diff --git a/crates/oxc_resolver/README.md b/crates/oxc_resolver/README.md
index d161e5a53..fdf960dc0 100644
--- a/crates/oxc_resolver/README.md
+++ b/crates/oxc_resolver/README.md
@@ -37,6 +37,8 @@
 ## Test
 
 Tests ported from [enhanced-resolve](https://github.com/webpack/enhanced-resolve).
+Test cases are located in `./src/tests`, fixtures are located in `./tests`
+
 Crossed out test files are irrelevant.
 
 - [x] ~CachedInputFileSystem.test.js~
diff --git a/crates/oxc_resolver/src/lib.rs b/crates/oxc_resolver/src/lib.rs
index f6bd74040..1e537fc5a 100644
--- a/crates/oxc_resolver/src/lib.rs
+++ b/crates/oxc_resolver/src/lib.rs
@@ -17,6 +17,9 @@ mod path;
 mod request;
 mod resolution;
 
+#[cfg(test)]
+mod tests;
+
 use std::{
     borrow::Cow,
     cmp::Ordering,
@@ -27,15 +30,15 @@ use std::{
 use crate::{
     cache::{Cache, CacheValue},
     file_system::FileSystemOs,
+    package_json::{ExportsField, MatchObject},
     package_json::{ExportsKey, PackageJson},
+    path::PathUtil,
     request::{Request, RequestPath},
 };
 pub use crate::{
     error::{JSONError, ResolveError},
     file_system::{FileMetadata, FileSystem},
     options::{Alias, AliasValue, ResolveOptions},
-    package_json::{ExportsField, MatchObject},
-    path::PathUtil,
     resolution::Resolution,
 };
 
@@ -535,9 +538,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
     }
 
     /// PACKAGE_EXPORTS_RESOLVE(packageURL, subpath, exports, conditions)
-    ///
-    /// # Errors
-    pub fn package_exports_resolve(
+    fn package_exports_resolve(
         &self,
         package_url: &Path,
         subpath: &str,
@@ -550,8 +551,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
             let mut without_dot = false;
             for key in map.keys() {
                 has_dot = has_dot || matches!(key, ExportsKey::Main | ExportsKey::Pattern(_));
-                without_dot = without_dot
-                    || matches!(key, ExportsKey::Hash(_) | ExportsKey::CustomCondition(_));
+                without_dot = without_dot || matches!(key, ExportsKey::CustomCondition(_));
                 if has_dot && without_dot {
                     return Err(ResolveError::InvalidPackageConfig(
                         package_url.join("package.json"),
@@ -661,9 +661,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
     }
 
     /// PACKAGE_IMPORTS_EXPORTS_RESOLVE(matchKey, matchObj, packageURL, isImports, conditions)
-    ///
-    /// # Errors
-    pub fn package_imports_exports_resolve(
+    fn package_imports_exports_resolve(
         &self,
         match_key: &str,
         match_obj: &MatchObject,
diff --git a/crates/oxc_resolver/src/package_json.rs b/crates/oxc_resolver/src/package_json.rs
index 7344915ab..464ad2d83 100644
--- a/crates/oxc_resolver/src/package_json.rs
+++ b/crates/oxc_resolver/src/package_json.rs
@@ -75,7 +75,6 @@ impl ExportsField {
 pub enum ExportsKey {
     Main,
     Pattern(String),
-    Hash(String),
     CustomCondition(String),
 }
 
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/alias.rs b/crates/oxc_resolver/src/tests/alias.rs
similarity index 97%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/alias.rs
rename to crates/oxc_resolver/src/tests/alias.rs
index 3c083a538..181dd0580 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/alias.rs
+++ b/crates/oxc_resolver/src/tests/alias.rs
@@ -2,11 +2,9 @@
 
 use std::path::{Path, PathBuf};
 
-use oxc_resolver::{
-    AliasValue, Resolution, ResolveError, ResolveOptions, Resolver, ResolverGeneric,
-};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver, ResolverGeneric};
 
-use crate::MemoryFS;
+use super::memory_fs::MemoryFS;
 
