Test
Important: The
Test
module is only available inside theligo run test
command. See also Testing LIGO.
type michelson_program
A type for code that is compiled to Michelson.
type michelson_contract
A type for Michelson compiled contracts.
type test_exec_error_balance_too_low = { contract_balance : tez , contract_too_low : address , spend_request : tez }
type test_exec_error = ["Rejected", michelson_program, address] | ["Balance_too_low", test_exec_error_balance_too_low] | ["Other", string]
A test error:
- The
Rejected
case means the called contract or its transitive callees (identified by the address in the second constructor argument) failed with some data (first constructor argument) - The
Balance_too_low
case means a contract tried to push an operation but did not have enough balance.contract_too_low
is the address of the contract,contract_balance
is the actual balance of the contract andspend_request
is the amount of tez that was required for the operation - The
Other
case wraps all the other possible reasons. Its argument is a string representation of the tezos_client error
type test_exec_result = ["Success", nat] | ["Fail", test_exec_error]
A test execution result:
- The
Success
case means the transaction went through without an issue. Its argument represent the total amount of gas consumed by the transaction - The "Fail reason" case means something went wrong. Its argument encode the causes of the failure (see type
test_exec_error
)
type test_baker_policy = ["By_round", int] | ["By_account", address] | ["Excluding", list<address>]
A test baking policy as used by the underlying testing helpers. The
case By_account
is the standard one, as used by Test.set_baker
.
Policies to select the next baker (taken from test helpers documentation):
By_round r
selects the baker at roundr
By_account pkh
selects the first slot for bakerpkh
Excluding pkhs
selects the first baker that doesn't belong topkhs
type typed_address <'param, 's>
A type for an address of a contract with parameter 'param
and storage
'storage
.
type unforged_ticket <s> = { ticketer : address, value : s, amount : nat }
A type for decompiling tickets.
let to_contract = (account: typed_address <'param, 'storage>) => contract <'param>
Get the contract corresponding to the default entrypoint of a typed
address: the contract parameter in the result will be the type of the
default entrypoint (generally 'param
, but this might differ if
'param
includes a "default" entrypoint).
let to_entrypoint = (entrypoint: string, account: typed_address <'param, 'storage>) => contract <'e>
Get the contract corresponding to an entrypoint of a typed address: the contract parameter in the result will be the type of the entrypoint, it needs to be annotated, entrypoint string should omit the prefix "%", but if passed a string starting with "%", it will be removed (and a warning emitted).
let originate_from_file = (filepath: string, entrypoint: string, views: list<string>, init: michelson_program, balance: tez) => [address, michelson_contract, int]
Originate a contract with a path to the contract file, an entrypoint, and a list of views, together with an initial storage and an initial balance.
let compile_contract_from_file = (filepath: string, entrypoint: string, views: list<string>) => michelson_contract
Compiles a contract with a path to the contract file, an entrypoint, and a list of views.
let originate = (contract: (p: 'param, s: 'storage) => [list <operation>, 'storage], init: 'storage, balance: tez) => [typed_address <'param, 'storage>, michelson_contract, int]
Originate a contract with an entrypoint function in curried form, initial storage and initial balance.
let originate_module = (contract: module_contract<'param, 'storage>, init: 'storage, balance: tez) => [typed_address <'param, 'storage>, michelson_contract, int]
Originate a contract from a module/namespace. To obtain a module_contract
from a module, use the contract_of
keyword.
let compile_contract = (contract: ('param, 'storage) => (list <operation>, 'storage)) => michelson_contract
Compiles a contract from an entrypoint function.
let read_contract_from_file = (filepath: string) => michelson_contract
Reads a contract from a .tz
file.
let originate_contract = (contract: michelson_contract, init: michelson_program, balance: tez) => address
Originate a contract with initial storage and initial balance.
let size = (contract: michelson_contract) => int
Measure the size of a contract.
Set the source for `Test.transfer` and `Test.originate`.let set_source = (source: address) => unit
let set_baker_policy = (policy: test_baker_policy) => unit
Force the baking policy for Test.transfer
and Test.originate
. By
default, the first bootstrapped account.
let set_baker = (source: address) => unit
Force the baker for Test.transfer
and Test.originate
, implemented
using Test.set_baker_policy
with By_account
. By default, the first
bootstrapped account.
let transfer = (addr: address, param: michelson_program, amount: tez) => test_exec_result
Bake a transaction by sending an amount of tez with a parameter from the current source to another account. Returns the amount of gas consumed by the execution of the contract.
let transfer_exn = (addr: address, parameter: michelson_program, amount: tez) => nat
Similar as Test.transfer
, but fails when anything goes wrong.
let transfer_to_contract = (addr: contract<'p>, param: 'p, amount: tez) => test_exec_result
Bake a transaction by sending an amount of tez with a parameter from the current source to a contract. Returns the amount of gas consumed by the execution of the contract.
let transfer_to_contract_exn = (addr: contract<'p>, parameter: 'p, amount: tez) => nat
Similar as Test.transfer_to_contract
, but fails when anything goes wrong.
