Fix common base path detection to match only complete path segments

[TharmiganK]

Purpose

$Subject

Fixes: ballerina-platform/ballerina-library#8574

[Copilot]

Pull request overview

Adjusts common base path detection in OASModifier so it only matches complete path segments (avoiding false positives like /v2 matching /v2.1), and adds regression tests/resources for version/parameter edge cases.

Changes:

• Add path-segment-aware prefix checking when computing common base paths.
• Improve handling of parameterized path segments when determining the non-parameterized prefix.
• Add new sanitizer test cases and expected outputs covering version mismatches and embedded path parameters.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
openapi-core/src/main/java/io/ballerina/openapi/core/generators/common/OASModifier.java	Updates common base path detection to respect path segment boundaries; adjusts parameterized-path handling.
openapi-cli/src/test/java/io/ballerina/openapi/generators/common/OASModifierTests.java	Adds regression tests for version mismatch and parameterized segment scenarios.
openapi-cli/src/test/resources/generators/sanitizer/basepath_version_mismatch.yaml	New input spec for version-segment mismatch scenario.
openapi-cli/src/test/resources/generators/sanitizer/basepath_with_parameter_1.yaml	New input spec where version-like segment contains an embedded parameter.
openapi-cli/src/test/resources/generators/sanitizer/basepath_with_parameter_2.yaml	New input spec where an earlier common base path exists despite embedded parameter later.
openapi-cli/src/test/resources/generators/sanitizer/basepath_with_parameter_3.yaml	New input spec covering parameterized segment cases with no common base path.
openapi-cli/src/test/resources/generators/sanitizer/expected/modified_basepath_with_parameter_2.yaml	Expected output for the “common base path exists” parameter case.

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[sonarqubecloud]

Quality Gate failed

Failed conditions
1 Security Hotspot

See analysis details on SonarQube Cloud