WIP

tests/integration/pgo.rs

@@ -325,10 +325,16 @@ rustflags = ["-Ctarget-cpu=native"]
         ),
     );
 
+    eprintln!("{}", &format!(
+        r#"
+[target.{}]
+rustflags = ["-Ctarget-cpu=native"]
+"#,
+        target
+    ));
     let output = project.cmd(&["build", "--", "-v"]).run()?;
-    println!("{}", output.stderr());
-    assert!(output.stderr().contains("-Ctarget-cpu=native"));
-    assert!(output.stderr().contains("-Cprofile-generate"));
+    output.assert_stderr_contains("-Ctarget-cpu=native");
+    output.assert_stderr_contains("-Cprofile-generate");
     output.assert_ok();
 
     Ok(())

tests/integration/utils/mod.rs

@@ -167,6 +167,8 @@ pub trait OutputExt {
     fn assert_ok(self) -> Self;
     fn assert_error(self) -> Self;
 
+    fn assert_stderr_contains(&self, needle: &str);
+
     fn stdout(&self) -> String;
     fn stderr(&self) -> String;
 }
@@ -190,6 +192,13 @@ impl OutputExt for Output {
         self
     }
 
+    fn assert_stderr_contains(&self, needle: &str) {
+        let stderr = self.stderr();
+        if !stderr.contains(needle) {
+            panic!("STDERR\n{stderr}\nDOES NOT CONTAIN\n{needle}");
+        }
+    }
+
     fn stdout(&self) -> String {
         String::from_utf8_lossy(&self.stdout).to_string()
     }