Initial Commit

packages/localization/i18n/i18n-formatter-date/src/presets/presets.test.ts

@@ -0,0 +1,78 @@
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { DATE_FORMAT_PRESETS, PRESET_MAP, resolvePreset } from "./presets.js";
+
+describe("PRESET_MAP", () => {
+    it("contains all 8 entries", { timeout: 5000 }, () => {
+        const keys = Object.keys(PRESET_MAP).sort();
+        expect(keys).toEqual(
+            [
+                "date-long",
+                "date-short",
+                "full",
+                "long",
+                "medium",
+                "short",
+                "time-long",
+                "time-short",
+            ].sort()
+        );
+    });
+
+    it("short includes year, month, day, hour, minute", {
+        timeout: 5000,
+    }, () => {
+        expect(PRESET_MAP.short).toMatchObject({
+            year: "numeric",
+            month: "numeric",
+            day: "numeric",
+            hour: "numeric",
+            minute: "numeric",
+        });
+    });
+
+    it("full includes weekday + timeZoneName long", { timeout: 5000 }, () => {
+        expect(PRESET_MAP.full).toMatchObject({
+            weekday: "long",
+            timeZoneName: "long",
+        });
+    });
+
+    it("date-short omits time fields", { timeout: 5000 }, () => {
+        const keys = Object.keys(PRESET_MAP["date-short"]);
+        expect(keys).not.toContain("hour");
+        expect(keys).not.toContain("minute");
+    });
+});
+
+describe("DATE_FORMAT_PRESETS", () => {
+    it("lists all 8 preset names", { timeout: 5000 }, () => {
+        expect(DATE_FORMAT_PRESETS).toHaveLength(8);
+    });
+});
+
+describe("resolvePreset", () => {
+    it("returns undefined for undefined options", { timeout: 5000 }, () => {
+        expect(resolvePreset()).toBeUndefined();
+    });
+
+    it("returns rest options when no preset present", { timeout: 5000 }, () => {
+        const r = resolvePreset({ year: "numeric" });
+        expect(r).toMatchObject({ year: "numeric" });
+    });
+
+    it("merges preset map with rest options", { timeout: 5000 }, () => {
+        const r = resolvePreset({ preset: "short", month: "long" });
+        expect(r).toMatchObject({
+            year: "numeric",
+            month: "long",
+            day: "numeric",
+            hour: "numeric",
+            minute: "numeric",
+        });
+    });
+
+    it("strips locale from rest options", { timeout: 5000 }, () => {
+        const r = resolvePreset({ preset: "short", locale: "en-GB" });
+        expect(r).not.toHaveProperty("locale");
+    });
+});