Optimize and test transform

actions-languageservice/src/utils/transform.test.ts

@@ -0,0 +1,47 @@
+import {getPositionFromCursor} from "../test-utils/cursor-position";
+import {transform} from "./transform";
+
+describe("transform", () => {
+  it("adds : at end of line", () => {
+    const [doc, pos] = getPositionFromCursor("on: push\njobs:\n  build:\n    runs-on|");
+    const [newDoc, newPos] = transform(doc, pos);
+
+    expect(newDoc.getText()).toEqual(`on: push
+jobs:
+  build:
+    runs-on:`);
+    expect(newPos.character).toEqual(11);
+  });
+
+  it("adds placeholder node in empty sequence", () => {
+    const [doc, pos] = getPositionFromCursor(`on: push
+jobs:
+  build:
+    runs-on:
+      - |`);
+    const [newDoc, newPos] = transform(doc, pos);
+
+    expect(newDoc.getText()).toEqual(`on: push
+jobs:
+  build:
+    runs-on:
+      - dummy`);
+    expect(newPos.character).toEqual(9);
+  });
+
+  it("adds placeholder node in empty line", () => {
+    const [doc, pos] = getPositionFromCursor(`on: push
+jobs:
+  build:
+    runs-on:
+      |`);
+    const [newDoc, newPos] = transform(doc, pos);
+
+    expect(newDoc.getText()).toEqual(`on: push
+jobs:
+  build:
+    runs-on:
+      dummy:`);
+    expect(newPos.character).toEqual(7);
+  });
+});