diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index aab90eee86..5baeea81c8 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -140,6 +140,7 @@ quick_lint_js_add_executable(
   test-parse-expression-typescript.cpp
   test-parse-expression.cpp
   test-parse-function.cpp
+  test-parse-jsx-react.cpp
   test-parse-jsx.cpp
   test-parse-loop.cpp
   test-parse-module.cpp
diff --git a/test/test-parse-jsx-react.cpp b/test/test-parse-jsx-react.cpp
new file mode 100644
index 0000000000..0ca0cbc968
--- /dev/null
+++ b/test/test-parse-jsx-react.cpp
@@ -0,0 +1,112 @@
+// Copyright (C) 2020  Matthew "strager" Glazar
+// See end of file for extended copyright information.
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <quick-lint-js/diag-matcher.h>
+#include <quick-lint-js/parse-support.h>
+#include <quick-lint-js/port/char8.h>
+#include <string_view>
+
+namespace quick_lint_js {
+namespace {
+class Test_Parse_JSX_React : public Test_Parse_Expression {};
+
+TEST_F(Test_Parse_JSX_React, correctly_capitalized_attribute) {
+  test_parse_and_visit_module(u8R"(c = <td colSpan="2" />;)"_sv, no_diags,
+                              jsx_options);
+
+  test_parse_and_visit_module(u8R"(c = <div onClick={handler} />;)"_sv,
+                              no_diags, jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, event_attributes_should_be_camel_case) {
+  test_parse_and_visit_module(
+      u8"c = <div onclick={handler} />;"_sv,  //
+      u8"         ^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
+      u8"{.expected_attribute_name=onClick}"_diag,  //
+      jsx_options);
+
+  // TODO(strager): Should we also report that the handler's value is missing?
+  test_parse_and_visit_module(
+      u8"c = <div onclick />;"_sv,  //
+      u8"         ^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
+      u8"{.expected_attribute_name=onClick}"_diag,  //
+      jsx_options);
+
+  test_parse_and_visit_module(
+      u8"c = <div onmouseenter={handler} />;"_sv,  //
+      u8"         ^^^^^^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
+      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
+      jsx_options);
+
+  test_parse_and_visit_module(
+      u8"c = <div oncustomevent={handler} />;"_sv,  //
+      u8"         ^^^^^^^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
+      u8"{.expected_attribute_name=onCustomevent}"_diag,  //
+      jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, miscapitalized_attribute) {
+  test_parse_and_visit_module(
+      u8"c = <td colspan=\"2\" />;"_sv,  //
+      u8"        ^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
+      u8"{.expected_attribute_name=colSpan}"_diag,  //
+      jsx_options);
+
+  test_parse_and_visit_module(
+      u8"c = <div onMouseenter={handler} />;"_sv,  //
+      u8"         ^^^^^^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
+      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
+      jsx_options);
+
+  test_parse_and_visit_module(
+      u8"c = <div onmouseENTER={handler} />;"_sv,  //
+      u8"         ^^^^^^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
+      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
+      jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, commonly_misspelled_attribute) {
+  test_parse_and_visit_module(
+      u8"c = <span class=\"item\"></span>;"_sv,  //
+      u8"          ^^^^^ Diag_JSX_Attribute_Renamed_By_React.attribute_name"_diag
+      u8"{.react_attribute_name=className}"_diag,  //
+      jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, attribute_checking_ignores_namespaced_attributes) {
+  test_parse_and_visit_module(u8R"(c = <div ns:onmouseenter={handler} />;)"_sv,
+                              no_diags, jsx_options);
+  test_parse_and_visit_module(
+      u8R"(c = <div onmouseenter:onmouseenter={handler} />;)"_sv, no_diags,
+      jsx_options);
+  test_parse_and_visit_module(u8R"(c = <div class:class="my-css-class" />;)"_sv,
+                              no_diags, jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, attribute_checking_ignores_namespaced_elements) {
+  test_parse_and_visit_module(u8R"(c = <svg:g onmouseenter={handler} />;)"_sv,
+                              no_diags, jsx_options);
+  test_parse_and_visit_module(u8R"(c = <svg:g class="red" />;)"_sv, no_diags,
+                              jsx_options);
+}
+
+TEST_F(Test_Parse_JSX_React, attribute_checking_ignores_user_components) {
+  test_parse_and_visit_module(
+      u8R"(c = <MyComponent onmouseenter={handler} />;)"_sv, no_diags,
+      jsx_options);
+
+  test_parse_and_visit_module(u8R"(c = <MyComponent class="red" />;)"_sv,
+                              no_diags, jsx_options);
+
+  test_parse_and_visit_module(
+      u8R"(c = <mymodule.mycomponent onmouseenter={handler} />;)"_sv, no_diags,
+      jsx_options);
+
+  test_parse_and_visit_module(
+      u8R"(c = <mymodule.mycomponent class="red" />;)"_sv, no_diags,
+      jsx_options);
+}
+}
+}
diff --git a/test/test-parse-jsx.cpp b/test/test-parse-jsx.cpp
index 04937820ff..41d2b6189a 100644
--- a/test/test-parse-jsx.cpp
+++ b/test/test-parse-jsx.cpp
@@ -448,103 +448,6 @@ TEST_F(Test_Parse_JSX, adjacent_tags_without_outer_fragment) {
   }
 }
 
-TEST_F(Test_Parse_JSX, correctly_capitalized_attribute) {
-  test_parse_and_visit_module(u8R"(c = <td colSpan="2" />;)"_sv, no_diags,
-                              jsx_options);
-
-  test_parse_and_visit_module(u8R"(c = <div onClick={handler} />;)"_sv,
-                              no_diags, jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, event_attributes_should_be_camel_case) {
-  test_parse_and_visit_module(
-      u8"c = <div onclick={handler} />;"_sv,  //
-      u8"         ^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
-      u8"{.expected_attribute_name=onClick}"_diag,  //
-      jsx_options);
-
-  // TODO(strager): Should we also report that the handler's value is missing?
