Add token test.

__tests__/Inputs.test.ts

@@ -0,0 +1,23 @@
+const mockGetInput = jest.fn();
+
+import { Inputs } from "../src/Inputs";
+import { Context } from "@actions/github/lib/context";
+
+
+jest.mock('@actions/core', () => {
+    return {getInput: mockGetInput};
+});
+
+describe('Inputs', () => {
+    let context: Context
+    let inputs: Inputs
+    beforeEach(() => {
+        context = new Context()
+        inputs = new Inputs(context)
+        mockGetInput.mockReturnValue("")
+    })
+    it('returns token', () => {
+        mockGetInput.mockReturnValue("42")
+        expect(inputs.token).toBe("42")
+    })
+})