From a6d1f30e89759c14d0581a8c5c84e276c2594132 Mon Sep 17 00:00:00 2001
From: Artem Kobzar <artem.kobzar@jetbrains.com>
Date: Wed, 7 Sep 2022 12:46:45 +0000
Subject: [PATCH] chore: generate extra files.

---
 .../interfaces-in-exported-file/interfaces.d.ts       |  7 +++++++
 .../interfaces-in-exported-file/interfaces.kt         | 11 +++++++++++
 .../interfaces-in-exported-file/interfaces__main.js   |  4 ++++
 .../interfaces-in-exported-file/interfaces__main.ts   |  5 +++++
 4 files changed, 27 insertions(+)

diff --git a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.d.ts b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.d.ts
index 06fd2f146aa..7a8cadd01cc 100644
--- a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.d.ts
+++ b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.d.ts
@@ -1,5 +1,11 @@
 declare namespace JS_TESTS {
     type Nullable<T> = T | null | undefined
+    namespace foo {
+        interface OptionalFieldsInterface {
+            readonly required: number;
+            readonly notRequired?: Nullable<number>;
+        }
+    }
     namespace foo {
         interface TestInterface {
             readonly value: string;
@@ -24,5 +30,6 @@ declare namespace JS_TESTS {
             readonly __doNotUseOrImplementIt: foo.TestInterfaceImpl["__doNotUseOrImplementIt"] & foo.AnotherExportedInterface["__doNotUseOrImplementIt"];
         }
         function processInterface(test: foo.TestInterface): string;
+        function processOptionalInterface(a: foo.OptionalFieldsInterface): string;
     }
 }
\ No newline at end of file
diff --git a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.kt b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.kt
index d60a07badf8..0697bba8fea 100644
--- a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.kt
+++ b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces.kt
@@ -34,4 +34,15 @@ class ChildTestInterfaceImpl(): TestInterfaceImpl("Test"), AnotherExportedInterf
 
 fun processInterface(test: TestInterface): String {
     return "Owner ${test.getOwnerName()} has value '${test.value}'"
+}
+
+
+external interface OptionalFieldsInterface {
+    val required: Int
+    val notRequired: Int?
+}
+
+
+fun processOptionalInterface(a: OptionalFieldsInterface): String {
+    return "${a.required}${a.notRequired ?: "unknown"}"
 }
\ No newline at end of file
diff --git a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.js b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.js
index f3aba8a8c27..72a187b6c99 100644
--- a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.js
+++ b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.js
@@ -2,6 +2,7 @@
 var TestInterfaceImpl = JS_TESTS.foo.TestInterfaceImpl;
 var ChildTestInterfaceImpl = JS_TESTS.foo.ChildTestInterfaceImpl;
 var processInterface = JS_TESTS.foo.processInterface;
+var processOptionalInterface = JS_TESTS.foo.processOptionalInterface;
 function assert(condition) {
     if (!condition) {
         throw "Assertion failed";
@@ -12,5 +13,8 @@ function box() {
     assert(processInterface(new ChildTestInterfaceImpl()) === "Owner TestInterfaceImpl has value 'Test'");
     // @ts-expect-error "Just test that this code will throw compilation error for a user"
     assert(processInterface({ value: "bar", getOwnerName: function () { return "RandomObject"; } }) === "Owner RandomObject has value 'bar'");
+    assert(processOptionalInterface({ required: 4 }) == "4unknown");
+    assert(processOptionalInterface({ required: 4, notRequired: null }) == "4unknown");
+    assert(processOptionalInterface({ required: 4, notRequired: 5 }) == "45");
     return "OK";
 }
diff --git a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.ts b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.ts
index c16a4278309..de5842b2b27 100644
--- a/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.ts
+++ b/js/js.translator/testData/typescript-export/interfaces-in-exported-file/interfaces__main.ts
@@ -1,6 +1,7 @@
 import TestInterfaceImpl = JS_TESTS.foo.TestInterfaceImpl;
 import ChildTestInterfaceImpl = JS_TESTS.foo.ChildTestInterfaceImpl;
 import processInterface = JS_TESTS.foo.processInterface;
+import processOptionalInterface = JS_TESTS.foo.processOptionalInterface;
 
 function assert(condition: boolean) {
     if (!condition) {
@@ -15,5 +16,9 @@ function box(): string {
     // @ts-expect-error "Just test that this code will throw compilation error for a user"
     assert(processInterface({ value: "bar", getOwnerName: () => "RandomObject" }) === "Owner RandomObject has value 'bar'")
 
+    assert(processOptionalInterface({ required: 4 }) == "4unknown")
+    assert(processOptionalInterface({ required: 4, notRequired: null }) == "4unknown")
+    assert(processOptionalInterface({ required: 4, notRequired: 5 }) == "45")
+
     return "OK";
 }
\ No newline at end of file