package assignment

import "testing"

// The per-miler concurrent-stop cap.
//
// This is the knob that now decides how much one rider carries, because
// eligibility no longer stops at the first order. It is read per call so it
// can be changed without a redeploy — and a typo must never uncap the fleet.
func TestMaxActiveBookings(t *testing.T) {
	cases := []struct {
		env  string
		want int64
		why  string
	}{
		{"", defaultMaxActive, "unset falls back to the default"},
		{"10", 10, "a plain number is honoured"},
		{" 8 ", 8, "surrounding whitespace is tolerated"},
		{"1", 1, "one stop at a time is a legitimate policy"},
		{"0", defaultMaxActive, "zero would assign to nobody — treated as unset, not as a cap"},
		{"-4", defaultMaxActive, "negative is meaningless here"},
		{"lots", defaultMaxActive, "a typo must not uncap the fleet"},
		{"3.5", defaultMaxActive, "not an integer"},
	}

	for _, tc := range cases {
		t.Setenv("MILER_MAX_ACTIVE_BOOKINGS", tc.env)
		if got := maxActiveBookings(); got != tc.want {
			t.Errorf("MILER_MAX_ACTIVE_BOOKINGS=%q gave %d, want %d (%s)", tc.env, got, tc.want, tc.why)
		}
	}
}