Do not report required inputs without value but a default as error

actions-languageservice/src/validate-action.ts

@@ -65,7 +65,7 @@ export async function validateAction(
   }
 
   const missingRequiredInputs = Object.entries(actionInputs).filter(
-    ([inputName, input]) => input.required && !stepInputs.has(inputName)
+    ([inputName, input]) => input.required && !stepInputs.has(inputName) && input.default === undefined
   );
 
   if (missingRequiredInputs.length > 0) {

actions-languageservice/src/validate.actions.test.ts

@@ -1,4 +1,4 @@
-import {Diagnostic, DiagnosticSeverity} from "vscode-languageserver-types";
+import {DiagnosticSeverity} from "vscode-languageserver-types";
 import {ActionInput, ActionReference} from "./action";
 import {registerLogger} from "./log";
 import {createDocument} from "./test-utils/document";
@@ -29,6 +29,15 @@ const validationConfig: ValidationConfig = {
           }
         };
         break;
+      case "actions/deploy-pages":
+        inputs = {
+          token: {
+            required: true,
+            description: "token to use",
+            default: "${{ github.token }}"
+          }
+        };
+        break;
       case "actions/cache@v1":
         inputs = {
           path: {
@@ -73,7 +82,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
       with:
-        notanoption: true 
+        notanoption: true
 `;
     const result = await validate(createDocument("wf.yaml", input), validationConfig);
 
@@ -104,7 +113,7 @@ jobs:
     steps:
     - uses: actions/setup-node@v1
       with:
-        version: 10 
+        version: 10
 `;
     const result = await validate(createDocument("wf.yaml", input), validationConfig);
 
@@ -157,6 +166,20 @@ jobs:
     ]);
   });
 
+  it("required input with default value", async () => {
+    const input = `
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/deploy-pages@main
+`;
+    const result = await validate(createDocument("wf.yaml", input), validationConfig);
+
+    expect(result).toEqual([]);
+  });
+
   it("multiple missing required inputs", async () => {
     const input = `
 on: push
@@ -226,7 +249,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
       with:
-        notanoption: true 
+        notanoption: true
 `;
     const config = validationConfig;
     config.valueProviderConfig = {