15.2: Tooltip Placement example
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**Primary Actor**: User

**Scope**: Ngx-bootstrap DEMO / BS version 3&4

**Goal**: Show user available positions of tooltip placement

Main success scenario:
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1. User opens Tooltip demo page
2. User clicks on Placement sub-menu
3. User see 5 buttons "Tooltip on top", "Tooltip on right", "Tooltip auto", "Tooltip on left", "Tooltip on bottom"
4. When user hover on "Tooltip on top", then tooltip-container shown on the top of button with specific text
5. When user moves the mouse cursor away of tooltip-button, then tooltip-container disappeared
6. When user hover on "Tooltip on right", then tooltip-container shown on the right of button with specific text
7. When user moves the mouse cursor away of tooltip-button, then tooltip-container disappeared
8. When user hover on "Tooltip on auto", then tooltip-container shown on the bottom of button with specific text
9. When user moves the mouse cursor away of tooltip-button, then tooltip-container disappeared
10. When user hover on "Tooltip on left", then tooltip-container shown on the left of button with specific text
11. When user moves the mouse cursor away of tooltip-button, then tooltip-container disappeared
12. When user hover on "Tooltip on bottom", then tooltip-container shown on the bottom of button with specific text
13. When user moves the mouse cursor away of tooltip-button, then tooltip-container disappeared

Variations:
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2*. User scroll to Placement sub-menu