fix(cargo-codspeed): fix build when package is included in its deps

Fix #37

crates/cargo-codspeed/src/build.rs

@@ -18,9 +18,14 @@ fn get_compile_options(
     features: &Option<Vec<String>>,
     package: &Package,
     benches: Vec<&str>,
+    is_root: bool,
 ) -> Result<CompileOptions> {
     let mut compile_opts = CompileOptions::new(config, CompileMode::Build)?;
-    compile_opts.spec = Packages::Packages(vec![package.name().to_string()]);
+
+    // if the package is not the root package, we need to specify the package to build
+    if !is_root {
+        compile_opts.spec = Packages::Packages(vec![package.name().to_string()]);
+    }
     if let Some(features) = features {
         compile_opts.cli_features.features = Rc::new(
             features
@@ -51,14 +56,17 @@ pub fn build_benches(
     package_name: Option<String>,
     features: Option<Vec<String>>,
 ) -> Result<()> {
-    let package = match package_name.as_ref() {
-        Some(package_name) => ws
-            .members()
-            .find(|p| p.name().to_string() == *package_name)
-            .ok_or_else(|| anyhow!("Package {} not found", package_name))?,
-        None => ws.current().map_err(|_| anyhow!("No package found. If working with a workspace please use the -p option to specify a member."))?,
+    let (package, is_root) = match package_name.as_ref() {
+        Some(package_name) => (
+            ws.members()
+                .find(|p| p.name().to_string() == *package_name)
+                .ok_or_else(|| anyhow!("Package {} not found", package_name))?,
+            false,
+        ),
+        None => {
+            (ws.current().map_err(|_| anyhow!("No package found. If working with a workspace please use the -p option to specify a member."))?, true)
+        }
     };
-
     let all_benches = package
         .targets()
         .iter()
@@ -99,7 +107,7 @@ pub fn build_benches(
     ws.config()
         .shell()
         .status_with_color("Building", benches_names_str.clone(), Color::Yellow)?;
-    let compile_opts = get_compile_options(config, &features, package, benches_names)?;
+    let compile_opts = get_compile_options(config, &features, package, benches_names, is_root)?;
     let result = cargo::ops::compile(ws, &compile_opts)?;
     let built_benches = result
         .tests

crates/cargo-codspeed/tests/helpers.rs

@@ -20,6 +20,7 @@ pub enum Project {
     Simple,
     Features,
     Workspace,
+    PackageInDeps,
 }
 
 pub fn setup(dir: &str, project: Project) -> String {
@@ -55,6 +56,13 @@ pub fn setup(dir: &str, project: Project) -> String {
                 workspace_root.join("crates").to_str().unwrap(),
             );
         }
+        Project::PackageInDeps => {
+            replace_in_file(
+                tmp_dir.join("Cargo.toml").to_str().unwrap(),
+                "../../..",
+                workspace_root.join("crates").to_str().unwrap(),
+            );
+        }
     }
     tmp_dir.to_str().unwrap().to_string()
 }

crates/cargo-codspeed/tests/package_in_deps.in/.gitignore

@@ -0,0 +1,2 @@
+Cargo.lock
+target/

crates/cargo-codspeed/tests/package_in_deps.in/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "blit"
+version = "0.8.5"
+edition = "2021"
+publish = false
+
+[dependencies]
+bencher = "0.1.5"
+codspeed = { path = "../../../codspeed" }
+codspeed-bencher-compat = { path = "../../../bencher_compat" }
+
+[dev-dependencies]
+blit = "*"
+
+[[bench]]
+name = "bencher_example"
+harness = false

crates/cargo-codspeed/tests/package_in_deps.in/benches/bencher_example.rs

@@ -0,0 +1,16 @@
+use codspeed::codspeed::black_box;
+use codspeed_bencher_compat::{benchmark_group, benchmark_main, Bencher};
+
+pub fn a(bench: &mut Bencher) {
+    bench.iter(|| (0..100).fold(0, |x, y| black_box(x + y)))
+}
+
+pub fn b(bench: &mut Bencher) {
+    const N: usize = 1024;
+    bench.iter(|| vec![0u8; N]);
+
+    bench.bytes = N as u64;
+}
+
+benchmark_group!(benches, a, b);
+benchmark_main!(benches);

crates/cargo-codspeed/tests/package_in_deps.rs

@@ -0,0 +1,17 @@
+use predicates::str::contains;
+
+mod helpers;
+use helpers::*;
+
+const DIR: &str = "tests/package_in_deps.in";
+
+#[test]
+fn test_package_in_deps_build() {
+    let dir = setup(DIR, Project::PackageInDeps);
+    cargo_codspeed(&dir)
+        .arg("build")
+        .assert()
+        .success()
+        .stderr(contains("Finished built 1 benchmark suite(s)"));
+    teardown(dir);
+}