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Fix: Playwright e2e helpers - Response body handling #168

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@helio3197 helio3197 commented Nov 3, 2024

Replace response.body calls of Playwright e2e command helpers with response.json(), so the parsed JSON response can be used instead of getting a Buffer object.

Summary by CodeRabbit

  • New Features

    • Enhanced response handling in asynchronous functions to return parsed JSON data for improved data management.
    • Added a new dependency (bigdecimal gem) to address specific method errors in the Ruby on Rails project.
  • Bug Fixes

    • Resolved issues related to raw response handling, ensuring more reliable data processing.

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coderabbitai bot commented Nov 3, 2024

Walkthrough

The changes in this pull request involve modifications to the on-rails.js file, specifically altering the return statements of several asynchronous functions. The functions appCommands, appVcrInsertCassette, and appVcrEjectCassette have been updated to return parsed JSON responses (response.json()) instead of raw response bodies (response.body). This adjustment affects how the data is processed in subsequent operations, while the overall structure and logic of the functions remain unchanged. Additionally, a new dependency for bigdecimal has been added to the Gemfile to resolve a related error.

Changes

File Change Summary
lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js Modified return statements in appCommands, appVcrInsertCassette, and appVcrEjectCassette to return response.json() instead of response.body.
specs_e2e/rails_4_2/Gemfile Added new gem: gem 'bigdecimal', '1.3.5' to resolve NoMethodError related to BigDecimal.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant Server
    Client->>Server: Request data
    Server-->>Client: response.body
    Note right of Server: Old method
    Client->>Server: Request data
    Server-->>Client: response.json()
    Note right of Server: New method
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🐰 "In the land of code where the rabbits play,
We parse the JSON in a brand new way.
With hugs of data, so neat and bright,
Our functions now sparkle, oh what a sight!
So hop along, friends, let’s cheer and prance,
For changes like these make our code dance!" 🐇✨


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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (2)
lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js (2)

34-34: LGTM! Consider adding type documentation

The change to response.json() completes the consistent response handling across all VCR-related functions. Since these functions are part of a testing framework, it might be helpful to add JSDoc comments describing the expected response structure.

Example documentation:

/**
 * Ejects the current VCR cassette
 * @returns {Promise<Object>} The JSON response from the VCR eject operation
 */

Line range hint 11-34: Consider documenting the response handling change in CHANGELOG

The switch from response.body to response.json() across all helper functions is a good architectural improvement that provides better developer experience. However, this could be a breaking change if any consumers were directly working with the Buffer response.

Suggestions:

  1. Add a CHANGELOG entry documenting this change
  2. Consider bumping the major version if this is a public API
  3. Update the README to highlight the JSON response handling
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between dcea719 and 95ebbf1.

📒 Files selected for processing (1)
  • lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js (2 hunks)
🔇 Additional comments (2)
lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js (2)

26-26: LGTM! Consistent response handling

The change to response.json() maintains consistency with the response handling pattern and properly handles VCR cassette insertion responses.


11-11: LGTM! Improved response handling

The change to response.json() is correct and provides better handling of JSON responses. Since this is a core helper function used by other utilities, we should verify that all consumers handle the parsed JSON correctly.

✅ Verification successful

Change to response.json() is safe and properly handled by consumers

The verification confirms that:

  • In Playwright: The response is used as JSON with body[0] access pattern
  • In Cypress: The response is already handled as JSON through cy.request()
  • In example usage: Data is accessed as JSON array/objects
  • No Buffer/string operations found in any consumers
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify that all consumers of appCommands expect JSON data
# Look for any direct usage of appCommands where the response might be treated as a Buffer/string

# Search for direct appCommands usage
rg -l "appCommands\(" --type js

# Search for potential Buffer operations on the response
rg -l "toString\(\)|Buffer\." --type js

Length of output: 314


Script:

#!/bin/bash
# Let's examine how appCommands is used in the found files
# First, check the implementation in the Playwright support file
rg -A 10 "appCommands" "lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js"

# Then check the Cypress support file for comparison
rg -A 10 "appCommands" "lib/generators/cypress_on_rails/templates/spec/cypress/support/on-rails.js"

# Finally, check the example usage
rg -A 10 "appCommands" "lib/generators/cypress_on_rails/templates/spec/cypress/e2e/rails_examples/other.cy.js"

Length of output: 2349

@justin808
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@MUTOgen @grantspeelman can you take a look?

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@helio3197 Could you check CI?
I think this fix should help here

# Solution for issue: NoMethodError: undefined method `new' for BigDecimal:Class
# https://github.com/ruby/bigdecimal?tab=readme-ov-file#which-version-should-you-select
gem 'bigdecimal', '1.3.5'

@@ -8,7 +8,7 @@ const appCommands = async (data) => {
const response = await context.post('/__e2e__/command', { data })

expect(response.ok()).toBeTruthy()
return response.body
return response.json();
}

const app = (name, options = {}) => appCommands({ name, options }).then((body) => body[0])
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@helio3197 Since appCommand now returns JSON, don't you think then part for app should be updated as well?

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I think it should remain the same since the /__e2e__/command endpoint returns an array of command execution results, and the current behavior is to grab the first command result as the return value as app handles only a command request at time

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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (1)
specs_e2e/rails_4_2/Gemfile (1)

4-4: Consider upgrading the test environment.

This test environment is using Rails 4.2, which has reached end-of-life in 2019. While this fix works, consider creating a plan to upgrade the test environment to a supported Rails version to ensure security and compatibility with modern dependencies.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 95ebbf1 and 8d8e7c7.

📒 Files selected for processing (1)
  • specs_e2e/rails_4_2/Gemfile (1 hunks)
🔇 Additional comments (1)
specs_e2e/rails_4_2/Gemfile (1)

6-8: Well-documented gem addition!

The addition of the bigdecimal gem is properly documented with a clear explanation of the issue being solved and a link to the relevant documentation. This makes it easy for other developers to understand why this dependency was added.

@helio3197 helio3197 requested a review from MUTOgen November 10, 2024 19:56
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LGTM

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3 participants