let get_storage_of_address = (account: address) => michelson_program
Get the storage of an account in michelson_program
.
let get_storage = (account: typed_address <'p, 's>) => 's
Get the storage of a typed account.
let get_balance = (account: address) => tez
Get the balance of an account in tez.
let get_voting_power = (kh: key_hash) => nat
Return the voting power of a given contract. This voting power coincides with the weight of the contract in the voting listings (i.e., the rolls count) which is calculated at the beginning of every voting period.
let get_total_voting_power = nat
Return the total voting power of all contracts. The total voting power coincides with the sum of the rolls count of every contract in the voting listings. The voting listings is calculated at the beginning of every voting period.
let michelson_equal = (a: michelson_program, b: michelson_program) => bool
Compare two Michelson values.
let log = (a: 'a) => unit
Log a value.
let to_string = (a: 'a) => string
Convert a value to a string (same conversion as used by log
).
let to_json = (a: 'a) => string
Convert a value to its JSON representation (as a string). A JSON schema is available here.
let print = (s: string) => unit
Prints an string to stdout.
let println = (s: string) => unit
Prints an string to stdout, ended with a newline.
let eprint = (s: string) => unit
Prints an string to stderr.
String consisting of only a newline.let nl : string
let chr = (c: nat) => option<string>
String consisting of the character represented by a nat
in the
interval [0, 255].
Generate a number of random bootstrapped accounts with a default amount of 4000000 tez. The passed list can be used to overwrite the amount. By default, the state only has two bootstrapped accounts.let reset_state = (no_of_accounts: nat, amount: list<tez>) => unit
Notice that since Ithaca, a percentage of an account's balance is
frozen (5% in testing mode) in case the account can be taken to be a
validator (see
here),
and thus Test.get_balance
can show a different amount to the one
being set with Test.reset_state
.
let reset_state_at = (initial_timestamp : timestamp, no_of_accounts: nat, amount: list<tez>) => unit
Same as reset_state
but accepts a timestamp which is set as the initial timestamp of the genesis block.
let get_time = (_u: unit) => timestamp
Gets the current time (to be used in test mode).
let baker_account = ([string, key], amount : option<tez>) => unit
Adds an account (sk, pk)
as a baker. The change is only effective
after Test.reset_state
.
let register_delegate = (account : key_hash) => unit
Registers a key_hash
corresponding to an account as a delegate.
let register_constant = (constant : michelson_program) => string
Registers a global constant constant
, returns its hash as a string.
See the documentation for global constants for an example of usage.
let constant_to_michelson_program = (constant : string) => michelson_program
Turn a constant (as a string) into a michelson_program
. To be used
together with Test.register_constant
.
Parses Michelson (as string) into a `michelson_program`.let parse_michelson = (constant : string) => michelson_program
Registers the global constants listed in a JSON file. It takes a string (file path) and returns a list of strings corresponding to the hashes of the registered constants.let register_file_constants = (filepath : string) => list<string>
let bake_until_n_cycle_end = (cycles : nat) => unit
It bakes until a number of cycles pass, so that an account registered as delegate can effectively act as a baker.
Note : It can be used in tests to manually advance time
let new_account = (_: unit) => (string, key)
Creates and returns secret key & public key of a new account.
let add_account = (sk: string, pk: key) => unit
Adds an account specfied by secret key & public key to the test context.
let nth_bootstrap_account = (nth: int) => address
Returns the address of the nth bootstrapped account.
let nth_bootstrap_contract = (nth: nat) => address
Returns the address corresponding to the nth bootstrapped contract.
let bootstrap_contract = (balance: tez, contract: ('param, 'storage) => (list <operation>, 'storage), init: 'storage) => unit
Setup a bootstrap contract with an entrypoint function, initial storage and initial balance. Bootstrap contracts will be loaded in order, and they will be available only after reset.
let nth_bootstrap_typed_address = (nth: int) => typed_address <'p, 's>
Returns the typed address corresponding to the nth bootstrapped
contract currently loaded. The types are inferred from those contracts
loaded with Test.bootstrap_contract
(before reset).
Returns the address, key and secret key of the nth bootstrapped account.let get_bootstrap_account = (nth: nat) => [address, key, string]
Returns addresses of orginated accounts in the last transfer. It is given in the form of a map binding the address of the source of the origination operation to the addresses of newly originated accounts.let last_originations = (_: unit) => map<address , address list>
Compile a LIGO value to Michelson.let compile_value = (value: 'a) => michelson_program
Compile a LIGO value to Michelson. Currently it is a renaming of `compile_value`.let eval = (value: 'a) => michelson_program
let run = (func: ('a => 'b), value: 'a) => michelson_program
Run a function on an input, all in Michelson. More concretely: a)
compiles the function argument to Michelson f_mich
; b) compiles the
value argument (which was evaluated already) to Michelson v_mich
; c)
runs the Michelson interpreter on the code f_mich
with starting
stack [v_mich]
.
