shadows/supportv4/src/main/java/org/robolectric/shadows/support/v4/ShadowDrawerLayout.java
@Implementation
  protected void openDrawer(View drawerView, boolean animate) {
    directlyOn(realDrawerLayout, DrawerLayout.class).openDrawer(drawerView, false);
  }
@Implementation
  protected void openDrawer(View drawerView, boolean animate) {
    directlyOn(realDrawerLayout, DrawerLayout.class).openDrawer(drawerView, false);
  }
Drawer animations are disabled in unit tests.