aboutsummaryrefslogtreecommitdiffstats
path: root/src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx
diff options
context:
space:
mode:
Diffstat (limited to 'src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx')
-rw-r--r--src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx134
1 files changed, 134 insertions, 0 deletions
diff --git a/src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx b/src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx
new file mode 100644
index 0000000..8a178c9
--- /dev/null
+++ b/src/utils/hooks/use-prism-theme/use-prism-theme.test.tsx
@@ -0,0 +1,134 @@
+import { describe, expect, it } from '@jest/globals';
+import {
+ act,
+ render,
+ renderHook,
+ screen as rtlScreen,
+} from '@testing-library/react';
+import type { FC, ReactNode } from 'react';
+import {
+ PrismThemeProvider,
+ type PrismThemeProviderProps,
+} from '../../providers/prism-theme-provider';
+import { usePrismTheme } from './use-prism-theme';
+
+const codeSample1 = `const foo = 42;`;
+const codeSample2 = `const bar = "baz";`;
+const codeSample3 = `const baz = () => false;`;
+
+const ComponentTest: FC = () => {
+ usePrismTheme();
+
+ return (
+ <div>
+ <pre className="language-js">{codeSample1}</pre>
+ <pre className="language-js">{codeSample2}</pre>
+ <pre>{codeSample3}</pre>
+ </div>
+ );
+};
+
+const createWrapper = (
+ Wrapper: FC<PrismThemeProviderProps>,
+ config: PrismThemeProviderProps
+) =>
+ function CreatedWrapper({ children }: { children: ReactNode }) {
+ return <Wrapper {...config}>{children}</Wrapper>;
+ };
+
+describe('usePrismTheme', () => {
+ it('should return the default value without provider and prevent update', () => {
+ const defaultTheme = 'system';
+ const { result } = renderHook(() => usePrismTheme());
+
+ expect(result.current.theme).toBe(defaultTheme);
+
+ act(() => result.current.setTheme('dark'));
+
+ expect(result.current.theme).toBe(defaultTheme);
+ });
+
+ it('should add an attribute on pre elements when matching a Prism block', () => {
+ const defaultTheme = 'light';
+ const attribute = 'data-debitis';
+
+ render(
+ <PrismThemeProvider
+ attribute={attribute}
+ defaultTheme={defaultTheme}
+ storageKey="soluta"
+ >
+ <ComponentTest />
+ </PrismThemeProvider>
+ );
+
+ expect(rtlScreen.getByText(codeSample1)).toHaveAttribute(
+ attribute,
+ defaultTheme
+ );
+ expect(rtlScreen.getByText(codeSample2)).toHaveAttribute(
+ attribute,
+ defaultTheme
+ );
+ expect(rtlScreen.getByText(codeSample3)).not.toHaveAttribute(
+ attribute,
+ defaultTheme
+ );
+ });
+
+ it('can update the theme value using a setter', () => {
+ const defaultTheme = 'dark';
+
+ const { result } = renderHook(() => usePrismTheme(), {
+ wrapper: createWrapper(PrismThemeProvider, {
+ attribute: 'consequuntur',
+ defaultTheme,
+ storageKey: 'deleniti',
+ }),
+ });
+
+ expect(result.current.theme).toBe(defaultTheme);
+
+ const newTheme = 'light';
+
+ act(() => result.current.setTheme(newTheme));
+
+ expect(result.current.theme).toBe(newTheme);
+ });
+
+ it('can toggle the theme from light to dark', () => {
+ const defaultTheme = 'light';
+
+ const { result } = renderHook(() => usePrismTheme(), {
+ wrapper: createWrapper(PrismThemeProvider, {
+ attribute: 'et',
+ defaultTheme,
+ storageKey: 'velit',
+ }),
+ });
+
+ expect(result.current.theme).toBe(defaultTheme);
+
+ act(() => result.current.toggleTheme());
+
+ expect(result.current.theme).toBe('dark');
+ });
+
+ it('can toggle the theme from dark to light', () => {
+ const defaultTheme = 'dark';
+
+ const { result } = renderHook(() => usePrismTheme(), {
+ wrapper: createWrapper(PrismThemeProvider, {
+ attribute: 'et',
+ defaultTheme,
+ storageKey: 'velit',
+ }),
+ });
+
+ expect(result.current.theme).toBe(defaultTheme);
+
+ act(() => result.current.toggleTheme());
+
+ expect(result.current.theme).toBe('light');
+ });
+});