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Test and build intuition for the resolving of rules on a flag by providing an evaluation context and resolving it against a client. Go to Flags and select the flag you want to test. In the Rules section, click the test button (beaker icon) to open the Resolver test page. Select a client and credentials, then click Add evaluation context to provide the context you want to test. Toggle between key-value editing and JSON input using the buttons above the context fields. The resolver test returns a detailed response explaining which rules match and which don’t, together with the reasons why.

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Common Reasons Rules Fail

The most common reasons for a rule not returning a variant are:
  • The rule is not enabled
  • The evaluation context lacks a field used in the inclusion criteria of the rule
  • The evaluation context has a value on a field that doesn’t match the criterion on that field in the rule
  • The rule is not considered because it has a lower priority than another rule that matches the evaluation context
  • The entity value provided in the evaluation context used for random sampling of units might be outside of the sample for the rule due to chance

Test Flag Resolution

Step-by-step testing guide

Rules Reference

Understand rule types and evaluation

Context Schema

Configure evaluation context attributes