test: exclude test logic from coverage reports (#1927)

That way, we actually get useful information.

Cargo.toml

@@ -72,6 +72,7 @@ criterion = "0.5.1"
 quickcheck = "1.0.0"
 quickcheck_macros = "1.0.0"
 minstant = "0.1.3"
+coverage-helper = "0.2.0"
 
 # workspace
 fvm = { path = "fvm", version = "~4.1.1", default-features = false }

fvm/Cargo.toml

@@ -49,6 +49,7 @@ static_assertions = "1.1.0"
 [dev-dependencies]
 pretty_assertions = "1.3.0"
 fvm = { path = ".", features = ["testing"], default-features = false }
+coverage-helper = { workspace = true }
 
 [features]
 default = ["opencl"]

fvm/src/lib.rs

@@ -7,6 +7,7 @@
 //!
 //! This package emits logs using the log façade. Configure the logging backend
 //! of your choice during the initialization of the consuming application.
+#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
 
 pub use kernel::default::DefaultKernel;
 pub use kernel::Kernel;

shared/Cargo.toml

@@ -41,6 +41,7 @@ rand = { workspace = true }
 serde_json = { workspace = true }
 multihash = { workspace = true, features = ["multihash-impl", "sha2", "sha3", "ripemd"] }
 quickcheck_macros = { workspace = true }
+coverage-helper = { workspace = true }
 fvm_shared = { path = ".", features = ["arb"] }
 rand_chacha = { workspace = true }
 rusty-fork = { version = "0.3.0", default-features = false }

shared/src/lib.rs

@@ -2,6 +2,8 @@
 // Copyright 2019-2022 ChainSafe Systems
 // SPDX-License-Identifier: Apache-2.0, MIT
 
+#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
+
 #[macro_use]
 extern crate lazy_static;