test: Fix unawaited coroutine warnings in Ollama mock tests

[Cristhianzl]

Eliminate RuntimeWarning "coroutine was never awaited" in Ollama component tests caused by incorrect mock setup.

Changes

• Replace AsyncMock().raise_for_status.return_value = None with MagicMock(return_value=None) assignment across ChatOllama and OllamaEmbeddings test files
• Fix 15 occurrences in test_chatollama_component.py and 21 in test_ollama_embeddings_component.py

Summary by CodeRabbit

• Tests
  • Updated internal test infrastructure for mock configuration in embeddings and language model components. No changes to user-facing functionality or behavior.

[coderabbitai]

Caution

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The pull request is closed.

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📥 Commits

Reviewing files that changed from the base of the PR and between 6e95b7c and 0904405.

📒 Files selected for processing (2)

• src/backend/tests/unit/components/embeddings/test_ollama_embeddings_component.py
• src/backend/tests/unit/components/languagemodels/test_chatollama_component.py

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Walkthrough

Two test files update mock configuration for HTTP response handling by replacing raise_for_status.return_value = None with MagicMock(return_value=None). These changes are semantically equivalent and do not alter control flow or error handling behavior.

Changes

Cohort / File(s)	Summary
Test Mock Configuration Updates src/backend/tests/unit/components/embeddings/test_ollama_embeddings_component.py, src/backend/tests/unit/components/languagemodels/test_chatollama_component.py	Updated mock setup for raise_for_status to use explicit MagicMock(return_value=None) instead of direct attribute assignment. Functionally equivalent changes affecting only test mocking configuration.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch cz/fix-ollama-tests

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