test: Add coverage stubs for various components to address edge cases and improve test coverage

Author: spences10

packages/sveltekit-embed/src/lib/components/anchor-fm.svelte.test.ts

@@ -45,4 +45,33 @@ describe('AnchorFm', () => {
 		const general_observer = getByTestId('general-observer');
 		await expect.element(general_observer).toBeInTheDocument();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty episodeUrl gracefully', async () => {
+		// Test edge case: empty or invalid episode URL
+	});
+
+	it.skip('should apply default height and width when not provided', async () => {
+		// Test default prop values (height: '100px', width: '100%')
+	});
+
+	it.skip('should handle special characters in episodeUrl', async () => {
+		// Test URL encoding and special characters
+	});
+
+	it.skip('should have proper iframe accessibility attributes', async () => {
+		// Test title attribute, aria-labels, etc.
+	});
+
+	it.skip('should handle very long episodeUrl values', async () => {
+		// Test edge case: extremely long URLs
+	});
+
+	it.skip('should apply custom CSS styles correctly', async () => {
+		// Test that custom height/width styles are properly applied
+	});
+
+	it.skip('should handle numeric height and width values', async () => {
+		// Test passing numbers instead of strings for dimensions
+	});
 });

packages/sveltekit-embed/src/lib/components/bluesky.svelte.test.ts

@@ -101,4 +101,45 @@ describe('Bluesky', () => {
 		const element = iframe.element();
 		expect(element.style.height).toBe('100%');
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty post_id gracefully', async () => {
+		// Test edge case: empty or invalid post_id
+	});
+
+	it.skip('should ignore messages from untrusted origins', async () => {
+		// Test security: messages not from embed.bsky.app should be ignored
+	});
+
+	it.skip('should handle message with h property instead of height', async () => {
+		// Test alternative height property in message data
+	});
+
+	it.skip('should fallback to default height for invalid message data', async () => {
+		// Test edge case: malformed message data
+	});
+
+	it.skip('should handle component unmount and cleanup event listeners', async () => {
+		// Test proper cleanup when component is destroyed
+	});
+
+	it.skip('should handle very long post_id values', async () => {
+		// Test edge case: extremely long post IDs
+	});
+
+	it.skip('should apply correct CSS classes and container structure', async () => {
+		// Test CSS class application and DOM structure
+	});
+
+	it.skip('should handle numeric width values', async () => {
+		// Test passing numbers instead of strings for width
+	});
+
+	it.skip('should have proper iframe accessibility attributes', async () => {
+		// Test title attribute and accessibility features
+	});
+
+	it.skip('should handle special characters in post_id', async () => {
+		// Test URL encoding and special characters in post ID
+	});
 });

packages/sveltekit-embed/src/lib/components/buzzsprout.svelte.test.ts

@@ -1,6 +1,6 @@
 import Buzzsprout from '$lib/components/buzzsprout.svelte';
-import { render } from 'vitest-browser-svelte';
 import { describe, expect, it } from 'vitest';
+import { render } from 'vitest-browser-svelte';
 
 let buzzsproutId = '12345';
 
@@ -44,4 +44,41 @@ describe('Buzzsprout', () => {
 		const general_observer = getByTestId('general-observer');
 		expect(general_observer).toBeTruthy();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty buzzsproutId gracefully', async () => {
+		// Test edge case: empty or invalid buzzsprout ID
+	});
+
+	it.skip('should apply default height and width when not provided', async () => {
+		// Test default prop values (height: '200px', width: '100%')
+	});
+
+	it.skip('should handle special characters in buzzsproutId', async () => {
+		// Test URL encoding and special characters
+	});
+
+	it.skip('should have proper iframe accessibility attributes', async () => {
+		// Test title attribute, frameBorder, scrolling attributes
+	});
+
+	it.skip('should handle very long buzzsproutId values', async () => {
+		// Test edge case: extremely long IDs
+	});
+
+	it.skip('should apply custom CSS styles correctly', async () => {
+		// Test that custom height/width styles are properly applied to container
+	});
+
+	it.skip('should handle numeric height and width values', async () => {
+		// Test passing numbers instead of strings for dimensions
+	});
+
+	it.skip('should construct iframe src URL correctly with query parameters', async () => {
+		// Test the specific URL construction with client_source and iframe params
+	});
+
+	it.skip('should render with proper CSS class structure', async () => {
+		// Test buzzsprout-sveltekit-embed class application
+	});
 });

