sim:expect

Assert that a condition is true.

Smart blocks: build-time inputs only. Simulation expectations inspect executed receipts at build time.

Syntax

sim:expect <condition>

Arguments

Name	Type	Evaluation	Description
condition	bool	Build time	Boolean condition to assert

Examples

# Assert a simple condition
sim:expect true

# Assert with variables
set $a 42
sim:expect @bool($a == 42)

Notes

• If the condition is false, the script halts with an assertion error
• Typically used inside sim:fork blocks to verify simulated outcomes

See Also

• fork — simulate on a forked chain
• @bool — boolean expressions