let decompile = (value: michelson_program) => 'a
Decompile a Michelson value to LIGO, following the (mandatory) type
annotation. Note: This operation can fail at run-time, in case that
the michelson_program
given cannot be decompiled to something
compatible with the annotated type.
let mutate_value : (index: nat, value: 'a) => option <['a, mutation]>
Mutates a value using a natural number as an index for the available mutations, returns an option for indicating whether mutation was successful or not.
let mutation_test : (value: 'a, tester: ('a -> 'b)) => option <['b, mutation]>
Given a value to mutate (first argument), it will try all the mutations available of it, passing each one to the function (second argument). On the first case of non failure when running the function on a mutation, the value and mutation involved will be returned.
let mutation_test_all : (value: 'a, tester: ('a -> 'b)) => list <['b, mutation]>
Given a value to mutate (first argument), it will try all the mutations of it, passing each one to the function (second argument). In case no failure arises when running the function on a mutation, the failure and mutation involved will be added to the list to be returned.
let originate_from_file_and_mutate : (filepath: string, entrypoint: string, views: list<string>, init: michelson_program, balance: tez, (tester: (originated_address: address, code: michelson_contract, size: int) => 'b)) => option<['b, mutation]>
Given a contract from a file (passed by filepath, entrypoint and views), an initial storage and balance, it will originate mutants of the contract and pass the result to the function (last argument). On the first case of non failure when running the function on a mutation, the value and mutation involved will be returned.
let originate_from_file_and_mutate_all : (filepath: string, entrypoint: string, views: list<string>, init: michelson_program, balance: tez, (tester: (originated_address: address, code: michelson_contract, size: int) => 'b)) => list<['b, mutation]>
Given a contract from a file (passed by filepath, entrypoint and views), an initial storage and balance, it will originate mutants of the contract and pass the result to the function (last argument). In case no failure arises when running the function on a mutation, the failure and mutation involved will be added to the list to be returned.
let originate_module_and_mutate : (contract: module_contract<'p, 's>, init: 's, balance: tez, (tester: (originated_address: typed_address<'p, 's>, code: michelson_contract, size: int) => 'b)) => option<['b, mutation]>
Given a contract as a module/namespace, an initial storage and balance, it will originate mutants of the contract and pass the result to the function (last argument). On the first case of non failure when running the function on a mutation, the value and mutation involved will be returned.
let originate_module_and_mutate_all : (contract: module_contract<'p, 's>, init: 's, balance: tez, (tester: (originated_address: typed_address<'p, 's>, code: michelson_contract, size: int) => 'b)) => list<['b, mutation]>
Given a contract as a module/namespace, an initial storage and balance, it will originate mutants of the contract and pass the result to the function (last argument). In case no failure arises when running the function on a mutation, the failure and mutation involved will be added to the list to be returned.
let save_mutation : (path: string, mutation: mutation) => option <string>
This function reconstructs a file from a mutation (second argument),
and saves it to a file in the directory path (first argument). It
returns an optional string indicating the filename where the mutation
was saved, or None
if there was an error.
let random : (u: unit) => 'a
This function creates a random value for a chosen type.
let cast_address : (addr: adress) => typed_address <'param, 'storage>
This function casts an address to a typed address. You will need to annotate the result with the type you expect.
let set_big_map: (id: 'int, big_map: big_map<'key, 'value>) => unit
The testing framework keeps an internal reference to the values corresponding to big map identifiers. This function allows to override the value of a particular big map identifier. It should not be normally needed, except in particular circumstances such as using custom bootstrap contracts that initialize big maps.
let save_context: (u: unit) => unit
Takes current testing framework context and saves it, pushing it into a stack of contexts.
let restore_context: (u: unit) => unit
Pops a testing framework context from the stack of contexts, and sets it up as the new current context. In case the stack was empty, the current context is kept.
let drop_context: (u: unit) => unit
Drops a testing framework context from the stack of contexts. In case the stack was empty, nothing is done.
let sign: (secret_key: string, data: bytes) => signature
Creates a signature of bytes
from a string
representing a secret
key, it can be checked with Crypto.check
.
let set_print_values = (u: unit) => unit
Turns on the printing of test
prefixed values at the end of tests. This is the default behaviour.
let unset_print_values = (u: unit) => unit
Turns off the printing of test
prefixed values at the end of tests.
let get_last_events_from: typed_address <'p,'s> => string => list <'a>
Returns the list of all the event payloads emited with a given tag by a given address. Any call to this function must be annotated with the expected payload type.
Failwith and asserts
let failwith: (message: 'a) => unit
Cause the testing framework to fail.
let assert: (condition: bool) => unit
Check if a certain condition has been met. If not the testing framework will fail.
let assert_with_error: (condition: bool, message: string) => unit
Check if a certain condition has been met. If not the testing framework will fail with the string passed as message.
Proxy_ticket
Helper functions for working with tickets in the LIGO Testing framework.
Find the complete API reference here