Add test to add documentation

Co-authored-by: Janne Savolainen <janne.savolainen@live.fi>

Signed-off-by: Iku-turso <mikko.aspiala@gmail.com>

src/behaviours/proxy/resolve-proxy/main/resolve-proxy-from-electron.test.ts

@@ -91,7 +91,7 @@ describe("technical: resolve-proxy-from-electron", () => {
   });
 
   describe("given there are only destroyed Lens windows, when called with URL", () => {
-    let error: unknown;
+    let error: any;
 
     beforeEach(async () => {
       di.override(
@@ -127,6 +127,10 @@ describe("technical: resolve-proxy-from-electron", () => {
       }
     });
 
+    it("throws error", () => {
+      expect(error.message).toBe('Tried to resolve proxy for "some-url", but no browser window was available');
+    });
+
     it("logs error", () => {
       expect(logErrorMock).toHaveBeenCalledWith("Error resolving proxy", error);
     });