diff --git a/crates/project-model/src/toolchain_info/rustc_cfg.rs b/crates/project-model/src/toolchain_info/rustc_cfg.rs
index 791d1773d7..afcc812079 100644
--- a/crates/project-model/src/toolchain_info/rustc_cfg.rs
+++ b/crates/project-model/src/toolchain_info/rustc_cfg.rs
@@ -96,3 +96,29 @@ fn rustc_print_cfg(
 
     utf8_stdout(&mut cmd).with_context(|| format!("unable to fetch cfgs via `{cmd:?}`"))
 }
+
+#[cfg(test)]
+mod tests {
+    use paths::{AbsPathBuf, Utf8PathBuf};
+
+    use crate::{ManifestPath, Sysroot};
+
+    use super::*;
+
+    #[test]
+    fn cargo() {
+        let manifest_path = concat!(env!("CARGO_MANIFEST_DIR"), "/Cargo.toml");
+        let sysroot = Sysroot::empty();
+        let manifest_path =
+            ManifestPath::try_from(AbsPathBuf::assert(Utf8PathBuf::from(manifest_path))).unwrap();
+        let cfg = QueryConfig::Cargo(&sysroot, &manifest_path);
+        assert_ne!(get(cfg, None, &FxHashMap::default()), vec![]);
+    }
+
+    #[test]
+    fn rustc() {
+        let sysroot = Sysroot::empty();
+        let cfg = QueryConfig::Rustc(&sysroot, env!("CARGO_MANIFEST_DIR").as_ref());
+        assert_ne!(get(cfg, None, &FxHashMap::default()), vec![]);
+    }
+}
diff --git a/crates/project-model/src/toolchain_info/target_data_layout.rs b/crates/project-model/src/toolchain_info/target_data_layout.rs
index 9986c66131..94645a91f6 100644
--- a/crates/project-model/src/toolchain_info/target_data_layout.rs
+++ b/crates/project-model/src/toolchain_info/target_data_layout.rs
@@ -55,3 +55,29 @@ pub fn get(
         .with_context(|| format!("unable to fetch target-data-layout via `{cmd:?}`"))
         .and_then(process)
 }
+
+#[cfg(test)]
+mod tests {
+    use paths::{AbsPathBuf, Utf8PathBuf};
+
+    use crate::{ManifestPath, Sysroot};
+
+    use super::*;
+
+    #[test]
+    fn cargo() {
+        let manifest_path = concat!(env!("CARGO_MANIFEST_DIR"), "/Cargo.toml");
+        let sysroot = Sysroot::empty();
+        let manifest_path =
+            ManifestPath::try_from(AbsPathBuf::assert(Utf8PathBuf::from(manifest_path))).unwrap();
+        let cfg = QueryConfig::Cargo(&sysroot, &manifest_path);
+        assert!(get(cfg, None, &FxHashMap::default()).is_ok());
+    }
+
+    #[test]
+    fn rustc() {
+        let sysroot = Sysroot::empty();
+        let cfg = QueryConfig::Rustc(&sysroot, env!("CARGO_MANIFEST_DIR").as_ref());
+        assert!(get(cfg, None, &FxHashMap::default()).is_ok());
+    }
+}
diff --git a/crates/project-model/src/toolchain_info/target_tuple.rs b/crates/project-model/src/toolchain_info/target_tuple.rs
index 55e033caec..0476de58f2 100644
--- a/crates/project-model/src/toolchain_info/target_tuple.rs
+++ b/crates/project-model/src/toolchain_info/target_tuple.rs
@@ -77,3 +77,29 @@ fn parse_output_cargo_config_build_target(stdout: String) -> anyhow::Result<Vec<
 
