Test Scenarios for the Runtimes Recommendations

[khansaad]

Generate Recommendations Test scenarios:

• Hotspot GC policy (OpenJDK/Hotspot): JVM workload with OpenJDK or Hotspot runtime and layer hotspot present.
  Expected: JDK_JAVA_OPTIONS or JAVA_OPTIONS contains appropriate GC flags (e.g., -XX:+UseG1GC for G1)
• Semeru GC policy (Semeru/OpenJ9): JVM workload with Semeru or OpenJ9 runtime and layer semeru present.
  Expected: JAVA_OPTIONS contains -Xgcpolicy:gencon, -Xgcpolicy:balanced, or -Xgcpolicy:optthruput
• Missing JVM metadata: Workload without jvm_info metrics or layer presence.
  Expected: No runtime recommendations; env absent or empty
• Missing JVM version: jvm_info present but version label missing.
  Expected: No GC recommendation (null version handling)
• Layer vs runtime mismatch: Layer name does not match effective runtime (e.g., hotspot layer for OpenJ9 workload).
  Expected: No recommendation for mismatched layer
• Non-runtime datasource: Datasource that does not support runtime recommendations.
  Expected: API succeeds; server logs RUNTIMES_RECOMMENDATIONS_NOT_AVAILABLE

[github-actions]

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