packages/sveltekit-embed/src/lib/components/code-pen.svelte.test.ts

@@ -61,4 +61,53 @@ describe('CodePen', () => {
 		const general_observer = getByTestId('general-observer');
 		await expect.element(general_observer).toBeInTheDocument();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty codePenId gracefully', async () => {
+		// Test edge case: empty or invalid CodePen ID
+	});
+
+	it.skip('should apply default prop values when not provided', async () => {
+		// Test default values for all optional props
+	});
+
+	it.skip('should handle array of tabs configuration', async () => {
+		// Test tabs as array instead of string
+	});
+
+	it.skip('should handle different theme options', async () => {
+		// Test 'light', 'dark', 'default' theme values
+	});
+
+	it.skip('should toggle clickToLoad properly in URL', async () => {
+		// Test URL changes when clickToLoad is false vs true
+	});
+
+	it.skip('should handle editable parameter correctly', async () => {
+		// Test editable true/false in URL construction
+	});
+
+	it.skip('should apply custom iframe styles correctly', async () => {
+		// Test custom iframe_styles prop override
+	});
+
+	it.skip('should handle special characters in codePenId', async () => {
+		// Test URL encoding and special characters
+	});
+
+	it.skip('should construct proper URL for all tab combinations', async () => {
+		// Test 'js', 'css', 'scss', 'less', 'result' tab options
+	});
+
+	it.skip('should handle numeric height and width values', async () => {
+		// Test passing numbers instead of strings for dimensions
+	});
+
+	it.skip('should have proper iframe accessibility attributes', async () => {
+		// Test title, allowfullscreen, and other accessibility features
+	});
+
+	it.skip('should render with proper CSS class', async () => {
+		// Test code-pen-sveltekit-embed class application
+	});
 });

packages/sveltekit-embed/src/lib/components/deezer.svelte.test.ts

@@ -1,6 +1,6 @@
 import Deezer from '$lib/components/deezer.svelte';
-import { render } from 'vitest-browser-svelte';
 import { describe, expect, it } from 'vitest';
+import { render } from 'vitest-browser-svelte';
 
 const theme = 'auto';
 const frameSrc = 'track/1366751722';
@@ -49,4 +49,45 @@ describe('Deezer', () => {
 		const general_observer = getByTestId('general-observer');
 		expect(general_observer).toBeTruthy();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty frameSrc gracefully', async () => {
+		// Test edge case: empty or invalid frame source
+	});
+
+	it.skip('should apply default theme when not provided', async () => {
+		// Test default theme value 'auto'
+	});
+
+	it.skip('should handle different theme options', async () => {
+		// Test various theme values (light, dark, auto, etc.)
+	});
+
+	it.skip('should apply custom iframe styles correctly', async () => {
+		// Test custom iframe_styles prop override
+	});
+
+	it.skip('should handle special characters in frameSrc', async () => {
+		// Test URL encoding and special characters
+	});
+
+	it.skip('should have proper iframe accessibility and security attributes', async () => {
+		// Test allowtransparency, allow attributes, frameborder
+	});
+
+	it.skip('should construct widget URL correctly', async () => {
+		// Test URL construction with theme and frameSrc
+	});
+
+	it.skip('should apply default border-radius styling', async () => {
+		// Test default iframe_styles with border-radius
+	});
+
+	it.skip('should handle numeric height and width values', async () => {
+		// Test passing numbers instead of strings for dimensions
+	});
+
+	it.skip('should handle very long frameSrc values', async () => {
+		// Test edge case: extremely long frame source strings
+	});
 });

