Let S3Mock accept * and "*" for conditional requests

[afranken]

Description

S3 API accepts * for conditional requests on all APIs. All APIs but PutObject succeed with "*" as well.

Related Issue

Fixes #2371

Tasks

• I have signed the CLA.
• I have written tests and verified that they fail without my change.

[Copilot]

Pull Request Overview

This pull request enhances S3Mock’s conditional request handling by allowing both "" and """" as valid wildcard etags. In addition, tests have been refactored to use centralized file constants and bucket naming has been updated for consistency.

• Updates conditional matching logic in ObjectService to consider both wildcards.
• Replaces local File instantiation in tests with UPLOAD_FILE constants and improves resource usage.
• Refines bucket name generation in S3TestBase to replace "=" with "-" for consistency.

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 1 comment.

File	Description
server/src/main/java/com/adobe/testing/s3mock/service/ObjectService.java	Adjusted conditional etag matching and reordered date-based checks to support "*" wildcard requests.
integration-tests/src/test/kotlin/com/adobe/testing/s3mock/its/*	Updated test files to use centralized UPLOAD_FILE constants and ensure proper resource management via .use.
integration-tests/src/test/kotlin/com/adobe/testing/s3mock/its/S3TestBase.kt	Modified bucket naming logic by replacing "=" with "-" and added a helper method for directory buckets.

Comments suppressed due to low confidence (2)

server/src/main/java/com/adobe/testing/s3mock/service/ObjectService.java:374

• [nitpick] Verify that moving the unmodified-since check to after the match condition does not introduce any unintended side effects in conditional request evaluation.

var setUnmodifiedSince = ifUnmodifiedSince != null && !ifUnmodifiedSince.isEmpty();

integration-tests/src/test/kotlin/com/adobe/testing/s3mock/its/S3TestBase.kt:248

• [nitpick] Confirm that replacing '=' with '-' in bucket names aligns with the expected S3 naming conventions and does not impact any external integrations.

.replace('=', '-')

[Copilot]

[nitpick] Consider adding an inline comment to explain why the condition now checks for both '' and '""', which will aid future maintainers in understanding the rationale behind expanding the wildcard support.

Suggested change

	if (setMatch) {
	if (setMatch) {
	// Check for both quoted ("*") and unquoted (*) wildcards to ensure compatibility
	// with different client implementations or specifications.