From ee59fa7d9859389a066f05ce077ea16033c62972 Mon Sep 17 00:00:00 2001
From: Drikus Roor <drikusroor@gmail.com>
Date: Sat, 23 Dec 2023 21:59:30 +0100
Subject: [PATCH] test: Add tests for VisualMatchingPairs component

---
 .../src/components/PlayButton/PlayCard.js     |  22 +++-
 .../VisualMatchingPairs.js                    |  11 +-
 .../VisualMatchingPairs.test.js               | 120 ++++++++++++++++++
 3 files changed, 147 insertions(+), 6 deletions(-)
 create mode 100644 frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.test.js

diff --git a/frontend/src/components/PlayButton/PlayCard.js b/frontend/src/components/PlayButton/PlayCard.js
index c2aa6bca0..f2839f033 100644
--- a/frontend/src/components/PlayButton/PlayCard.js
+++ b/frontend/src/components/PlayButton/PlayCard.js
@@ -14,10 +14,24 @@ const PlayCard = ({ onClick, registerUserClicks, playing, section, view }) => {
     }
 
     return (
-        <div className={classNames("aha__play-card", { turned: section.turned }, { noevents: section.noevents }, { disabled: section.inactive }, { memory: section.memory }, { lucky: section.lucky }, { nomatch: section.nomatch })} onClick={event => {
-            registerUserClicks(event.clientX, event.clientY);
-            onClick();
-        }}>
+        <div
+            data-testid="play-card"
+            className={
+                classNames(
+                    "aha__play-card",
+                    { turned: section.turned },
+                    { noevents: section.noevents },
+                    { disabled: section.inactive },
+                    { memory: section.memory },
+                    { lucky: section.lucky },
+                    { nomatch: section.nomatch })
+            }
+            onClick={event => {
+                registerUserClicks(event.clientX, event.clientY);
+                onClick();
+            }}
+            role="button"
+        >
             {section.turned ?
                 view === MATCHINGPAIRS ?
                     <Histogram
diff --git a/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.js b/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.js
index f53ee9688..a6348c689 100644
--- a/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.js
+++ b/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.js
@@ -233,7 +233,9 @@ const VisualMatchingPairs = (props) => {
                     />
                 </div>
                 <div className="col-6 align-self-end">
-                    <div className="matching-pairs__score">Score: <br />{total}</div>
+                    <div className="matching-pairs__score" data-testid="score">
+                        Score: <br />{total}
+                    </div>
                 </div>
             </div>
 
