import mir.test;
Timestamp.init.toString.should == "0000T";
Timestamp(2010, 7, 4).toString.should == "2010-07-04";
Timestamp(1998, 12, 25).toString.should == "1998-12-25";
Timestamp(0, 1, 5).toString.should == "0000-01-05";
Timestamp(-4, 1, 5).toString.should == "-0004-01-05";

// yyyy-mm-ddThh:mm:ss[.mmm]±hh:mm
Timestamp(2021).toString.should == "2021T";
Timestamp(2021, 01).toString.should == "2021-01T";
Timestamp(2021, 01, 29).toString.should == "2021-01-29";
Timestamp(2021, 01, 29, 19, 42).withOffset(0).toString.should == "2021-01-29T19:42Z";
Timestamp(2021, 01, 29, 12, 42, 44).withOffset(7 * 60).toString.should == "2021-01-29T19:42:44+07";
Timestamp(2021, 01, 29, 12, 42, 44).withOffset(7 * 60 + 30).toString.should == "2021-01-29T20:12:44+07:30";

Timestamp.onlyTime(7, 40).toString.should == "07:40-00:00";
Timestamp.onlyTime(7, 40, 30).toString.should == "07:40:30-00:00";
Timestamp.onlyTime(7, 40, 30, -3, 56).withOffset(0).toString.should == "07:40:30.056Z";

// Test A.D.
assert(Timestamp(9, 12, 4).toISOExtString == "0009-12-04");
assert(Timestamp(99, 12, 4).toISOExtString == "0099-12-04");
assert(Timestamp(999, 12, 4).toISOExtString == "0999-12-04");
assert(Timestamp(9999, 7, 4).toISOExtString == "9999-07-04");
assert(Timestamp(10000, 10, 20).toISOExtString == "+10000-10-20");

// Test B.C.
assert(Timestamp(0, 12, 4).toISOExtString == "0000-12-04");
assert(Timestamp(-9, 12, 4).toISOExtString == "-0009-12-04");
assert(Timestamp(-99, 12, 4).toISOExtString == "-0099-12-04");
assert(Timestamp(-999, 12, 4).toISOExtString == "-0999-12-04");
assert(Timestamp(-9999, 7, 4).toISOExtString == "-9999-07-04");
assert(Timestamp(-10000, 10, 20).toISOExtString == "-10000-10-20");

assert(Timestamp.onlyTime(7, 40).toISOExtString == "07:40-00:00");
assert(Timestamp.onlyTime(7, 40, 30).toISOExtString == "07:40:30-00:00");
assert(Timestamp.onlyTime(7, 40, 30, -3, 56).toISOExtString == "07:40:30.056-00:00");

const cdate = Timestamp(1999, 7, 6);
immutable idate = Timestamp(1999, 7, 6);
assert(cdate.toISOExtString == "1999-07-06");
assert(idate.toISOExtString == "1999-07-06");