packages/sveltekit-embed/src/lib/components/general-observer.svelte.test.ts

@@ -1,11 +1,75 @@
-import { render } from 'vitest-browser-svelte';
 import { describe, expect, it } from 'vitest';
+import { render } from 'vitest-browser-svelte';
 
 import GeneralObserver from './general-observer.svelte';
 
 describe('General Observer', () => {
 	it('mounts', async () => {
-		const { container } = render(GeneralObserver);
+		const { container } = render(GeneralObserver, {
+			disable_observer: true,
+			children: () => 'Test content'
+		});
 		expect(container).toBeTruthy();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should render children when disable_observer is true', async () => {
+		// Test that children are immediately visible when observer is disabled
+	});
+
+	it.skip('should not render children initially when observer is enabled', async () => {
+		// Test that children are not visible until intersection occurs
+	});
+
+	it.skip('should create IntersectionObserver when supported and enabled', async () => {
+		// Test IntersectionObserver creation with proper configuration
+	});
+
+	it.skip('should handle IntersectionObserver not supported gracefully', async () => {
+		// Test fallback behavior when IntersectionObserver is undefined
+	});
+
+	it.skip('should observe root element when observer is created', async () => {
+		// Test that observer.observe is called with root element
+	});
+
+	it.skip('should render children when intersection threshold is met', async () => {
+		// Test children rendering when intersectionRatio >= threshold
+	});
+
+	it.skip('should disconnect observer after successful intersection', async () => {
+		// Test observer cleanup after loading
+	});
+
+	it.skip('should handle custom threshold values', async () => {
+		// Test different threshold values (0.1, 0.5, 1.0, etc.)
+	});
+
+	it.skip('should apply fade transition when content loads', async () => {
+		// Test that transition:fade is applied correctly
+	});
+
+	it.skip('should cleanup observer on component unmount', async () => {
+		// Test proper cleanup in effect return function
+	});
+
+	it.skip('should handle missing children gracefully', async () => {
+		// Test edge case when children snippet is undefined
+	});
+
+	it.skip('should maintain proper data-testid on root element', async () => {
+		// Test general-observer testid is present
+	});
+
+	it.skip('should handle multiple intersection entries correctly', async () => {
+		// Test behavior when multiple entries are observed
+	});
+
+	it.skip('should respect rootMargin configuration', async () => {
+		// Test IntersectionObserver rootMargin setting
+	});
+
+	it.skip('should handle threshold edge cases (0, 1)', async () => {
+		// Test extreme threshold values
+	});
 });

packages/sveltekit-embed/src/lib/components/generic-embed.svelte.test.ts

@@ -56,4 +56,45 @@ describe('GenericEmbed', () => {
 		const general_observer = getByTestId('general-observer');
 		await expect.element(general_observer).toBeInTheDocument();
 	});
+
+	// Coverage gaps - test stubs to implement
+	it.skip('should handle empty src gracefully', async () => {
+		// Test edge case: empty or invalid src URL
+	});
+
+	it.skip('should apply default prop values when not provided', async () => {
+		// Test default height, width, title, and other props
+	});
+
+	it.skip('should handle special characters in src URL', async () => {
+		// Test URL encoding and special characters
+	});
+
+	it.skip('should handle special characters in title', async () => {
+		// Test title with special characters and HTML entities
+	});
+
+	it.skip('should have proper iframe security attributes', async () => {
+		// Test frameborder, allowfullscreen, and other security attributes
+	});
+
+	it.skip('should handle very long src URLs', async () => {
+		// Test edge case: extremely long URLs
+	});
+
+	it.skip('should handle very long titles', async () => {
+		// Test edge case: extremely long title strings
+	});
+
+	it.skip('should handle numeric height and width values', async () => {
+		// Test passing numbers instead of strings for dimensions
+	});
+
+	it.skip('should maintain proper iframe structure', async () => {
+		// Test iframe DOM structure and attributes
+	});
+
+	it.skip('should handle malformed URLs gracefully', async () => {
+		// Test edge case: malformed or invalid URLs
+	});
 });