refactor(tests): fix clippy warnings

tests/common/host.rs

@@ -0,0 +1,14 @@
+use crate::common::manifest::load_example_manifest;
+use captra::HostState;
+use ed25519_dalek::SigningKey;
+use rand::rngs::OsRng;
+
+/// Build a [`HostState`] with a fixed seed and a fresh [`SigningKey`] (`OsRng`).
+/// # Panics
+#[must_use]
+pub fn make_host_with_seed(seed: u64) -> HostState {
+    let manifest = load_example_manifest();
+    let mut csprng = OsRng;
+    let keypair = SigningKey::generate(&mut csprng);
+    HostState::new(manifest, seed, keypair)
+}

tests/common/manifest.rs

@@ -0,0 +1,9 @@
+use captra::{CapabilityManifest, load_manifest};
+
+/// Load the example manifest bundled with the repo.
+/// # Panics
+#[inline]
+#[must_use]
+pub fn load_example_manifest() -> CapabilityManifest {
+    load_manifest("examples/manifest.json").expect("examples/manifest.json must exists")
+}

tests/common/mod.rs

@@ -0,0 +1,6 @@
+#[allow(dead_code)]
+pub mod host;
+#[allow(dead_code)]
+pub mod manifest;
+#[allow(dead_code)]
+pub mod wasm;

tests/common/wasm.rs

@@ -0,0 +1,14 @@
+use captra::{HostState, add_wasm_linker_funcs};
+use wasmtime::{Engine, Linker, Store};
+
+/// Create a wasmtime engine + linker with your host functions registered,
+/// and a [`Store`] that owns the given [`HostState`].
+/// # Panics
+#[must_use]
+pub fn wasm_store_with_hosts(host: HostState) -> (Engine, Linker<HostState>, Store<HostState>) {
+    let engine = Engine::default();
+    let mut linker = Linker::new(&engine);
+    add_wasm_linker_funcs(&mut linker).expect("linker registration");
+    let store = Store::new(&engine, host);
+    (engine, linker, store)
+}