diff --git a/tests/cases/fourslash/completionInJsDoc.ts b/tests/cases/fourslash/completionInJsDoc.ts
new file mode 100644
index 00000000000..45631c79ab1
--- /dev/null
+++ b/tests/cases/fourslash/completionInJsDoc.ts
@@ -0,0 +1,39 @@
+///<reference path="fourslash.ts" />
+
+// @allowNonTsExtensions: true
+// @Filename: Foo.js
+/////** @/*1*/ */
+////var v1;
+////
+/////** @p/*2*/ */
+////var v2;
+////
+/////** @param /*3*/ */
+////var v3;
+////
+/////** @param { n/*4*/ } bar */
+////var v4;
+////
+/////** @type { n/*5*/ } */
+////var v5;
+
+goTo.marker('1');
+verify.completionListContains("constructor");
+verify.completionListContains("param");
+verify.completionListContains("type");
+
+goTo.marker('2');
+verify.completionListContains("constructor");
+verify.completionListContains("param");
+verify.completionListContains("type");
+
+goTo.marker('3');
+verify.completionListIsEmpty();
+
+goTo.marker('4');
+verify.completionListContains('number');
+
+goTo.marker('5');
+verify.completionListContains('number');
+
+