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Merged
merged 6 commits into from
May 8, 2025
Merged

Test license #1720

merged 6 commits into from
May 8, 2025

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hardingjam
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@hardingjam hardingjam commented May 1, 2025

Motivation

Solution

Checks

By submitting this for review, I'm confirming I've done the following:

  • made this PR as small as possible
  • unit-tested any new functionality
  • linked any relevant issues or PRs
  • included screenshots (if this involves a front-end change)

Summary by CodeRabbit

  • Bug Fixes

    • Enhanced error messages in the license display to specify HTTP status codes or network failure details when license content cannot be retrieved.
  • Tests

    • Added unit tests to verify license fetching behavior and error handling in the license component.

@hardingjam hardingjam added the test test code label May 1, 2025
@hardingjam hardingjam added this to the Test coverage, tech debt milestone May 1, 2025
@hardingjam hardingjam self-assigned this May 1, 2025
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coderabbitai bot commented May 1, 2025

Walkthrough

The changes add a new test file for the License Svelte component, introducing unit tests that mock fetch calls and the markdown component to verify behavior on successful and failed fetches. The License.svelte component is updated to import the license URL from a constant and improve error handling by distinguishing HTTP errors from network exceptions, setting specific error messages accordingly.

Changes

File(s) Change Summary
packages/ui-components/src/__tests__/License.test.ts Added new unit tests for the License component, mocking fetch and the markdown component, testing successful fetch, HTTP errors, and network errors.
packages/ui-components/src/lib/components/License.svelte Replaced hardcoded fetch URL with imported LICENSE_URL; enhanced error handling to set source with HTTP status or generic failure message.
packages/ui-components/src/lib/consts.ts Added and exported new constant LICENSE_URL pointing to the raw README.md URL in the decentralicense GitHub repository.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant LicenseComponent
    participant GitHub

    User->>LicenseComponent: Mounts component
    activate LicenseComponent
    LicenseComponent->>GitHub: Fetch license markdown from LICENSE_URL
    alt HTTP response OK
        GitHub-->>LicenseComponent: Returns markdown content
        LicenseComponent->>LicenseComponent: Set source to markdown content
    else HTTP response not OK
        GitHub-->>LicenseComponent: Returns HTTP status code
        LicenseComponent->>LicenseComponent: Set source to "Failed to fetch license: HTTP <status>"
    else Network error/exception
        LicenseComponent->>LicenseComponent: Set source to "Failed to fetch license"
    end
    deactivate LicenseComponent
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📥 Commits

Reviewing files that changed from the base of the PR and between 20bf703 and 158ffd4.

📒 Files selected for processing (3)
  • packages/ui-components/src/__tests__/License.test.ts (1 hunks)
  • packages/ui-components/src/lib/components/License.svelte (1 hunks)
  • packages/ui-components/src/lib/consts.ts (1 hunks)
🧰 Additional context used
🧠 Learnings (1)
packages/ui-components/src/lib/components/License.svelte (1)
Learnt from: hardingjam
PR: rainlanguage/rain.orderbook#1720
File: packages/ui-components/src/lib/components/License.svelte:16-18
Timestamp: 2025-05-07T18:05:21.542Z
Learning: In the License.svelte component, error handling is intentionally kept minimal with a single error message "Failed to fetch license" in the catch block, without specific handling for different HTTP status codes.
🧬 Code Graph Analysis (1)
packages/ui-components/src/__tests__/License.test.ts (1)
packages/ui-components/src/lib/consts.ts (1)
  • LICENSE_URL (1-2)
🔇 Additional comments (7)
packages/ui-components/src/lib/consts.ts (1)

1-2: Good extraction of the license URL as a constant

Centralizing the URL in a constants file is a good practice for maintainability. If the URL ever needs to change, it can be updated in a single location.

packages/ui-components/src/lib/components/License.svelte (2)

5-5: Good use of the imported constant

Using the imported LICENSE_URL constant instead of a hardcoded string improves maintainability and ensures consistency between the component and tests.


