Initial code import

actions-languageservice/src/test-utils/cursor-position.test.ts

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+import { getPositionFromCursor } from "./cursor-position";
+
+describe("getPositionFromCursor", () => {
+  it("returns the position of the cursor and the document without that cursor", () => {
+    const input = "on: push\njobs:|";
+    const [newDoc, position] = getPositionFromCursor(input);
+
+    expect(position).toEqual({ line: 1, character: 5 });
+    expect(newDoc.getText()).toEqual("on: push\njobs:");
+  });
+
+  it("throws an error if no cursor is found", () => {
+    const input = "on: push\njobs:";
+    expect(() => getPositionFromCursor(input)).toThrowError(
+      "No cursor found in document"
+    );
+  });
+
+  it("handles a cursor at the beginning of the document", () => {
+    const input = "|on: push\njobs:";
+    const [newDoc, position] = getPositionFromCursor(input);
+
+    expect(position).toEqual({ line: 0, character: 0 });
+    expect(newDoc.getText()).toEqual("on: push\njobs:");
+  });
+});

actions-languageservice/src/test-utils/cursor-position.ts

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+import { TextDocument, Position } from "vscode-languageserver-textdocument";
+
+// Calculates the position of the cursor and the document without that cursor
+// Cursor is represented by a `|` character
+export function getPositionFromCursor(input: string): [TextDocument, Position] {
+  const doc = TextDocument.create("test://test/test.yaml", "yaml", 0, input);
+
+  const cursorIndex = doc.getText().indexOf("|");
+  if (cursorIndex === -1) {
+    throw new Error("No cursor found in document");
+  }
+
+  const position = doc.positionAt(cursorIndex);
+  const newDoc = TextDocument.create(
+    doc.uri,
+    doc.languageId,
+    doc.version,
+    doc.getText().replace("|", "")
+  );
+
+  return [newDoc, position];
+}