feat(Core): create initial core package

packages/core/src/test.ts

@@ -0,0 +1,58 @@
+interface TestTask {
+  description: string;
+  fn: () => Promise<void> | void;
+  result?: TestResult;
+}
+
+interface TestResult {
+  test: Test;
+  status: Extract<TaskStatus, "pass" | "fail" | "skipped">;
+  error?: Error;
+  duration?: number;
+}
+
+enum TaskStatus {
+  Pending = "pending",
+  Running = "running",
+  Pass = "pass",
+  Fail = "fail",
+  Skipped = "skipped",
+}
+
+class Test implements Test {
+  description: string;
+  fn: () => Promise<void> | void;
+  state: TaskStatus = TaskStatus.Pending;
+
+  // parent?: Suite; // @TODO - this should be a reference to the parent once they are created
+  result?: TestResult;
+
+  constructor(description: string, fn: () => Promise<void> | void) {
+    this.description = description;
+    this.fn = fn;
+  }
+
+  async run() {
+    const start = performance.now();
+
+    try {
+      this.state = TaskStatus.Running;
+      await this.fn();
+
+      this.result = {
+        test: this,
+        status: TaskStatus.Pass,
+        duration: performance.now() - start,
+      };
+    } catch (error) {
+      this.result = {
+        test: this,
+        status: TaskStatus.Fail,
+        error: error instanceof Error ? error : new Error(String(error)),
+        duration: performance.now() - start,
+      };
+    }
+  }
+}
+
+export { Test, type TestResult, type TestTask };