Added test

test_crates/target-specific-dependencies/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+publish = false
+name = "target-specific-dependencies"
+version = "0.1.0"
+edition = "2021"
+
+[target.none.dependencies]
+async-std = { version = "1.6.2", optional = true }

test_crates/target-specific-dependencies/src/main.rs

@@ -0,0 +1,7 @@
+fn main() {
+    // This crate checks whether the tool correctly detects
+    // implicit features defined by target-specific dependencies.
+    // /~https://github.com/obi1kenobi/cargo-semver-checks/issues/369
+    #[cfg(not(feature = "async-std"))]
+    panic!("the tool should have built the project with this flag");
+}

tests/detects_target_dependencies.rs

@@ -0,0 +1,17 @@
+use assert_cmd::Command;
+
+#[test]
+fn detects_target_dependencies() {
+    // This test checks whether the tool correctly detects
+    // implicit features defined by target-specific dependencies.
+    // /~https://github.com/obi1kenobi/cargo-semver-checks/issues/369
+    let mut cmd = Command::cargo_bin("cargo-semver-checks").unwrap();
+    cmd.current_dir(format!("test_crates/target-specific-dependencies"))
+        .args([
+            "semver-checks",
+            "check-release",
+            "--baseline-root=.",
+        ])
+        .assert()
+        .success();
+}