test: Add unit tests for filter_evaluation.go functions

Tests for alert filter evaluation logic:
- evaluateVMCondition: metric/text/raw conditions for VMs
- evaluateContainerCondition: same for containers
- evaluateFilterStack: AND/OR logic with multiple conditions
- evaluateFilterCondition: type dispatch

74 test cases covering:
- All metric types (cpu, memory, disk, diskread, diskwrite, network)
- All comparison operators (>, <, >=, <=, =, ==)
- Text search fields (name, node, vmid) with case insensitivity
- Raw text search across multiple fields
- Value type conversions (int to float64)
- Edge cases (zero, empty, invalid types)

Coverage improved from 46.8% to 48.9%.
This commit is contained in:
rcourtman 2025-12-01 13:34:23 +00:00
parent 93ea641791
commit 447478785b

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