JS backend: test for toGenerator from stdlib

js/js.tests/test/org/jetbrains/k2js/test/semantics/MiscTest.java

@@ -189,4 +189,8 @@ public final class MiscTest extends AbstractExpressionTest {
     public void testRightAssocForGeneratedConditionalOperator() throws Exception {
         checkFooBoxIsOk();
     }
+
+    public void testToGeneratorInStdlib() throws Exception {
+        checkFooBoxIsOk();
+    }
 }

js/js.translator/testData/expression/misc/cases/toGeneratorInStdlib.kt

@@ -0,0 +1,19 @@
+package foo
+
+fun streamFromFunctionWithInitialValue() {
+    val values = stream(3) { n -> if (n > 0) n - 1 else null }
+    assertEquals(arrayListOf(3, 2, 1, 0), values.toList())
+}
+
+fun iterateOverFunction() {
+    val values = iterate<Int>(3) { n -> if (n > 0) n - 1 else null }
+    assertEquals(arrayList(3, 2, 1, 0), values.toList())
+}
+
+fun box(): String {
+
+    streamFromFunctionWithInitialValue()
+    iterateOverFunction()
+
+    return "OK"
+}