test(KT-31614): fixate behavior of serialization/deserialization of UTF characters.

js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/InvalidationTestGenerated.java

@@ -170,6 +170,11 @@ public class InvalidationTestGenerated extends AbstractInvalidationTest {
         runTest("js/js.translator/testData/incremental/invalidation/transitiveInlineFunction/");
     }
 
+    @TestMetadata("unicodeSerializationAndDeserialization")
+    public void testUnicodeSerializationAndDeserialization() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/");
+    }
+
     @TestMetadata("variance")
     public void testVariance() throws Exception {
         runTest("js/js.translator/testData/incremental/invalidation/variance/");

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib1/l1.kt

@@ -0,0 +1 @@
+fun foo() = "\uD800"

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib1/l1.kt.1.txt

@@ -0,0 +1 @@
+fun foo() = "\uDB6A"

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib1/module.info

@@ -0,0 +1,11 @@
+STEP 0:
+    dependencies: stdlib
+    dirty: l1.kt
+STEP 1:
+    dependencies: stdlib
+    modifications:
+        U : l1.kt.1.txt -> l1.kt
+    dirty: l1.kt
+STEP 2:
+    flags: FP
+    dependencies: stdlib

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib2/l2.kt

@@ -0,0 +1,2 @@
+fun qux() = foo()
+fun quz() = bar()

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib2/module.info

@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib, lib1, lib3
+    dirty: l2.kt
+STEP 1:
+    dependencies: stdlib, lib1, lib3
+STEP 2:
+    dependencies: stdlib, lib1, lib3

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib3/l3.kt

@@ -0,0 +1 @@
+fun bar() = "\uD800"

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib3/l3.kt.2.txt

@@ -0,0 +1 @@
+fun bar() = "\uDFFF"

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/lib3/module.info

@@ -0,0 +1,11 @@
+STEP 0:
+    dependencies: stdlib
+    dirty: l3.kt
+STEP 1:
+    dependencies: stdlib
+    flags: FP
+STEP 2:
+    dependencies: stdlib
+    modifications:
+        U : l3.kt.2.txt -> l3.kt
+    dirty: l3.kt

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/main/m.kt

@@ -0,0 +1,24 @@
+
+fun box(step: Int): String {
+    return when (step) {
+        0 -> checkStep(step, qux = "\uD800", quz = "\uD800")
+        1 -> checkStep(step, qux = "\uDB6A", quz = "\uD800")
+        2 -> checkStep(step, qux = "\uDB6A", quz = "\uDFFF")
+        else -> "Unknown Step"
+    }
+}
+
+fun checkStep(step: Int, qux: String, quz: String): String {
+    val a = qux()
+    val b = quz()
+
+    if (a != qux || a == "?") {
+        return "Fail(qux): Step $step"
+    }
+
+    if (b != quz || b == "?") {
+        return "Fail(quz): Step $step"
+    }
+
+    return "OK"
+}

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/main/module.info

@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib, lib1, lib2, lib3
+    dirty: m.kt
+STEP 1:
+    dependencies: stdlib, lib1, lib2, lib3
+STEP 2:
+    dependencies: stdlib, lib1, lib2, lib3

js/js.translator/testData/incremental/invalidation/unicodeSerializationAndDeserialization/project.info

@@ -0,0 +1,11 @@
+MODULES: lib1, lib3, lib2, main
+
+STEP 0:
+    libs: lib1, lib3, lib2, main
+    dirty js: stdlib, lib1, lib2, lib3, main
+STEP 1:
+    libs: lib1, lib3, lib2, main
+    dirty js: lib1
+STEP 2:
+    libs: lib1, lib3, lib2, main
+    dirty js: lib3