@@ -252,7 +254,12 @@ const VisualMatchingPairs = (props) => {
                 )
                 )}
             </div>
-            <div className="visual-matching-pairs__overlay" onClick={finishTurn} style={{ display: inBetweenTurns ? 'block' : 'none' }}></div>
+            <div
+                className="visual-matching-pairs__overlay"
+                onClick={finishTurn}
+                style={{ display: inBetweenTurns ? 'block' : 'none' }}
+                data-testid="overlay"
+            ></div>
         </div>
     )
 }
diff --git a/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.test.js b/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.test.js
new file mode 100644
index 000000000..cf639b375
--- /dev/null
+++ b/frontend/src/components/VisualMatchingPairs/VisualMatchingPairs.test.js
@@ -0,0 +1,120 @@
+import React from 'react';
+import { render, fireEvent, waitFor } from '@testing-library/react';
+import VisualMatchingPairs from './VisualMatchingPairs'; // Adjust the import path as necessary
+
+// Mock data for sections
+const mockSections = [
+    { id: 1, content: 'Card 1', url: '/cat-01.jpg', inactive: false, turned: false, noevents: false, seen: false, group: 1 },
+    { id: 2, content: 'Card 2', url: '/cat-02.jpg', inactive: false, turned: false, noevents: false, seen: false, group: 2 },
+    { id: 3, content: 'Card 1', url: '/cat-01.jpg', inactive: false, turned: false, noevents: false, seen: false, group: 1 },
+    { id: 4, content: 'Card 2', url: '/cat-02.jpg', inactive: false, turned: false, noevents: false, seen: false, group: 2 },
+];
+
+describe('VisualMatchingPairs', () => {
+    it('renders correctly', () => {
+        const { getByText } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} />);
+        expect(getByText('Pick a card')).toBeInTheDocument();
+    });
+
+    it('flips a card when clicked', async () => {
+        const { getAllByTestId } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} />);
+        const cards = getAllByTestId('play-card'); // Assuming each card is a button, adjust if necessary
+
+        fireEvent.click(cards[0]);
+
+        await waitFor(() => expect(cards[0]).toHaveClass('turned'));
+    });
+
+    it('updates score after a match', async () => {
+        const { getAllByTestId, getByTestId } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} />);
+        const cards = getAllByTestId('play-card');
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[1]);
+
+        await waitFor(() => expect(getByTestId('score')).toBeInTheDocument());
+        expect(getByTestId('score')).toHaveTextContent('100');
+    });
+
+    it('does not update score for a non-matching pair', async () => {
+        const { getAllByTestId, getByTestId } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} />);
+        const cards = getAllByTestId('play-card');
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[1]);
+
+        await waitFor(() => expect(getByTestId('score')).toBeInTheDocument());
+        expect(getByTestId('score')).toHaveTextContent('100'); // Assuming 100 is the initial score
+    });
+
+    it('ends the game when all pairs are matched', async () => {
+        const finishedPlaying = jest.fn();
+        const submitResult = jest.fn();
+        const { getAllByTestId, getByTestId, queryByText } = render(
+            <VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} submitResult={submitResult} finishedPlaying={finishedPlaying} />
+        );
+        const cards = getAllByTestId('play-card');
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[2]);
+        fireEvent.click(getByTestId('overlay'));
+        fireEvent.click(cards[1]);
+        fireEvent.click(cards[3]);
+        fireEvent.click(getByTestId('overlay'));
+
+        await waitFor(() => {
+            expect(queryByText('Pick a card')).not.toBeInTheDocument();
+            expect(submitResult).toHaveBeenCalled();
+        });
+    });
+
+    it('disables card clicks in-between turns', async () => {
+        const { getAllByTestId } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} />);
+        const cards = getAllByTestId('play-card');
+
+        await waitFor(() => expect(cards[0]).not.toHaveClass('noevents'));
+        await waitFor(() => expect(cards[1]).not.toHaveClass('noevents'));
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[1]);
+
+        await waitFor(() => expect(cards[0]).toHaveClass('noevents'));
+        await waitFor(() => expect(cards[1]).toHaveClass('noevents'));
+    });
+
+    it('calculates the correct score for a match', async () => {
+        const finishedPlaying = jest.fn();
+        const submitResult = jest.fn();
+        const { getAllByTestId, getByTestId } = render(<VisualMatchingPairs sections={mockSections} setPlayerIndex={jest.fn()} submitResult={submitResult} finishedPlaying={finishedPlaying} />);
+        const cards = getAllByTestId('play-card');
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[1]);
+        fireEvent.click(getByTestId('overlay'));
+
+        // No match, no score
+        await waitFor(() => expect(getByTestId('score')).toHaveTextContent('100'));
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[3]);
+        fireEvent.click(getByTestId('overlay'));
+
+        // No match, no score
+        await waitFor(() => expect(getByTestId('score')).toHaveTextContent('100'));
+
+        fireEvent.click(cards[0]);
+        fireEvent.click(cards[2]);
+        fireEvent.click(getByTestId('overlay'));
+
+        // Lucky match, +10
+        await waitFor(() => expect(getByTestId('score')).toHaveTextContent('110'));
+
+        fireEvent.click(cards[1]);
+        fireEvent.click(cards[3]);
+        fireEvent.click(getByTestId('overlay'));
+
+        // Known match, +20
+        await waitFor(() => expect(getByTestId('score')).toHaveTextContent('130'));
+    });
+});
+