diff --git a/src/spec/modal-backdrop.component.spec.ts b/src/spec/modal-backdrop.component.spec.ts
index b2a59fc09b..e0662d0a59 100644
--- a/src/spec/modal-backdrop.component.spec.ts
+++ b/src/spec/modal-backdrop.component.spec.ts
@@ -1,8 +1,5 @@
-import { DebugElement } from '@angular/core';
-import { ComponentFixture, TestBed } from '@angular/core/testing';
-
 import { ModalBackdropComponent } from '../modal';
-import { window } from '../utils/facade/browser';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 describe('ModalBackdropComponent tests', () => {
   let fixture: ComponentFixture<ModalBackdropComponent>;
@@ -14,51 +11,22 @@ describe('ModalBackdropComponent tests', () => {
     });
     fixture = TestBed.createComponent(ModalBackdropComponent);
     component = fixture.componentInstance;
-    component.isAnimated = true;
     fixture.detectChanges();
   });
 
   it('should get and set isAnimated correctly', () => {
-    component.isAnimated = false;
-    expect(component.isAnimated).toBeFalsy();
     component.isAnimated = true;
     expect(component.isAnimated).toBeTruthy();
   });
 
-  it('should get and set isShown correctly', () => {
-    component.isShown = false;
-    expect(component.isShown).toBeFalsy();
-    component.isShown = true;
-    expect(component.isShown).toBeTruthy();
-  });
-
-  it('isShown() tests, when bs4', () => {
-    const tempVal = window.__theme;
-    window.__theme = 'bs4';
-    component.isShown = true;
-    fixture.detectChanges();
-    let modalClass = component.element.nativeElement.classList.contains('show');
-    expect(modalClass).toBeTruthy();
-
-    component.isShown = false;
-    fixture.detectChanges();
-    modalClass = component.element.nativeElement.classList.contains('show');
-    expect(modalClass).toBeFalsy();
-    window.__theme = tempVal;
-  });
-
-  it('isShown() tests, when bs3', () => {
-    const tempVal = window.__theme;
-    window.__theme = 'bs3';
+  it('isShown() tests', () => {
     component.isShown = true;
     fixture.detectChanges();
     let modalClass = component.element.nativeElement.classList.contains('in');
     expect(modalClass).toBeTruthy();
-
     component.isShown = false;
     fixture.detectChanges();
     modalClass = component.element.nativeElement.classList.contains('in');
     expect(modalClass).toBeFalsy();
-    window.__theme = tempVal;
   });
 });