diff --git a/tests/cases/conformance/expressions/typeGuards/typeGuardTypeOfUndefined.ts b/tests/cases/conformance/expressions/typeGuards/typeGuardTypeOfUndefined.ts
index 50612449145..766c5ed8ca2 100644
--- a/tests/cases/conformance/expressions/typeGuards/typeGuardTypeOfUndefined.ts
+++ b/tests/cases/conformance/expressions/typeGuards/typeGuardTypeOfUndefined.ts
@@ -4,6 +4,12 @@ function test1(a: any) {
         if (typeof a === "boolean") {
             a;
         }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
     }
 }
 
@@ -12,6 +18,12 @@ function test2(a: any) {
         if (typeof a === "boolean") {
             a;
         }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
     }
 }
 
@@ -19,10 +31,154 @@ function test3(a: any) {
     if (typeof a === "undefined" || typeof a === "boolean") {
 		a;
     }
+    else {
+        a;
+    }
 }
 
 function test4(a: any) {
     if (typeof a !== "undefined" && typeof a === "boolean") {
 		a;
     }
+    else {
+        a;
+    }
+}
+
+function test5(a: boolean | void) {
+    if (typeof a !== "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test6(a: boolean | void) {
+    if (typeof a === "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test7(a: boolean | void) {
+    if (typeof a === "undefined" || typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
+}
+
+function test8(a: boolean | void) {
+    if (typeof a !== "undefined" && typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
+}
+
+function test9(a: boolean | number) {
+    if (typeof a !== "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test10(a: boolean | number) {
+    if (typeof a === "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test11(a: boolean | number) {
+    if (typeof a === "undefined" || typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
+}
+
+function test12(a: boolean | number) {
+    if (typeof a !== "undefined" && typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
+}
+
+function test13(a: boolean | number | void) {
+    if (typeof a !== "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test14(a: boolean | number | void) {
+    if (typeof a === "undefined") {
+        if (typeof a === "boolean") {
+            a;
+        }
+        else {
+            a;
+        }
+    }
+    else {
+        a;
+    }
+}
+
+function test15(a: boolean | number | void) {
+    if (typeof a === "undefined" || typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
+}
+
+function test16(a: boolean | number | void) {
+    if (typeof a !== "undefined" && typeof a === "boolean") {
+		a;
+    }
+    else {
+        a;
+    }
 }