What did Germany, Italy, and Japan do to "test the will" of the League of Nations

Germany sent troops to Austria and annexed Alsas and Loraine regions from France, moreover, they began to expand their military capabilities against the treaty of Versailles.

Italy, under the leadership of Benito Mussolini, invaded Abyssinia. Today, this is what we call Ethiopia.

Japan, against the laws invaded Manchuria and started committing atrocities and mass war crimes in China.

However, League of Nation were not able to take any effective actions against these acts committed by Germany, Italy and Japan.