bitvid/test_logs/TEST_LOG_2026-02-15_perf_explore_data.md

Test Log: Explore Data Service Performance Optimization

Initial State

• No tests for exploreDataService.js.
• Creating tests/unit/services/exploreDataService.test.mjs.

Test Execution

Command: node --test tests/unit/services/exploreDataService.test.mjs

Output:

TAP version 13
# Subtest: ExploreDataService
    # Subtest: intervals trigger refresh when visible
    ok 1 - intervals trigger refresh when visible
    # Subtest: intervals skip refresh when hidden
    ok 2 - intervals skip refresh when hidden
    # Subtest: visibility change triggers refresh
    ok 3 - visibility change triggers refresh
    # Subtest: visibility change DOES NOT trigger refresh if hidden
    ok 4 - visibility change DOES NOT trigger refresh if hidden
    1..4
ok 1 - ExploreDataService
# tests 4
# suites 1
# pass 4
# fail 0

Result: All tests passed. The fix effectively gates intervals with document.hidden and triggers refresh on visibility change.