Add tests for PlainDate.compare().

test/built-ins/Temporal/PlainDate/compare/argument-object.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.compare
+description: basic object coercion in arguments
+features: [Temporal]
+---*/
+
+const d1 = Temporal.PlainDate.from("1976-11-18");
+const d2 = Temporal.PlainDate.from("2019-06-30");
+
+assert.sameValue(Temporal.PlainDate.compare({ year: 1976, month: 11, day: 18 }, d2), -1, "first argument");
+assert.sameValue(Temporal.PlainDate.compare({ year: 2019, month: 6, day: 30 }, d2), 0, "first argument");
+assert.sameValue(Temporal.PlainDate.compare({ year: 2024, month: 1, day: 12 }, d2), 1, "first argument");
+
+assert.sameValue(Temporal.PlainDate.compare(d1, { year: 2024, month: 1, day: 12 }), -1, "second argument");
+assert.sameValue(Temporal.PlainDate.compare(d1, { year: 1976, month: 11, day: 18 }), 0, "second argument");
+assert.sameValue(Temporal.PlainDate.compare(d1, { year: 1926, month: 7, day: 7 }), 1, "second argument");
+
+assert.throws(TypeError, () => Temporal.PlainDate.compare({ year: 1976 }, d2), "only year in first argument");
+assert.throws(TypeError, () => Temporal.PlainDate.compare(d1, { year: 2019 }), "only year in second argument");

test/built-ins/Temporal/PlainDate/compare/argument-string.js

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+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.compare
+description: basic string coercion in arguments
+features: [Temporal]
+---*/
+
+const d1 = Temporal.PlainDate.from("1976-11-18");
+const d2 = Temporal.PlainDate.from("2019-06-30");
+
+assert.sameValue(Temporal.PlainDate.compare("1976-11-18", d2), -1, "first argument");
+assert.sameValue(Temporal.PlainDate.compare("2019-06-30", d2), 0, "first argument");
+assert.sameValue(Temporal.PlainDate.compare("2024-01-12", d2), 1, "first argument");
+
+assert.sameValue(Temporal.PlainDate.compare(d1, "2019-06-30"), -1, "second argument");
+assert.sameValue(Temporal.PlainDate.compare(d1, "1976-11-18"), 0, "second argument");
+assert.sameValue(Temporal.PlainDate.compare(d1, "1926-07-07"), 1, "second argument");

test/built-ins/Temporal/PlainDate/compare/basic.js

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+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.compare
+description: basic tests
+features: [Temporal]
+---*/
+
+const d1 = Temporal.PlainDate.from("1976-11-18");
+const d2 = Temporal.PlainDate.from("2019-06-30");
+const d3 = Temporal.PlainDate.from("2019-06-30");
+assert.sameValue(Temporal.PlainDate.compare(d1, d1), 0, "same object");
+assert.sameValue(Temporal.PlainDate.compare(d1, d2), -1, "earlier");
+assert.sameValue(Temporal.PlainDate.compare(d2, d1), 1, "later");
+assert.sameValue(Temporal.PlainDate.compare(d2, d3), 0, "same date");

test/built-ins/Temporal/PlainDate/compare/calendar.js

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+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaindate.compare
+description: basic tests
+features: [Temporal]
+---*/
+
+class CalendarTraceToString extends Temporal.Calendar {
+  constructor(id) {
+    super("iso8601");
+    this.id_ = id;
+    this.calls = 0;
+  }
+  toString() {
+    ++this.calls;
+    return this.id_;
+  }
+};
+
+const calendar1 = new CalendarTraceToString("a");
+const date1 = new Temporal.PlainDate(1914, 2, 23, calendar1);
+
+const calendar2 = new CalendarTraceToString("a");
+const date2 = new Temporal.PlainDate(1914, 2, 23, calendar2);
+
+const calendar3 = new CalendarTraceToString("b");
+const date3 = new Temporal.PlainDate(1914, 2, 23, calendar3);
+
+assert.sameValue(Temporal.PlainDate.compare(date1, date1), 0, "same object");
+assert.sameValue(Temporal.PlainDate.compare(date1, date2), 0, "same date");
+assert.sameValue(Temporal.PlainDate.compare(date1, date3), 0, "same date, different calendar");
+
+assert.sameValue(calendar1.calls, 0, "calendar1 toString() calls");
+assert.sameValue(calendar2.calls, 0, "calendar2 toString() calls");
+assert.sameValue(calendar3.calls, 0, "calendar3 toString() calls");