diff --git a/apps/web/test/lib/availabilityAsString.test.ts b/apps/web/test/lib/availabilityAsString.test.ts
new file mode 100644
index 0000000000..144a621d71
--- /dev/null
+++ b/apps/web/test/lib/availabilityAsString.test.ts
@@ -0,0 +1,111 @@
+import { expect, it } from "vitest";
+
+import { availabilityAsString } from "@calcom/lib/availability";
+
+it("correctly handles 1 day", async () => {
+  const availability = {
+    id: 1,
+    userId: 2,
+    eventTypeId: 3,
+    days: [1],
+    startTime: new Date(Date.UTC(1970, 1, 1, 9, 0, 0, 0)),
+    endTime: new Date(Date.UTC(1970, 1, 1, 17, 0, 0, 0)),
+    date: null,
+    scheduleId: 1
+  };
+
+  const result = availabilityAsString(availability, {
+    locale: 'en',
+    hour12: true
+  });
+
+  expect(replaceUnicodeSpace(result)).toBe("Mon, 9:00 AM - 5:00 PM");
+});
+
+
+it("correctly handles all days", async () => {
+  const availability = {
+    id: 1,
+    userId: 2,
+    eventTypeId: 3,
+    days: [1, 2, 3, 4, 5, 6, 7],
+    startTime: new Date(Date.UTC(1970, 1, 1, 9, 0, 0, 0)),
+    endTime: new Date(Date.UTC(1970, 1, 1, 17, 0, 0, 0)),
+    date: null,
+    scheduleId: 1
+  };
+
+  const result = availabilityAsString(availability, {
+    locale: 'en',
+    hour12: true
+  });
+
+  expect(replaceUnicodeSpace(result)).toBe("Mon - Sun, 9:00 AM - 5:00 PM");
+});
+
+it("correctly handles staggered days", async () => {
+  const availability = {
+    id: 1,
+    userId: 2,
+    eventTypeId: 3,
+    days: [1, 3, 5, 7],
+    startTime: new Date(Date.UTC(1970, 1, 1, 9, 0, 0, 0)),
+    endTime: new Date(Date.UTC(1970, 1, 1, 17, 0, 0, 0)),
+    date: null,
+    scheduleId: 1
+  };
+
+  const result = availabilityAsString(availability, {
+    locale: 'en',
+    hour12: true
+  });
+
+  expect(replaceUnicodeSpace(result)).toBe("Mon, Wed, Fri, Sun, 9:00 AM - 5:00 PM");
+});
+
+it("correctly produces days and times - 12 hours", async () => {
+  const availability = {
+    id: 1,
+    userId: 2,
+    eventTypeId: 3,
+    days: [1, 2, 3],
+    startTime: new Date(Date.UTC(1970, 1, 1, 9, 0, 0, 0)),
+    endTime: new Date(Date.UTC(1970, 1, 1, 17, 0, 0, 0)),
+    date: null,
+    scheduleId: 1
+  };
+
+  const result = availabilityAsString(availability, {
+    locale: 'en',
+    hour12: true
+  });
+
+  expect(replaceUnicodeSpace(result)).toBe("Mon - Wed, 9:00 AM - 5:00 PM");
+});
+
+it("correctly produces days and times - 24 hours", async () => {
+  const availability = {
+    id: 1,
+    userId: 2,
+    eventTypeId: 3,
+    days: [1, 2, 3],
+    startTime: new Date(Date.UTC(1970, 1, 1, 9, 0, 0, 0)),
+    endTime: new Date(Date.UTC(1970, 1, 1, 17, 0, 0, 0)),
+    date: null,
+    scheduleId: 1
+  };
+
+  const result = availabilityAsString(availability, {
+    locale: 'en',
+    hour12: false
+  });
+
+  expect(replaceUnicodeSpace(result)).toBe("Mon - Wed, 09:00 - 17:00");
+});
+
+// INFO: This is because on GitHub, the international date formatting
+// produces Unicode characters. Instead of using line for line code from the
+// availability.ts file, opted for this instead.
+const replaceUnicodeSpace = (string: string) => {
+  return string.replace(/\u202f/g, ' ');
+}