//go:build llm_script

package main

import "testing"

func TestParseCoverageArgsRejectsReverseRange(t *testing.T) {
	if _, _, err := parseCoverageArgs("2026-05-14", "2024-06-01"); err == nil {
		t.Fatalf("expected reverse range to fail")
	}
}

func TestSummarizeCoverageCalculatesPercent(t *testing.T) {
	summary := summarizeCoverage([]CoverageDay{
		{Date: "2024-06-05", OfficialRelease: true},
		{Date: "2024-10-25", PromoCampaign: true},
		{Date: "2026-05-14"},
	})

	if summary.TotalDays != 3 {
		t.Fatalf("total days = %d, want 3", summary.TotalDays)
	}
	if summary.CoveredDays != 2 {
		t.Fatalf("covered days = %d, want 2", summary.CoveredDays)
	}
	if summary.CoveragePct < 66.6 || summary.CoveragePct > 66.7 {
		t.Fatalf("coverage pct = %.2f, want about 66.67", summary.CoveragePct)
	}
}