diff --git a/crates/moonbuild/src/gen/gen_check.rs b/crates/moonbuild/src/gen/gen_check.rs
index 5561eb7a..f78cd0f2 100644
--- a/crates/moonbuild/src/gen/gen_check.rs
+++ b/crates/moonbuild/src/gen/gen_check.rs
@@ -18,6 +18,7 @@
 
 use super::cmd_builder::CommandBuilder;
 use super::n2_errors::{N2Error, N2ErrorKind};
+use super::util::self_in_test_import;
 use crate::gen::MiAlias;
 use anyhow::bail;
 use indexmap::map::IndexMap;
@@ -198,9 +199,7 @@ fn pkg_with_test_to_check_item(
     pkg: &Package,
     moonc_opt: &MooncOpt,
 ) -> anyhow::Result<CheckDepItem> {
-    let self_in_test_import = pkg.test_imports.iter().any(|import| {
-        import.path.make_full_path() == format!("{}/{}", pkg.root.full_name(), pkg.rel.full_name())
-    });
+    let self_in_test_import = self_in_test_import(pkg);
 
     if !self_in_test_import
         && pkg
diff --git a/crates/moonbuild/src/gen/gen_runtest.rs b/crates/moonbuild/src/gen/gen_runtest.rs
index 96f49f0c..baf1bf84 100644
--- a/crates/moonbuild/src/gen/gen_runtest.rs
+++ b/crates/moonbuild/src/gen/gen_runtest.rs
@@ -30,6 +30,7 @@ use moonutil::path::{ImportPath, PathComponent};
 use petgraph::graph::NodeIndex;
 
 use super::cmd_builder::CommandBuilder;
+use super::util::self_in_test_import;
 use super::{is_self_coverage_lib, is_skip_coverage_lib};
 use std::collections::HashSet;
 use std::path::PathBuf;
@@ -418,9 +419,7 @@ pub fn gen_package_blackbox_test(
     moonc_opt: &MooncOpt,
     patch_file: Option<PathBuf>,
 ) -> anyhow::Result<RuntestDepItem> {
-    let self_in_test_import = pkg.test_imports.iter().any(|import| {
-        import.path.make_full_path() == format!("{}/{}", pkg.root.full_name(), pkg.rel.full_name())
-    });
+    let self_in_test_import = self_in_test_import(pkg);
 
     if !self_in_test_import
         && pkg
diff --git a/crates/moonbuild/src/gen/util.rs b/crates/moonbuild/src/gen/util.rs
index 92ca027b..658c871b 100644
--- a/crates/moonbuild/src/gen/util.rs
+++ b/crates/moonbuild/src/gen/util.rs
@@ -112,3 +112,17 @@ pub fn nodes_to_pkg_sources(m: &ModuleDB, nodes: &[String]) -> Vec<(String, Stri
 pub fn graph_to_dot(m: &ModuleDB) {
     println!("{:?}", Dot::with_config(&m.graph, &[Config::EdgeNoLabel]));
 }
+
+pub fn self_in_test_import(pkg: &Package) -> bool {
+    // for package in the same level of mod, like "Yoorkin/prettyprinter", pkg.rel.full_name() is_empty
+    // current_pkg_full_path should be "Yoorkin/prettyprinter" instead of "Yoorkin/prettyprinter/"
+    let current_pkg_full_path = if pkg.rel.full_name().is_empty() {
+        pkg.root.full_name()
+    } else {
+        format!("{}/{}", pkg.root.full_name(), pkg.rel.full_name())
+    };
+
+    pkg.test_imports
+        .iter()
+        .any(|import| import.path.make_full_path() == current_pkg_full_path)
+}