testexpr

Overview ¶

Command testexpr evaluates an expr-lang expression against a JSON environment and prints the result. Meant for local iteration on spec expressions, not for end users.

Usage:

go run ./cmd/testexpr <expression> [envJSON|@file|-]

The env arg defaults to "{}" when omitted. "-" reads JSON from stdin; "@file" reads it from a file; anything else is parsed as a literal JSON string. The expression is evaluated with the same helper functions (truncate, coalesce, epochMs, ...) available to spec expressions, injected via exprenv.BaseFuncs.