Add regression test for components

.github/workflows/CI.yml

@@ -164,6 +164,7 @@ jobs:
         if: matrix.os != 'macos-latest'
         env:
           RUST_BACKTRACE: full
+          LINUX_CI: 1 # Needed for components...
       - name: Execute tests (mac, no features)
         run: cargo test --no-default-features -- --test-threads 1
         if: matrix.os == 'macos-latest'
@@ -180,6 +181,7 @@ jobs:
           cargo test --features serde --doc
         env:
           RUST_BACKTRACE: full
+          LINUX_CI: 1 # Needed for components...
 
   c_interface:
     runs-on: ubuntu-latest

tests/components.rs

@@ -0,0 +1,22 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
+#[test]
+fn test_components() {
+    use std::env::var;
+
+    let mut c = sysinfo::Components::new();
+    assert!(c.is_empty());
+
+    // Unfortunately, we can't get components in the CI...
+    if !sysinfo::IS_SUPPORTED_SYSTEM
+        || cfg!(windows)
+        || var("FREEBSD_CI").is_ok()
+        || var("LINUX_CI").is_ok()
+        || var("APPLE_CI").is_ok()
+    {
+        return;
+    }
+
+    c.refresh_list();
+    assert!(!c.is_empty());
+}