aiken/examples/acceptance_tests/script_context/validators/mint.ak

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use aiken/dict
use aiken/list
use aiken/transaction.{Mint, ScriptContext}
use aiken/transaction/value
validator {
fn mint(redeemer: Data, ctx: ScriptContext) {
[
assert_purpose(ctx),
assert_mint(ctx.purpose, ctx.transaction),
assert_redeemers(ctx, redeemer),
]
|> list.and
}
}
fn assert_purpose(ctx) {
expect [my_policy_id] =
ctx.transaction.mint
|> value.without_lovelace
|> value.policies
expect Mint(policy_id) = ctx.purpose
my_policy_id == policy_id
}
fn assert_mint(purpose, transaction) {
expect Mint(policy_id) = purpose
let tokens = value.tokens(transaction.mint, policy_id)
when dict.get(tokens, #"666f6f") is {
None -> fail @"token not found"
Some(quantity) -> quantity == 1337
}
}
fn assert_redeemers(ctx, my_redeemer) {
expect Some(redeemer) = dict.get(ctx.transaction.redeemers, ctx.purpose)
my_redeemer == redeemer && dict.size(ctx.transaction.redeemers) == 1
}