     serde_json::from_str(trimmed).context("Failed to parse `build.target` as an array of target")
 }
+
+#[cfg(test)]
+mod tests {
+    use paths::{AbsPathBuf, Utf8PathBuf};
+
+    use crate::{ManifestPath, Sysroot};
+
+    use super::*;
+
+    #[test]
+    fn cargo() {
+        let manifest_path = concat!(env!("CARGO_MANIFEST_DIR"), "/Cargo.toml");
+        let sysroot = Sysroot::empty();
+        let manifest_path =
+            ManifestPath::try_from(AbsPathBuf::assert(Utf8PathBuf::from(manifest_path))).unwrap();
+        let cfg = QueryConfig::Cargo(&sysroot, &manifest_path);
+        assert!(get(cfg, None, &FxHashMap::default()).is_ok());
+    }
+
+    #[test]
+    fn rustc() {
+        let sysroot = Sysroot::empty();
+        let cfg = QueryConfig::Rustc(&sysroot, env!("CARGO_MANIFEST_DIR").as_ref());
+        assert!(get(cfg, None, &FxHashMap::default()).is_ok());
+    }
+}
diff --git a/crates/project-model/src/toolchain_info/version.rs b/crates/project-model/src/toolchain_info/version.rs
index a873944dd8..e795fdf1d6 100644
--- a/crates/project-model/src/toolchain_info/version.rs
+++ b/crates/project-model/src/toolchain_info/version.rs
@@ -30,3 +30,29 @@ pub(crate) fn get(
     }
     anyhow::Ok(version)
 }
+
+#[cfg(test)]
+mod tests {
+    use paths::{AbsPathBuf, Utf8PathBuf};
+
+    use crate::{ManifestPath, Sysroot};
+
+    use super::*;
+
+    #[test]
+    fn cargo() {
+        let manifest_path = concat!(env!("CARGO_MANIFEST_DIR"), "/Cargo.toml");
+        let sysroot = Sysroot::empty();
+        let manifest_path =
+            ManifestPath::try_from(AbsPathBuf::assert(Utf8PathBuf::from(manifest_path))).unwrap();
+        let cfg = QueryConfig::Cargo(&sysroot, &manifest_path);
+        assert!(get(cfg, &FxHashMap::default()).is_ok());
+    }
+
+    #[test]
+    fn rustc() {
+        let sysroot = Sysroot::empty();
+        let cfg = QueryConfig::Rustc(&sysroot, env!("CARGO_MANIFEST_DIR").as_ref());
+        assert!(get(cfg, &FxHashMap::default()).is_ok());
+    }
+}
diff --git a/crates/project-model/src/workspace.rs b/crates/project-model/src/workspace.rs
index 95f8bb9950..1073151732 100644
--- a/crates/project-model/src/workspace.rs
+++ b/crates/project-model/src/workspace.rs
@@ -245,27 +245,10 @@ impl ProjectWorkspace {
         if let Err(e) = &data_layout {
             tracing::error!(%e, "failed fetching data layout for {cargo_toml:?} workspace");
         }
+        sysroot.load_workspace(&SysrootSourceWorkspaceConfig::CargoMetadata(
+            sysroot_metadata_config(&config.extra_env, &targets),
+        ));
 
-        let (meta, error) = CargoWorkspace::fetch_metadata(
-            cargo_toml,
-            cargo_toml.parent(),
-            &CargoMetadataConfig {
-                features: config.features.clone(),
-                targets: targets.clone(),
-                extra_args: config.extra_args.clone(),
-                extra_env: config.extra_env.clone(),
-            },
-            &sysroot,
-            false,
-            progress,
-        )
-        .with_context(|| {
-            format!(
-                "Failed to read Cargo metadata from Cargo.toml file {cargo_toml}, {toolchain:?}",
-            )
-        })?;
-        let cargo_config_extra_env = cargo_config_env(cargo_toml, &config.extra_env, &sysroot);
-        let cargo = CargoWorkspace::new(meta, cargo_toml.clone(), cargo_config_extra_env);
         let rustc = rustc_dir.and_then(|rustc_dir| {
             info!(workspace = %cargo_toml, rustc_dir = %rustc_dir, "Using rustc source");
             match CargoWorkspace::fetch_metadata(
@@ -302,9 +285,28 @@ impl ProjectWorkspace {
                 }
             }
         });
-        sysroot.load_workspace(&SysrootSourceWorkspaceConfig::CargoMetadata(
-            sysroot_metadata_config(&config.extra_env, &targets),
-        ));
+
+        let (meta, error) = CargoWorkspace::fetch_metadata(
+            cargo_toml,
+            cargo_toml.parent(),
+            &CargoMetadataConfig {
+                features: config.features.clone(),
+                targets,
+                extra_args: config.extra_args.clone(),
+                extra_env: config.extra_env.clone(),
+            },
+            &sysroot,
+            false,
+            progress,
+        )
+        .with_context(|| {
+            format!(
+                "Failed to read Cargo metadata from Cargo.toml file {cargo_toml}, {toolchain:?}",
+            )
+        })?;
+        let cargo_config_extra_env = cargo_config_env(cargo_toml, &config.extra_env, &sysroot);
+        let cargo = CargoWorkspace::new(meta, cargo_toml.clone(), cargo_config_extra_env);
+
         Ok(ProjectWorkspace {
             kind: ProjectWorkspaceKind::Cargo {
                 cargo,