11-19: Improved error handling with better user feedback

The error handling now distinguishes between HTTP errors and network exceptions, providing more specific error messages to users. This is aligned with the suggestions from previous reviews.

Note: This change appears to add more detailed error handling than previously indicated as intentional in the retrieved learning, but the improvement is beneficial to users.

packages/ui-components/src/__tests__/License.test.ts (4)

1-14: Well-structured test setup with proper mocking

The test setup properly mocks both the fetch function and the Markdown component, isolating the License component for testing. Using vi.stubGlobal and vi.mock follows best practices for Vitest.


16-43: Good test coverage for successful fetch scenario

This test properly verifies that:

  1. The component fetches from the correct URL on mount
  2. The fetched content is correctly passed to the Markdown component

The test uses waitFor appropriately to handle the asynchronous nature of the fetch operation.


45-60: Comprehensive error handling test for network failures

This test properly verifies that network errors during fetch are handled gracefully, showing an appropriate error message to the user.


62-81: Test for HTTP error responses as suggested

This test implements the previously suggested test case for non-OK HTTP responses, verifying that HTTP errors (like 404) are properly handled with a specific error message that includes the status code.

✨ Finishing Touches
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@hardingjam hardingjam marked this pull request as ready for review May 1, 2025 10:38
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Actionable comments posted: 3

🔭 Outside diff range comments (1)
packages/ui-components/src/lib/components/License.svelte (1)

1-29: 🧹 Nitpick (assertive)

Consider adding a loading state

The component currently doesn't show any loading state while the fetch is in progress. Users will see nothing until the fetch completes.

Consider adding a loading state:

<script>
    import { Heading, Text, BlockQuote } from '@rainlanguage/ui-components';
    import Markdown from 'svelte-markdown';
    import { onMount } from 'svelte';

    let source = '';
+   let isLoading = true;

    onMount(async () => {
        try {
            const response = await fetch(
                'https://raw.githubusercontent.com/rainlanguage/decentralicense/refs/heads/master/README.md'
            );
            if (response.ok) {
                source = await response.text();
            }
        } catch {
            source = 'Failed to fetch license';
+       } finally {
+           isLoading = false;
        }
    });
</script>

+{#if isLoading}
+   <Text>Loading license...</Text>
+{:else}
<Markdown
    {source}
    renderers={{
        text: Text,
        heading: Heading,
        blockquote: BlockQuote
    }}
/>
+{/if}
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Reviewing files that changed from the base of the PR and between 9c4c519 and 40a5df4.

📒 Files selected for processing (2)
  • packages/ui-components/src/__tests__/License.test.ts (1 hunks)
  • packages/ui-components/src/lib/components/License.svelte (1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (16)
  • GitHub Check: test
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  • GitHub Check: standard-tests (ubuntu-latest, rainix-sol-legal)
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🔇 Additional comments (1)
packages/ui-components/src/__tests__/License.test.ts (1)

1-60: Well-structured tests with good coverage

The test file is well-structured and covers both the success and error paths of the component. Good job implementing comprehensive tests for this component.

Comment on lines 16 to 17
const expectedUrl =
'https://raw.githubusercontent.com/rainlanguage/decentralicense/refs/heads/master/README.md';
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🧹 Nitpick (assertive)

Consider extracting the URL as a constant

The hardcoded URL in the component is duplicated in the test, creating a tight coupling between the test and implementation details.

If the URL changes in the component, you'll need to update it in two places. Consider extracting it to a constant or configuration value that can be shared:

// Could be moved to a separate constants file that both component and test import
export const LICENSE_URL = 'https://raw.githubusercontent.com/rainlanguage/decentralicense/refs/heads/master/README.md';

@hardingjam hardingjam linked an issue May 6, 2025 that may be closed by this pull request
@hardyjosh hardyjosh enabled auto-merge May 7, 2025 23:23
@hardyjosh hardyjosh merged commit e6eb74b into main May 8, 2025
17 checks passed
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packages/ui-components/src/lib/components/License.svelte
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