
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                BooleanHolder.serializer(),
+                """{"b": fals}""",
+                it
+            )
+        }
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString(
+                BooleanHolder.serializer(),
+                """{"b": 123}""",
+                it
+            )
+        }
+    }
+
+    @Serializable
+    class PrimitiveHolder(
+        val b: Byte = 0, val s: Short = 0, val i: Int = 0
+    )
+
+    @Test
+    fun testOverflow() = parametrizedTest {
+        // Byte overflow
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<PrimitiveHolder>("""{"b": 128}""", it) }
+        // Short overflow
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<PrimitiveHolder>("""{"s": 32768}""", it) }
+        // Int overflow
+        assertFailsWithSerial("JsonDecodingException") {
+            default.decodeFromString<PrimitiveHolder>(
+                """{"i": 2147483648}""",
+                it
+            )
+        }
+    }
+
+    @Test
+    fun testNoOverflow() = parametrizedTest {
+        default.decodeFromString<PrimitiveHolder>("""{"b": ${Byte.MAX_VALUE}}""", it)
+        default.decodeFromString<PrimitiveHolder>("""{"b": ${Byte.MIN_VALUE}}""", it)
+        default.decodeFromString<PrimitiveHolder>("""{"s": ${Short.MAX_VALUE}}""", it)
+        default.decodeFromString<PrimitiveHolder>("""{"s": ${Short.MIN_VALUE}}""", it)
+        default.decodeFromString<PrimitiveHolder>("""{"i": ${Int.MAX_VALUE}}""", it)
+        default.decodeFromString<PrimitiveHolder>("""{"i": ${Int.MIN_VALUE}}""", it)
+        default.decodeFromString<Holder>("""{"id": ${Long.MIN_VALUE.toString()}}""", it)
+        default.decodeFromString<Holder>("""{"id": ${Long.MAX_VALUE.toString()}}""", it)
+    }
+
+    @Test
+    fun testInvalidNumber() = parametrizedTest {
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":-}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":+}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":--}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":1-1}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":0-1}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":0-}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":a}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<Holder>("""{"id":-a}""", it) }
+    }
+
+
+    @Serializable
+    data class BooleanWrapper(val b: Boolean)
+
+    @Serializable
+    data class StringWrapper(val s: String)
+
+    @Test
+    fun testUnexpectedNull() = parametrizedTest {
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<BooleanWrapper>("""{"b":{"b":"b"}}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<BooleanWrapper>("""{"b":null}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<StringWrapper>("""{"s":{"s":"s"}}""", it) }
+        assertFailsWithSerial("JsonDecodingException") { default.decodeFromString<StringWrapper>("""{"s":null}""", it) }
+    }
+}