From 0a51f1ab1a07b1c92d6892741b4db9876990528d Mon Sep 17 00:00:00 2001
From: katelyn martin <katelyn@penumbralabs.xyz>
Date: Mon, 8 Jan 2024 12:40:14 -0500
Subject: [PATCH] =?UTF-8?q?feat:=20=F0=9F=93=9D=20implement=20mock-cometbf?=
 =?UTF-8?q?t=20crate=20(work-in-progress)?=
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this commit introduces a new library, in `crates/test/`. this library
contains a mock implementation of cometbft, for use in cargo integration
tests.

* this does NOT add the `penumbra-mock-cometbft` crate to the list of
  crates included in the rust documentation in
  `deployments/scripts/rust-docs`. the `penumbra-tct-property-test`
  crate was also not included in that list at the time of writing.

/!\ ------------------------------------------------------- /!\
/!\ NOTE: this is a rolling work-in-progress.               /!\
/!\ this branch will be force-pushed frequently until it is /!\
/!\ ready for review. proceed accordingly!                  /!\
/!\ ------------------------------------------------------- /!\
---
 Cargo.lock                           |  4 ++++
 Cargo.toml                           |  1 +
 crates/test/mock-cometbft/Cargo.toml |  8 ++++++++
 crates/test/mock-cometbft/src/lib.rs | 14 ++++++++++++++
 4 files changed, 27 insertions(+)
 create mode 100644 crates/test/mock-cometbft/Cargo.toml
 create mode 100644 crates/test/mock-cometbft/src/lib.rs

diff --git a/Cargo.lock b/Cargo.lock
index 501ee450dd..b85693f316 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5476,6 +5476,10 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "penumbra-mock-cometbft"
+version = "0.64.1"
+
 [[package]]
 name = "penumbra-num"
 version = "0.64.1"
diff --git a/Cargo.toml b/Cargo.toml
index e6ac21c3c2..a9898c9971 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,6 +44,7 @@ members = [
   "crates/bin/pcli",
   "crates/wasm",
   "crates/test/tct-property-test",
+  "crates/test/mock-cometbft",
   "crates/misc/measure",
   "crates/misc/tct-visualize",
   "crates/bench",
diff --git a/crates/test/mock-cometbft/Cargo.toml b/crates/test/mock-cometbft/Cargo.toml
new file mode 100644
index 0000000000..34aea8b30d
--- /dev/null
+++ b/crates/test/mock-cometbft/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "penumbra-mock-cometbft"
+version = "0.64.1"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/crates/test/mock-cometbft/src/lib.rs b/crates/test/mock-cometbft/src/lib.rs
new file mode 100644
index 0000000000..7d12d9af81
--- /dev/null
+++ b/crates/test/mock-cometbft/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}