Add mocks to tests

__tests__/Action.test.ts

@@ -0,0 +1,36 @@
+import { Action } from "../src/Action";
+import { Inputs } from "../src/Inputs";
+import { Releases } from "../src/Releases";
+
+
+describe("Action", () => {
+
+    it('verifies my sanity', () => {
+        
+    })
+})
+
+function createAction(): Action {
+    const MockReleases = jest.fn<Releases, any>(() => {
+        return {
+            create: jest.fn(),
+            uploadArtifact: jest.fn()
+        }
+    })
+    const MockInputs = jest.fn<Inputs, any>(() => {
+        return {
+            artifact: "foo",
+            artifactContentType: "foo",
+            artifactContentLength: 22,
+            body: "bar",
+            commit: "foo",
+            name: "name",
+            tag: "foo",
+            token: "foo"
+        }
+    })
+    const inputs = new MockInputs()
+    const releases = new MockReleases()
+
+    return new Action(inputs, releases)
+}