[PRDP-70] fix: Update unit tests

[gioelemella]

List of Changes

• Updated unit test for GenerateReceiptPdfService and GenerateReceiptPdf
• do some refactor
• fixed receipt already created check

Motivation and Context

Update unit tests

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[github-actions]

This PR exceeds the recommended size of 400 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

[github-actions]

Comment this PR with update_code to update openapi.json and format the code. Consider to use pre-commit to format the code.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

81.0% Coverage
0.0% Duplication

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