From 60c49f18389ff625177a57277ef8f292a31097bf Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Sat, 28 Oct 2023 17:12:58 +0200
Subject: refactor(providers,hooks): rewrite PrismThemeProvider & usePrismTheme

* reuse Theme provider logic
* move DOM mutation from provider to hook
* add a script to init theme before page load
---
 .../prism-theme-provider.test.tsx                  | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/utils/providers/prism-theme-provider/prism-theme-provider.test.tsx

(limited to 'src/utils/providers/prism-theme-provider/prism-theme-provider.test.tsx')

diff --git a/src/utils/providers/prism-theme-provider/prism-theme-provider.test.tsx b/src/utils/providers/prism-theme-provider/prism-theme-provider.test.tsx
new file mode 100644
index 0000000..d0c2630
--- /dev/null
+++ b/src/utils/providers/prism-theme-provider/prism-theme-provider.test.tsx
@@ -0,0 +1,50 @@
+import { describe, expect, it } from '@jest/globals';
+import { render, screen as rtlScreen } from '@testing-library/react';
+import { type FC, useContext } from 'react';
+import { PrismThemeContext, PrismThemeProvider } from './prism-theme-provider';
+
+const bodyPrefix = 'Current Prism theme is:';
+
+const ComponentTest: FC = () => {
+  const { theme } = useContext(PrismThemeContext);
+
+  return (
+    <div>
+      {bodyPrefix} {theme}
+    </div>
+  );
+};
+
+describe('PrismThemeProvider', () => {
+  it('uses the default value when the provider is not used', () => {
+    const defaultValue = 'system';
+
+    render(<ComponentTest />);
+
+    expect(rtlScreen.getByText(new RegExp(bodyPrefix))).toHaveTextContent(
+      `${bodyPrefix} ${defaultValue}`
+    );
+  });
+
+  it('provides the given value to its children and set a matching attribute', () => {
+    const attribute = 'ratione';
+    const theme = 'dark';
+
+    const { baseElement } = render(
+      <PrismThemeProvider
+        attribute={attribute}
+        defaultTheme={theme}
+        storageKey="qui"
+      >
+        <ComponentTest />
+      </PrismThemeProvider>
+    );
+
+    expect(rtlScreen.getByText(new RegExp(bodyPrefix))).toHaveTextContent(
+      `${bodyPrefix} ${theme}`
+    );
+    expect(baseElement.parentElement?.getAttribute(`data-${attribute}`)).toBe(
+      theme
+    );
+  });
+});
-- 
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