 #[test]
 #[cfg(not(target_os = "windows"))] // MemoryFS's path separator is always `/` so the test will not pass in windows.
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/browser_field.rs b/crates/oxc_resolver/src/tests/browser_field.rs
similarity index 97%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/browser_field.rs
rename to crates/oxc_resolver/src/tests/browser_field.rs
index cfbe06be7..092312205 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/browser_field.rs
+++ b/crates/oxc_resolver/src/tests/browser_field.rs
@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("browser-module")
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/exports_field.rs b/crates/oxc_resolver/src/tests/exports_field.rs
similarity index 99%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/exports_field.rs
rename to crates/oxc_resolver/src/tests/exports_field.rs
index 3cea0769d..2accbd7a9 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/exports_field.rs
+++ b/crates/oxc_resolver/src/tests/exports_field.rs
@@ -2,7 +2,7 @@
 //!
 //! The huge exports field test cases are at the bottom of this file.
 
-use oxc_resolver::{ExportsField, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{ExportsField, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
 use serde_json::json;
 use std::path::Path;
 
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/extension_alias.rs b/crates/oxc_resolver/src/tests/extension_alias.rs
similarity index 97%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/extension_alias.rs
rename to crates/oxc_resolver/src/tests/extension_alias.rs
index 11ccb011b..7b0968fd4 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/extension_alias.rs
+++ b/crates/oxc_resolver/src/tests/extension_alias.rs
@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("extension-alias")
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/extensions.rs b/crates/oxc_resolver/src/tests/extensions.rs
similarity index 97%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/extensions.rs
rename to crates/oxc_resolver/src/tests/extensions.rs
index 77d6c2615..8fa9166f5 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/extensions.rs
+++ b/crates/oxc_resolver/src/tests/extensions.rs
@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("extensions")
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/fallback.rs b/crates/oxc_resolver/src/tests/fallback.rs
similarity index 97%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/fallback.rs
rename to crates/oxc_resolver/src/tests/fallback.rs
index 3f2c9cbae..18c250793 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/fallback.rs
+++ b/crates/oxc_resolver/src/tests/fallback.rs
@@ -2,9 +2,9 @@
 
 use std::path::{Path, PathBuf};
 
-use oxc_resolver::{AliasValue, Resolution, ResolveError, ResolveOptions, ResolverGeneric};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, ResolverGeneric};
 
-use crate::MemoryFS;
+use super::memory_fs::MemoryFS;
 
 #[test]
 #[cfg(not(target_os = "windows"))] // MemoryFS's path separator is always `/` so the test will not pass in windows.
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/imports_field.rs b/crates/oxc_resolver/src/tests/imports_field.rs
similarity index 99%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/imports_field.rs
rename to crates/oxc_resolver/src/tests/imports_field.rs
index 7ea4658b7..d57fac1fa 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/imports_field.rs
+++ b/crates/oxc_resolver/src/tests/imports_field.rs
@@ -4,7 +4,7 @@
 
 use serde_json::json;
 
-use oxc_resolver::{MatchObject, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{MatchObject, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
 use std::path::Path;
 
 #[test]
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/incorrect_description_file.rs b/crates/oxc_resolver/src/tests/incorrect_description_file.rs
similarity index 66%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/incorrect_description_file.rs
rename to crates/oxc_resolver/src/tests/incorrect_description_file.rs
index 62ecd65bd..1be994db2 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/incorrect_description_file.rs
+++ b/crates/oxc_resolver/src/tests/incorrect_description_file.rs
@@ -1,8 +1,8 @@
 //! <https://github.com/webpack/enhanced-resolve/blob/main/test/incorrect-description-file.test.js>
 
-use std::path::PathBuf;
+use std::{env, path::PathBuf};
 
