Test Info
FilterNumber
The Number filter is displayed when you choose Number in the Filter pop-up menu in the Test Info pane.
The default Number Changed, Number More than 95%, Number Out of Range, and other filters are based on the Number filter plug-in.
This filter expects the input text to be a valid number, so is typically used after a Find or Block filter to narrow down the text. It converts the text to a number. The filter editor has extra options to ignoring certain characters and use a customizable decimal separator.
It then compares that number against either a fixed number, or the number from the previous check, plus or minus some delta. It can compare using "is", "is not", "is greater than", "is less than", "is in range" or "is not in range".
Some filters may display controls to specify the condition to evaluate, others may not display anything, if they are pre-configured to use specific values.
The filter results in either a change or failure, as specified in the filter editor. So you can use this to detect if a disk is getting full, a price has changed by a specified threshold, a file count has changed, or many other uses.
This filter outputs the input text. If the checkbox to detect changes in the Options page of the Filter Info pane is on, it results in a Changed status if the numeric condition is true, or Unchanged if false. If that checkbox is off, it results in a Failure status if the condition is true, or Unchanged if false. A custom error message can be entered.