From 84da43998f7cc42cc72652333ac6e3d293abb23e Mon Sep 17 00:00:00 2001
From: tsne <tsne.dev@outlook.com>
Date: Mon, 6 Jul 2026 16:52:20 +0200
Subject: initial

---
 internal/cli/duration_test.go | 51 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 internal/cli/duration_test.go

(limited to 'internal/cli/duration_test.go')

diff --git a/internal/cli/duration_test.go b/internal/cli/duration_test.go
new file mode 100644
index 0000000..60d446a
--- /dev/null
+++ b/internal/cli/duration_test.go
@@ -0,0 +1,51 @@
+package cli
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDurationValueParses(t *testing.T) {
+	cases := map[string]duration{
+		"30d":     {days: 30},
+		"7d":      {days: 7},
+		"1y2m10d": {years: 1, months: 2, days: 10},
+		"2m":      {months: 2},
+		"1y":      {years: 1},
+		"0d":      {days: 0},
+	}
+	for in, want := range cases {
+		var v duration
+		if err := v.Set(in); err != nil {
+			t.Fatalf("Set(%q): %v", in, err)
+		}
+		if v != want {
+			t.Fatalf("Set(%q) = %+v, want %+v", in, v, want)
+		}
+	}
+}
+
+func TestDurationValueRejectsBadInput(t *testing.T) {
+	for _, in := range []string{"", "d", "5", "5x", "1h", "1m2m", "-3d", "y", "5 d", "99999999999999999999d"} {
+		var v duration
+		if err := v.Set(in); err == nil {
+			t.Fatalf("Set(%q): expected error", in)
+		}
+	}
+}
+
+func TestDurationValueMonthIsCalendarMonth(t *testing.T) {
+	var v duration
+	if err := v.Set("1m"); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2024, time.March, 31, 0, 0, 0, 0, time.UTC)
+	// A calendar-aware month back from March 31 lands in February, not "31 days".
+	got := v.cutoff(now)
+	if got.Month() != time.February && got.Month() != time.March {
+		t.Fatalf("cutoff month = %v, want calendar-aware", got.Month())
+	}
+	if got.Equal(now.AddDate(0, 0, -30)) {
+		t.Fatalf("cutoff must not use a fixed 30-day month")
+	}
+}
-- 
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