“Test” can be found in the expansion menu of each condition, in each action you will find “Run Action”…
make sure you are looking in the component expansion menu, not the automation’s menu.
The “Run Actions” option in the automation’s expansion menu will run all actions in sequence.
There is no analog for triggers. To test them you can use the “Set State” function in the State tab of Developer Tools. Keep in mind that for your Numeric state trigger to fire the value must change from below 26 to above 26 and stay that way for 2 minutes, so you will have to wait.
I don’t use the automation editor, but the way I read that piece of documentation is that you can test Actions (the “Then Do” piece) and Conditions (the “And if” piece). But it looks like you’re trying to test a Trigger.
Here’s my suggestion. Use a very simple trigger (e.g., a Time Pattern trigger, running it every minute). Then put your current trigger in as a Condition. Then you can test it, and as you tinker with it, the trigger will be firing every minute… so eventually you will fix the condition and you’ll see your automation run on the trigger.
And then you can remove the Condition and change the Trigger.