diff --git a/tests/cases/fourslash/annotateWithTypeFromJSDoc19.ts b/tests/cases/fourslash/annotateWithTypeFromJSDoc19.ts
new file mode 100644
index 00000000000..9e7ef6d25fd
--- /dev/null
+++ b/tests/cases/fourslash/annotateWithTypeFromJSDoc19.ts
@@ -0,0 +1,19 @@
+/// <reference path='fourslash.ts' />
+// @strict: true
+/////**
+//// * @template T
+//// * @param {number} a
+//// * @param {T} b
+//// */
+////function /*1*/f(a, b) {
+////}
+
+verify.applicableRefactorAvailableAtMarker('1');
+verify.fileAfterApplyingRefactorAtMarker('1',
+`/**
+ * @template T
+ * @param {number} a
+ * @param {T} b
+ */
+function f<T>(a: number, b: T) {
+}`, 'Annotate with types from JSDoc', 'annotate');
diff --git a/tests/cases/fourslash/annotateWithTypeFromJSDoc20.ts b/tests/cases/fourslash/annotateWithTypeFromJSDoc20.ts
new file mode 100644
index 00000000000..a45eb788c73
--- /dev/null
+++ b/tests/cases/fourslash/annotateWithTypeFromJSDoc20.ts
@@ -0,0 +1,17 @@
+/// <reference path='fourslash.ts' />
+// @strict: true
+/////**
+//// * @param {number} a
+//// * @param {T} b
+//// */
+////function /*1*/f<T>(a, b) {
+////}
+
+verify.applicableRefactorAvailableAtMarker('1');
+verify.fileAfterApplyingRefactorAtMarker('1',
+`/**
+ * @param {number} a
+ * @param {T} b
+ */
+function f<T>(a: number, b: T) {
+}`, 'Annotate with types from JSDoc', 'annotate');