test: add accessibility testing where applicable

Author: Westbrook

__snapshots__/Action menu.md

@@ -1,89 +1,5 @@
 # `Button`
 
-#### `loads default`
-
-```html
-<button
-  id="button"
-  tabindex="0"
->
-  <div id="label">
-    <slot id="slot">
-    </slot>
-  </div>
-</button>
-
-```
-
-#### `loads default w/ element content`
-
-```html
-<button
-  id="button"
-  tabindex="0"
->
-  <div id="label">
-    <slot id="slot">
-    </slot>
-  </div>
-</button>
-
-```
-
-#### `loads default w/ an icon`
-
-```html
-<button
-  id="button"
-  tabindex="0"
->
-  <slot name="icon">
-  </slot>
-  <div id="label">
-    <slot id="slot">
-    </slot>
-  </div>
-</button>
-
-```
-
-#### `loads default only icon`
-
-```html
-<button
-  id="button"
-  tabindex="0"
->
-  <slot name="icon">
-  </slot>
-  <div
-    hidden=""
-    id="label"
-  >
-    <slot id="slot">
-    </slot>
-  </div>
-</button>
-
-```
-
-#### `loads default w/ an icon on the right`
-
-```html
-<button
-  id="button"
-  tabindex="0"
->
-  <div id="label">
-    <slot id="slot">
-    </slot>
-  </div>
-  <slot name="icon">
-  </slot>
-</button>
-
-```
-
 #### `loads with href`
 
 ```html

__snapshots__/Actionbar.md

@@ -85,93 +85,3 @@
 
 ```
 
-#### `renders invalid`
-
-```html
-<sp-menu role="listbox">
-  <sp-menu-item
-    data-js-focus-visible=""
-    role="option"
-    tabindex="0"
-  >
-    Deselect
-  </sp-menu-item>
-  <sp-menu-item
-    data-js-focus-visible=""
-    role="option"
-    tabindex="-1"
-    value="option-2"
-  >
-    Select Inverse
-  </sp-menu-item>
-  <sp-menu-item
-    data-js-focus-visible=""
-    role="option"
-    tabindex="-1"
-  >
-    Feather...
-  </sp-menu-item>
-  <sp-menu-item
-    data-js-focus-visible=""
-    role="option"
-    tabindex="-1"
-  >
-    Select and Mask...
-  </sp-menu-item>
-  <sp-menu-divider role="separator">
-  </sp-menu-divider>
-  <sp-menu-item
-    data-js-focus-visible=""
-    role="option"
-    tabindex="-1"
-  >
-    Save Selection
-  </sp-menu-item>
-  <sp-menu-item
-    aria-disabled="true"
-    data-js-focus-visible=""
-    disabled=""
-    role="option"
-    tabindex="-1"
-  >
-    Make Work Path
-  </sp-menu-item>
-</sp-menu>
-
-```
-
-```html
-<button
-  aria-haspopup="true"
-  aria-label="Select a Country with a very long label, too long in fact"
-  id="button"
-  tabindex="0"
->
-  <div
-    class="placeholder"
-    id="label"
-  >
-    <slot name="label">
-      Select a Country with a very long label, too long in fact
-    </slot>
-  </div>
-  <sp-icon
-    class="alert-small icon"
-    size="s"
-  >
-  </sp-icon>
-  <sp-icon
-    class="chevron-down-medium dropdown icon"
-    size="s"
-  >
-  </sp-icon>
-</button>
-<sp-popover
-  id="popover"
-  open=""
-  placement="none"
->
-</sp-popover>
-
-```
-