JS: add some tests to ensure that AST metadata is correctly serialized and deserialized and visible to JS optimizer

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java

@@ -3449,6 +3449,18 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
             doTest(fileName);
         }
 
+        @TestMetadata("defaultArguments.kt")
+        public void testDefaultArguments() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/incremental/defaultArguments.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("exportedPackage.kt")
+        public void testExportedPackage() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/incremental/exportedPackage.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("inline.kt")
         public void testInline() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/incremental/inline.kt");
@@ -3460,6 +3472,12 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
             String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/incremental/simple.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("syntheticStatement.kt")
+        public void testSyntheticStatement() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/incremental/syntheticStatement.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("js/js.translator/testData/box/inheritance")

js/js.translator/testData/box/incremental/defaultArguments.kt

@@ -0,0 +1,14 @@
+// FILE: a.kt
+
+inline fun foo(f: (Int) -> String, x: Int = 23): String = "foo(${f(x)})"
+
+
+// FILE: b.kt
+// RECOMPILE
+
+fun box(): String {
+    val result = foo({ it.toString() }) + foo({ it.toString() }, 42)
+    if (result != "foo(23)foo(42)") return "fail: $result"
+
+    return "OK"
+}

js/js.translator/testData/box/incremental/exportedPackage.kt

@@ -0,0 +1,15 @@
+// FILE: a.kt
+package foo.bar
+
+fun o() = "O"
+
+// FILE: b.kt
+package foo.bar
+
+fun k() = "K"
+
+// FILE: c.kt
+// RECOMPILE
+package foo.bar
+
+fun box() = o() + k()

js/js.translator/testData/box/incremental/syntheticStatement.kt

@@ -0,0 +1,25 @@
+/// FILE: a.kt
+
+fun a() = "["
+
+fun b() = "]"
+
+inline fun sideEffect(f: () -> String, g: () -> Unit): String {
+    g()
+    return f()
+}
+
+inline fun foo(f: () -> String, g: () -> Unit): String {
+    return a() + sideEffect(f, g) + b()
+}
+
+
+// FILE: b.kt
+// RECOMPILE
+
+fun box(): String {
+    val result = foo({ "*" }, { })
+    if (result != "[*]") return "fail: $result"
+
+    return "OK"
+}