core-lightning/contrib/pyln-testing
Rusty Russell 7b2c791dcf doc: fix up missing fields from schemas.
This allows the next patch (which makes the schemas stricter) to not
break our tests.

We add some missing fields (including dev fields, but they're empty and hidden),
and add a few minor clarifications and a spelling fix.  Most of these are new
schemas for this release, so no mention in Changelog.

Here is the difference in the man pages:

    --- doc/lightning-askrene-inform-channel.7.md.old	2024-10-29 17:33:07.714521584 +1030
    +++ doc/lightning-askrene-inform-channel.7.md	2024-10-29 17:42:37.434280109 +1030
    @@ -24,6 +24,8 @@
     - **short\_channel\_id\_dir** (short\_channel\_id\_dir): The short channel id and direction
    +- **layer** (string): The name of the layer to apply this change to.
    +- **timestamp** (u64): The UNIX timestamp when this constraint was created.
     - **maximum\_msat** (msat, optional): The maximum value which this channel could pass.
    --- doc/lightning-askrene-listlayers.7.md.old	2024-10-29 17:33:07.716521571 +1030
    +++ doc/lightning-askrene-listlayers.7.md	2024-10-29 17:42:37.424280316 +1030
    @@ -29,13 +29,16 @@
     - **channel\_updates** (array of objects):
    +  - **short\_channel\_id\_dir** (short\_channel\_id\_dir): The short channel id and direction this update applies to.
    +  - **enabled** (boolean, optional): True if this can be used, false otherwise.
       - **htlc\_minimum\_msat** (msat, optional): The minimum value allowed in this direction.
       - **htlc\_maximum\_msat** (msat, optional): The maximum value allowed in this direction.
       - **fee\_base\_msat** (msat, optional): The base fee to apply to use the channel in this direction.
       - **fee\_proportional\_millionths** (u32, optional): The proportional fee (in parts per million) to apply to use the channel in this direction.
    -  - **delay** (u16, optional): The CLTV delay required for this direction.
    +  - **cltv\_expiry\_delta** (u16, optional): The CLTV delay required for this direction.
     - **constraints** (array of objects):
       - **short\_channel\_id\_dir** (short\_channel\_id\_dir): The short channel id and direction
    +  - **timestamp** (u64, optional): The UNIX timestamp when this constraint was created.
       - **maximum\_msat** (msat, optional): The maximum value which this channel could pass.
    --- doc/lightning-askrene-listreservations.7.md.old	2024-10-29 17:33:07.719521550 +1030
    +++ doc/lightning-askrene-listreservations.7.md	2024-10-29 17:42:37.428280233 +1030
    @@ -16,7 +16,7 @@
    -On success, an object containing **layers** is returned. It is an array of objects, where each object contains:
    +On success, an object containing **reservations** is returned. It is an array of objects, where each object contains:
    --- doc/lightning-autoclean-status.7.md.old	2024-10-29 17:33:07.732521462 +1030
    +++ doc/lightning-autoclean-status.7.md	2024-10-29 17:42:37.441279965 +1030
    @@ -9,7 +9,7 @@
     
    -The **autoclean-status** RPC command tells you about the status of the autclean plugin, optionally for only one subsystem.
    +The **autoclean-status** RPC command tells you about the status of the autoclean plugin, optionally for only one subsystem.
     
    --- doc/lightning-renepay.7.md.old	2024-10-29 17:33:07.927520140 +1030
    +++ doc/lightning-renepay.7.md	2024-10-29 17:42:37.996268504 +1030
    @@ -58,6 +58,9 @@
     - **status** (string) (one of "complete", "pending", "failed"): Status of payment.
    +- **bolt11** (string, optional): The bolt11 invoice paid. *(added v23.08)*
    +- **bolt12** (string, optional): The bolt12 invoice paid. *(added v23.08)*
    +- **groupid** (u64, optional): The groupid used for these payment parts (as can be seen in listsendpays) *(added v23.08)*
     - **destination** (pubkey, optional): The final destination of the payment.
    --- doc/lightning-sendonion.7.md.old	2024-10-29 17:33:07.937520073 +1030
    +++ doc/lightning-sendonion.7.md	2024-10-29 17:42:37.957269309 +1030
    @@ -22,7 +22,7 @@
    -- **first\_hop** (object): Instructs Core Lightning which peer to send the onion to. It is a JSON dictionary that corresponds to the first element of the route array returned by *getroute*.:
    +- **first\_hop** (object): Instructs Core Lightning which peer to send the onion to. It is a JSON dictionary that corresponds to the first element of the route array returned by *getroute* (so fields not mentioned here are ignored).:
    
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-EXPERIMENTAL: `renepay` return fields documented in schema (`bolt11`, `bolt12` and `groupid`)
2024-10-30 15:39:12 +10:30
..
pyln/testing doc: fix up missing fields from schemas. 2024-10-30 15:39:12 +10:30
tests pyln-testing: Add a dummy test to check functionality 2020-08-30 20:03:42 +02:00
.gitignore pyln: Update the makefile to use poetry for publishing 2022-05-01 14:22:49 +09:30
Makefile pyln: use poetry version, add target to check version, use poetry publish. 2022-09-22 11:41:11 +02:00
pyproject.toml release: Update the changelog for point release v24.08.2 2024-10-18 09:06:17 -07:00
README.md pyln: Make the grpcio dependencies optional 2023-07-21 15:12:03 +09:30

pyln-testing: A library to write tests against Core Lightning

This library implements a number of utilities that help building tests for Core Lightning nodes. In particular it provides a number of pytest fixtures that allow the management of a test network of a given topology and then execute a test scenarion.

pyln-testing is used by Core Lightning for its internal tests, and by the community plugin directory to exercise the plugins.

Installation

pyln-testing is available on pip:

pip install pyln-testing

Alternatively you can also install the development version to get access to currently unreleased features by checking out the Core Lightning source code and installing into your python3 environment:

git clone https://github.com/ElementsProject/lightning.git
cd lightning/contrib/pyln-testing
poetry install

This will add links to the library into your environment so changing the checked out source code will also result in the environment picking up these changes. Notice however that unreleased versions may change API without warning, so test thoroughly with the released version.

Testing GRPC Bindings

The grpc bindings can be tested by setting the CLN_TEST_GRPC=1 environment variable. This will cause the testing framework to use a grpc client to talk to the cln-grpc plugin, rather than talking directly to the node's JSON-RPC interface. Since the GRPC related dependencies are guarded behind a feature flag in pyln-testing you'll need to install it with the grpc feature enabled in order to be able to run in this mode.

Below is a diagram of how the normal JSON-RPC interaction looks like, followed by one that display the grpc interaction:

CLN -- JSON-RPC -- LightningRpc -- pytest
\_____CLN_____/    \_______pytest_______/
CLN -- JSON-RPC -- cln-rpc -- rpc2grpc converters -- grpc interface -- python grpc client -- python grpc2json converter -- pytest
\_____CLN_____/    \___________cln-grpc-plugin____________________/    \__________________________pytest________________________/

As you can see the grpc mode attempts to emulate the simple JSON-RPC mode by passing the call through a number of conversions. The last step grpc2json is rather incomplete, and will cause quite a few tests to fail for now, until the conversion is completed and we reach feature parity between the interaction modes.