-use oxc_resolver::{JSONError, ResolveError, Resolver};
+use crate::{JSONError, Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("incorrect-package")
@@ -45,3 +45,21 @@ fn incorrect_description_file_3() {
     let resolution = Resolver::default().resolve(f.join("pack2"), ".");
     assert!(resolution.is_err());
 }
+
+// `enhanced_resolve` does not have this test case
+#[test]
+fn no_description_file() {
+    let f = env::current_dir().unwrap().join("tests/enhanced_resolve");
+
+    // has description file
+    let resolver = Resolver::default();
+    assert_eq!(
+        resolver.resolve(&f, ".").map(Resolution::into_path_buf),
+        Ok(f.join("lib/index.js"))
+    );
+
+    // without description file
+    let resolver =
+        Resolver::new(ResolveOptions { description_files: vec![], ..ResolveOptions::default() });
+    assert_eq!(resolver.resolve(&f, "."), Err(ResolveError::NotFound(f.into_boxed_path())));
+}
diff --git a/crates/oxc_resolver/tests/memory_fs.rs b/crates/oxc_resolver/src/tests/memory_fs.rs
similarity index 97%
rename from crates/oxc_resolver/tests/memory_fs.rs
rename to crates/oxc_resolver/src/tests/memory_fs.rs
index eeb924fb5..8d2790f76 100644
--- a/crates/oxc_resolver/tests/memory_fs.rs
+++ b/crates/oxc_resolver/src/tests/memory_fs.rs
@@ -3,7 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use oxc_resolver::{FileMetadata, FileSystem};
+use crate::{FileMetadata, FileSystem};
 
 pub struct MemoryFS {
     fs: vfs::MemoryFS,
diff --git a/crates/oxc_resolver/src/tests/mod.rs b/crates/oxc_resolver/src/tests/mod.rs
new file mode 100644
index 000000000..e8ec0a53f
--- /dev/null
+++ b/crates/oxc_resolver/src/tests/mod.rs
@@ -0,0 +1,37 @@
+mod alias;
+mod browser_field;
+mod exports_field;
+mod extension_alias;
+mod extensions;
+mod fallback;
+mod imports_field;
+mod incorrect_description_file;
+mod memory_fs;
+mod resolve;
+mod roots;
+mod scoped_packages;
+mod simple;
+mod symlink;
+
+use crate::Resolver;
+use std::{env, path::PathBuf, sync::Arc, thread};
+
+pub fn fixture() -> PathBuf {
+    env::current_dir().unwrap().join("tests/enhanced_resolve/test/fixtures")
+}
+
+#[test]
+fn threaded_environment() {
+    let cwd = env::current_dir().unwrap();
+    let resolver = Arc::new(Resolver::default());
+    for _ in 0..2 {
+        _ = thread::spawn({
+            let cwd = cwd.clone();
+            let resolver = Arc::clone(&resolver);
+            move || {
+                _ = resolver.resolve(cwd, ".");
+            }
+        })
+        .join();
+    }
+}
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/resolve.rs b/crates/oxc_resolver/src/tests/resolve.rs
similarity index 98%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/resolve.rs
rename to crates/oxc_resolver/src/tests/resolve.rs
index 74549e9e0..3a0493fcf 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/resolve.rs
+++ b/crates/oxc_resolver/src/tests/resolve.rs
@@ -1,6 +1,6 @@
 //! <https://github.com/webpack/enhanced-resolve/blob/main/test/resolve.test.js>
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 #[test]
 fn resolve() {
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/roots.rs b/crates/oxc_resolver/src/tests/roots.rs
similarity index 96%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/roots.rs
rename to crates/oxc_resolver/src/tests/roots.rs
index 8983fc0a8..5c97d0c81 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/roots.rs
+++ b/crates/oxc_resolver/src/tests/roots.rs
@@ -2,7 +2,7 @@
 
 use std::env;
 
-use oxc_resolver::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver};
 
