diff --git a/packages/npm-packages/ruby-wasm-wasi/test/test_unit.rb b/packages/npm-packages/ruby-wasm-wasi/test/test_unit.rb
index e04b07f434..f75898c087 100644
--- a/packages/npm-packages/ruby-wasm-wasi/test/test_unit.rb
+++ b/packages/npm-packages/ruby-wasm-wasi/test/test_unit.rb
@@ -8,3 +8,4 @@
 require_relative "./unit/test_array"
 require_relative "./unit/test_hash"
 require_relative "./unit/test_nil_class"
+require_relative "./unit/require_remote/url_resolver"
diff --git a/packages/npm-packages/ruby-wasm-wasi/test/unit/require_remote/url_resolver.rb b/packages/npm-packages/ruby-wasm-wasi/test/unit/require_remote/url_resolver.rb
new file mode 100644
index 0000000000..8ed274161b
--- /dev/null
+++ b/packages/npm-packages/ruby-wasm-wasi/test/unit/require_remote/url_resolver.rb
@@ -0,0 +1,66 @@
+require "test-unit"
+require "js"
+require "js/require_remote"
+
+class TestURLResolver < Test::Unit::TestCase
+  def test_get_location
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com")
+    script_location = url_resolver.get_location("foo.rb")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_relative_path
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com")
+    script_location = url_resolver.get_location("./foo.rb")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "./foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_relative_path_and_filename
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com/bar.rb")
+    script_location = url_resolver.get_location("./foo.rb")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "./foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_relative_path_and_filename_without_extension
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com/bar")
+    script_location = url_resolver.get_location("./foo")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "./foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_relative_path_and_directory
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com/bar/")
+    script_location = url_resolver.get_location("./foo.rb")
+    assert_equal "https://example.com/bar/foo.rb", script_location.url.to_s
+    assert_equal "./foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_backward_relative_path
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com/bar/")
+    script_location = url_resolver.get_location("../foo.rb")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "../foo.rb", script_location.filename
+  end
+
+  def test_get_location_with_backward_relative_path_and_filename
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com/baz.rb")
+    script_location = url_resolver.get_location("../foo.rb")
+    assert_equal "https://example.com/foo.rb", script_location.url.to_s
+    assert_equal "../foo.rb", script_location.filename
+  end
+
+  def test_push_and_pop
+    url_resolver = JS::RequireRemote::URLResolver.new("https://example.com")
+    url_resolver.push("https://example.com/foo/bar.rb")
+    script_location = url_resolver.get_location("./baz.rb")
+    assert_equal "https://example.com/foo/baz.rb", script_location.url.to_s
+    assert_equal "./baz.rb", script_location.filename
+    url_resolver.pop
+    script_location = url_resolver.get_location("./baz.rb")
+    assert_equal "https://example.com/baz.rb", script_location.url.to_s
+    assert_equal "./baz.rb", script_location.filename
+  end
+end