stateinputprovider with pending test cases fix

src/saveImpl.ts

@@ -28,9 +28,7 @@ async function saveImpl(stateProvider: IStateProvider): Promise<number | void> {
 
         // If restore has stored a primary key in state, reuse that
         // Else re-evaluate from inputs
-        const primaryKey =
-            stateProvider.getState(State.CachePrimaryKey) ||
-            core.getInput(Inputs.Key);
+        const primaryKey = stateProvider.getState(State.CachePrimaryKey);
 
         if (!primaryKey) {
             utils.logWarning(`Key is not specified.`);

src/stateProvider.ts

@@ -1,6 +1,6 @@
 import * as core from "@actions/core";
 
-import { Outputs, State } from "./constants";
+import { Inputs, Outputs, State } from "./constants";
 
 export interface IStateProvider {
     setState(key: string, value: string): void;
@@ -33,6 +33,10 @@ export class StateProvider extends StateProviderBase {
 }
 
 export class NullStateProvider extends StateProviderBase {
+    stateToInputMap = new Map<string, string>([
+        [State.CachePrimaryKey, Inputs.Key]
+    ]);
+
     stateToOutputMap = new Map<string, string>([
         [State.CacheMatchedKey, Outputs.CacheMatchedKey],
         [State.CachePrimaryKey, Outputs.CachePrimaryKey]
@@ -41,6 +45,8 @@ export class NullStateProvider extends StateProviderBase {
     setState = (key: string, value: string) => {
         core.setOutput(this.stateToOutputMap.get(key) as string, value);
     };
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    getState = (key: string) => "";
+
+    getState = (key: string) => {
+        return core.getInput(this.stateToInputMap.get(key) as string);
+    };
 }

src/utils/testUtils.ts

@@ -9,6 +9,10 @@ export function setInput(name: string, value: string): void {
     process.env[getInputName(name)] = value;
 }
 
+export function getInput(name: string): string {
+    return process.env[getInputName(name)] as string;
+}
+
 interface CacheInput {
     path: string;
     key: string;