conductor(checkpoint): Checkpoint end of Phase 2: Core Logic

icalendar_test.ts

@@ -0,0 +1,45 @@
+import { assertEquals } from "jsr:@std/assert";
+import { resolveEventStart } from "./icalendar.ts";
+
+Deno.test("resolveEventStart - local date with timezone", async () => {
+  const icsEvent = {
+    summary: "Test Event",
+    start: {
+      date: "2025-01-15T12:00:00.000",
+      local: {
+        date: "2025-01-15T07:00:00.000",
+        timezone: "Eastern Standard Time"
+      }
+    }
+  };
+  
+  const result = await resolveEventStart(icsEvent);
+  assertEquals(result?.toISOString(), "2025-01-15T12:00:00.000Z");
+});
+
+Deno.test("resolveEventStart - DST check (Summer)", async () => {
+  const icsEvent = {
+    summary: "Test Event DST",
+    start: {
+      date: "2025-07-15T11:00:00.000",
+      local: {
+        date: "2025-07-15T07:00:00.000",
+        timezone: "Eastern Standard Time"
+      }
+    }
+  };
+  
+  const result = await resolveEventStart(icsEvent);
+  assertEquals(result?.toISOString(), "2025-07-15T11:00:00.000Z");
+});
+
+Deno.test("resolveEventStart - UTC event", async () => {
+  const icsEvent = {
+    summary: "UTC Event",
+    start: {
+      date: "2025-01-15T12:00:00.000Z"
+    }
+  };
+  const result = await resolveEventStart(icsEvent);
+  assertEquals(result?.toISOString(), "2025-01-15T12:00:00.000Z");
+});