test:add text embedding function testcases in go client

[zhuwenxing]

/kind improvement

[sre-ci-robot]

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[Copilot]

Pull Request Overview

This PR adds comprehensive test coverage for text embedding functionality in the Go client by introducing a new test file with various test cases for TEI (Text Embedding Inference) integration.

Key Changes

• Test Suite Addition: Introduces comprehensive text embedding test cases covering collection creation, data operations, search functionality, and error handling scenarios.
• Helper Function Enhancements: Adds utility functions for TEI endpoint configuration, text embedding function creation, field generation, and embedding consistency validation.
• Configuration Support: Adds command-line flags for TEI endpoint and model dimension configuration to support different test environments.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/go_client/testcases/text_embedding_test.go	Main test file containing 16 comprehensive test cases for text embedding functionality
tests/go_client/testcases/helper/test_setup.go	Adds TEI endpoint and model dimension configuration flags
tests/go_client/testcases/helper/schema_helper.go	Adds helper function for creating text embedding schema options
tests/go_client/testcases/helper/function_helper.go	Adds helper function for creating text embedding functions with parameters
tests/go_client/testcases/helper/field_helper.go	Adds TextEmbedding collection type and helper functions for field generation
tests/go_client/testcases/helper/data_helper.go	Adds utility functions for text generation, similarity calculation, and TEI API interaction

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[Copilot]

The function name changed from GetBm25FunctionsOutputFields to GetAllFunctionsOutputFields, but this change affects existing BM25-only functionality. Consider keeping the original function for backward compatibility or ensuring all callers are updated consistently.

Suggested change

	if slices.Contains(GetAllFunctionsOutputFields(schema), field.Name) {
	if slices.Contains(GetBm25FunctionsOutputFields(schema), field.Name) {

[Copilot]

The function doesn't validate the HTTP response status code before attempting to unmarshal the response body. Non-200 status codes could contain error messages instead of embeddings, leading to confusing error messages.

[Copilot]

The endpoint URL is constructed by string concatenation without proper URL path joining. If the endpoint already ends with a slash, this could result in double slashes. Consider using url.JoinPath or similar for proper URL construction.

Suggested change

	resp, err := http.Post(endpoint+"/embed", "application/json", bytes.NewBuffer(jsonData))
	resp, err := http.Post(url.JoinPath(endpoint, "embed"), "application/json", bytes.NewBuffer(jsonData))