 #[test]
 fn roots() {
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/scoped_packages.rs b/crates/oxc_resolver/src/tests/scoped_packages.rs
similarity index 94%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/scoped_packages.rs
rename to crates/oxc_resolver/src/tests/scoped_packages.rs
index 62ef6434a..a18d516e6 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/scoped_packages.rs
+++ b/crates/oxc_resolver/src/tests/scoped_packages.rs
@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("scoped")
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/simple.rs b/crates/oxc_resolver/src/tests/simple.rs
similarity index 96%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/simple.rs
rename to crates/oxc_resolver/src/tests/simple.rs
index 105ef737d..4151de079 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/simple.rs
+++ b/crates/oxc_resolver/src/tests/simple.rs
@@ -2,7 +2,7 @@
 
 use std::env;
 
-use oxc_resolver::Resolver;
+use crate::Resolver;
 
 #[test]
 fn simple() {
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/symlink.rs b/crates/oxc_resolver/src/tests/symlink.rs
similarity index 98%
rename from crates/oxc_resolver/tests/enhanced_resolve/test/symlink.rs
rename to crates/oxc_resolver/src/tests/symlink.rs
index 75f531fe1..145f0501b 100644
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/symlink.rs
+++ b/crates/oxc_resolver/src/tests/symlink.rs
@@ -1,6 +1,6 @@
 use std::{env, fs, io, path::Path};
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 #[derive(Debug, Clone, Copy)]
 enum FileType {
diff --git a/crates/oxc_resolver/tests/description_file.rs b/crates/oxc_resolver/tests/description_file.rs
deleted file mode 100644
index 0b425edb0..000000000
--- a/crates/oxc_resolver/tests/description_file.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-//! `enhanced_resolve` does not have any tests for description files,
-//! this is added for completeness.
-
-use std::env;
-
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
-
-#[test]
-fn no_description_file() {
-    let f = env::current_dir().unwrap().join("tests/enhanced_resolve");
-
-    // has description file
-    let resolver = Resolver::default();
-    assert_eq!(
-        resolver.resolve(&f, ".").map(Resolution::into_path_buf),
-        Ok(f.join("lib/index.js"))
-    );
-
-    // without description file
-    let resolver =
-        Resolver::new(ResolveOptions { description_files: vec![], ..ResolveOptions::default() });
-    assert_eq!(resolver.resolve(&f, "."), Err(ResolveError::NotFound(f.into_boxed_path())));
-}
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/mod.rs b/crates/oxc_resolver/tests/enhanced_resolve/mod.rs
deleted file mode 100644
index 585722915..000000000
--- a/crates/oxc_resolver/tests/enhanced_resolve/mod.rs
+++ /dev/null
@@ -1 +0,0 @@
-mod test;
diff --git a/crates/oxc_resolver/tests/enhanced_resolve/test/mod.rs b/crates/oxc_resolver/tests/enhanced_resolve/test/mod.rs
deleted file mode 100644
index f0e2516c6..000000000
--- a/crates/oxc_resolver/tests/enhanced_resolve/test/mod.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-mod alias;
-mod browser_field;
-mod exports_field;
-mod extension_alias;
-mod extensions;
-mod fallback;
-mod imports_field;
-mod incorrect_description_file;
-mod resolve;
-mod roots;
-mod scoped_packages;
-mod simple;
-mod symlink;
-
-use std::{env, path::PathBuf};
-
-pub fn fixture() -> PathBuf {
-    env::current_dir().unwrap().join("tests/enhanced_resolve/test/fixtures")
-}
diff --git a/crates/oxc_resolver/tests/mod.rs b/crates/oxc_resolver/tests/mod.rs
deleted file mode 100644
index 3df6fd24a..000000000
--- a/crates/oxc_resolver/tests/mod.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-mod description_file;
-mod enhanced_resolve;
-mod memory_fs;
-
-use std::{env, sync::Arc, thread};
-
-pub(crate) use memory_fs::MemoryFS;
-use oxc_resolver::Resolver;
-
-#[test]
-fn threaded_environment() {
-    let cwd = env::current_dir().unwrap();
-    let resolver = Arc::new(Resolver::default());
-    for _ in 0..2 {
-        _ = thread::spawn({
-            let cwd = cwd.clone();
-            let resolver = Arc::clone(&resolver);
-            move || {
-                _ = resolver.resolve(cwd, ".");
-            }
-        })
-        .join();
-    }
-}