Initial Commit

test/disposables/Disposable.test.ts

@@ -0,0 +1,41 @@
+import type {Mock} from 'bun:test';
+import {mock, describe, it, beforeEach, expect} from 'bun:test';
+import {Disposable} from '../../src/disposables';
+
+describe(`When using a Disposable`, () => {
+  describe(`Given a Disposable`, () => {
+    let mockFunction: Mock<any>;
+    let disposable: Disposable;
+
+    beforeEach(() => {
+      mockFunction = mock(() => {});
+      disposable = new Disposable(mockFunction);
+    });
+
+    describe(`Given the disposable is disposed`, () => {
+      beforeEach(() => {
+        disposable.dispose();
+      });
+
+      it(`executes the disposble`, () => {
+        expect(mockFunction).toHaveBeenCalled();
+      });
+
+      it(`marks the disposbale disposed`, () => {
+        expect(disposable.isDisposed).toBeTrue();
+      });
+
+      describe(`Given the disposable is repeatedly disposed`, () => {
+        beforeEach(() => {
+          for (let count = 0; count < 10; count++) {
+            disposable.dispose();
+          }
+        });
+
+        it(`disposes the disposable only once`, () => {
+          expect(mockFunction).toHaveBeenCalledTimes(1);
+        });
+      });
+    });
+  });
+});