Add a describe test asserting proper behavior

test/utils/pickers/describePicker/describePicker.tsx

@@ -178,6 +178,22 @@ function innerDescribePicker(ElementToTest: React.ElementType, options: Describe
       expect(screen.queryByTestId('pickers-toolbar')).to.equal(null);
     });
   });
+
+  describe('prop: disableOpenPicker', () => {
+    it('should not render the open picker button, but still render the picker if its open', function test() {
+      if (variant === 'static') {
+        this.skip();
+      }
+
+      render(<ElementToTest disableOpenPicker {...propsToOpen} />);
+
+      expect(screen.queryByRole('button', { name: /Choose/ })).to.equal(null);
+      // check if anything has been rendered inside the layout content wrapper
+      expect(document.querySelector('.MuiPickersLayout-contentWrapper')?.hasChildNodes()).to.equal(
+        true,
+      );
+    });
+  });
 }
 
 /**