diff --git a/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractGeneric.ts b/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractGeneric.ts
new file mode 100644
index 00000000000..f69ea30d0d6
--- /dev/null
+++ b/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractGeneric.ts
@@ -0,0 +1,25 @@
+abstract class A<T> {
+    t: T;
+    
+    abstract foo(): T;
+    abstract bar(t: T);
+}
+
+abstract class B<T> extends A<T> {}
+
+class C<T> extends A<T> {} // error -- inherits abstract methods
+
+class D extends A<number> {} // error -- inherits abstract methods
+
+class E<T> extends A<T> { // error -- doesn't implement bar
+    foo() { return this.t; }
+}
+
+class F<T> extends A<T> { // error -- doesn't implement foo
+    bar(t : T) {}
+}
+
+class G<T> extends A<T> {
+    foo() { return this.t; }
+    bar(t: T) { }
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractMergedDeclaration.ts b/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractMergedDeclaration.ts
new file mode 100644
index 00000000000..160c0de298b
--- /dev/null
+++ b/tests/cases/conformance/classes/classDeclarations/classAbstractKeyword/classAbstractMergedDeclaration.ts
@@ -0,0 +1,24 @@
+abstract class CM {}
+module CM {}
+
+module MC {}
+abstract class MC {}
+
+abstract class CI {}
+interface CI {}
+
+interface IC {}
+abstract class IC {}
+
+abstract class CC1 {}
+class CC1 {}
+
+class CC2 {}
+abstract class CC2 {}
+
+new CM;
+new MC;
+new CI;
+new IC;
+new CC1;
+new CC2;
\ No newline at end of file