diff --git a/packages/astro/test/dev-routing.test.js b/packages/astro/test/dev-routing.test.js
index ce71a5d59e10..4feef55833da 100644
--- a/packages/astro/test/dev-routing.test.js
+++ b/packages/astro/test/dev-routing.test.js
@@ -22,6 +22,16 @@ describe('Development Routing', () => {
 			expect(response.status).to.equal(200);
 		});
 
+		it('200 when loading non-UTF-8 file name', async () => {
+			const response = await fixture.fetch('/テスト');
+			expect(response.status).to.equal(200);
+		});
+
+		it('200 when loading include space file name', async () => {
+			const response = await fixture.fetch('/te st');
+			expect(response.status).to.equal(200);
+		});
+
 		it('200 when adding search params', async () => {
 			const response = await fixture.fetch('/?foo=bar');
 			expect(response.status).to.equal(200);
@@ -315,6 +325,26 @@ describe('Development Routing', () => {
 			expect(response.status).to.equal(200);
 		});
 
+		it('200 when loading /テスト.html', async () => {
+			const response = await fixture.fetch('/テスト.html');
+			expect(response.status).to.equal(200);
+		});
+
+		it('200 when loading /テスト', async () => {
+			const response = await fixture.fetch('/テスト');
+			expect(response.status).to.equal(200);
+		});
+
+		it('200 when loading /te st.html', async () => {
+			const response = await fixture.fetch('/te st.html');
+			expect(response.status).to.equal(200);
+		});
+
+		it('200 when loading /te st', async () => {
+			const response = await fixture.fetch('/te st');
+			expect(response.status).to.equal(200);
+		});
+
 		it('200 when loading /another.html', async () => {
 			const response = await fixture.fetch('/another.html');
 			expect(response.status).to.equal(200);
diff --git a/packages/astro/test/fixtures/without-site-config/src/pages/te st.astro b/packages/astro/test/fixtures/without-site-config/src/pages/te st.astro
new file mode 100644
index 000000000000..42e6a5177169
--- /dev/null
+++ b/packages/astro/test/fixtures/without-site-config/src/pages/te st.astro	
@@ -0,0 +1 @@
+<div>testing</div>
\ No newline at end of file
diff --git "a/packages/astro/test/fixtures/without-site-config/src/pages/\343\203\206\343\202\271\343\203\210.astro" "b/packages/astro/test/fixtures/without-site-config/src/pages/\343\203\206\343\202\271\343\203\210.astro"
new file mode 100644
index 000000000000..42e6a5177169
--- /dev/null
+++ "b/packages/astro/test/fixtures/without-site-config/src/pages/\343\203\206\343\202\271\343\203\210.astro"
@@ -0,0 +1 @@
+<div>testing</div>
\ No newline at end of file