Add token test.

src/Inputs.ts

@@ -0,0 +1,29 @@
+import * as core from '@actions/core';
+import { Context } from "@actions/github/lib/context";
+
+export class Inputs {
+    private context: Context
+
+    constructor(context: Context) {
+        this.context = context;
+    }
+
+    get token(): string {
+        return core.getInput('token', {required: true});
+    }
+
+    get tag() : string {
+        const tag = core.getInput('tag');
+        if(tag != null) {
+            return tag;
+        }
+
+        const ref = this.context.ref;
+        const tagPath = "refs/tags/";
+        if(ref.startsWith(tagPath)) {
+            return ref.substr(0, tagPath.length);
+        }
+
+        throw Error("No tag found in ref or input!")
+    }
+}