-  test_parse_and_visit_module(
-      u8"c = <div onclick />;"_sv,  //
-      u8"         ^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
-      u8"{.expected_attribute_name=onClick}"_diag,  //
-      jsx_options);
-
-  test_parse_and_visit_module(
-      u8"c = <div onmouseenter={handler} />;"_sv,  //
-      u8"         ^^^^^^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
-      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
-      jsx_options);
-
-  test_parse_and_visit_module(
-      u8"c = <div oncustomevent={handler} />;"_sv,  //
-      u8"         ^^^^^^^^^^^^^ Diag_JSX_Event_Attribute_Should_Be_Camel_Case.attribute_name"_diag
-      u8"{.expected_attribute_name=onCustomevent}"_diag,  //
-      jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, miscapitalized_attribute) {
-  test_parse_and_visit_module(
-      u8"c = <td colspan=\"2\" />;"_sv,  //
-      u8"        ^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
-      u8"{.expected_attribute_name=colSpan}"_diag,  //
-      jsx_options);
-
-  test_parse_and_visit_module(
-      u8"c = <div onMouseenter={handler} />;"_sv,  //
-      u8"         ^^^^^^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
-      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
-      jsx_options);
-
-  test_parse_and_visit_module(
-      u8"c = <div onmouseENTER={handler} />;"_sv,  //
-      u8"         ^^^^^^^^^^^^ Diag_JSX_Attribute_Has_Wrong_Capitalization.attribute_name"_diag
-      u8"{.expected_attribute_name=onMouseEnter}"_diag,  //
-      jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, commonly_misspelled_attribute) {
-  test_parse_and_visit_module(
-      u8"c = <span class=\"item\"></span>;"_sv,  //
-      u8"          ^^^^^ Diag_JSX_Attribute_Renamed_By_React.attribute_name"_diag
-      u8"{.react_attribute_name=className}"_diag,  //
-      jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, attribute_checking_ignores_namespaced_attributes) {
-  test_parse_and_visit_module(u8R"(c = <div ns:onmouseenter={handler} />;)"_sv,
-                              no_diags, jsx_options);
-  test_parse_and_visit_module(
-      u8R"(c = <div onmouseenter:onmouseenter={handler} />;)"_sv, no_diags,
-      jsx_options);
-  test_parse_and_visit_module(u8R"(c = <div class:class="my-css-class" />;)"_sv,
-                              no_diags, jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, attribute_checking_ignores_namespaced_elements) {
-  test_parse_and_visit_module(u8R"(c = <svg:g onmouseenter={handler} />;)"_sv,
-                              no_diags, jsx_options);
-  test_parse_and_visit_module(u8R"(c = <svg:g class="red" />;)"_sv, no_diags,
-                              jsx_options);
-}
-
-TEST_F(Test_Parse_JSX, attribute_checking_ignores_user_components) {
-  test_parse_and_visit_module(
-      u8R"(c = <MyComponent onmouseenter={handler} />;)"_sv, no_diags,
-      jsx_options);
-
-  test_parse_and_visit_module(u8R"(c = <MyComponent class="red" />;)"_sv,
-                              no_diags, jsx_options);
-
-  test_parse_and_visit_module(
-      u8R"(c = <mymodule.mycomponent onmouseenter={handler} />;)"_sv, no_diags,
-      jsx_options);
-
-  test_parse_and_visit_module(
-      u8R"(c = <mymodule.mycomponent class="red" />;)"_sv, no_diags,
-      jsx_options);
-}
-
 TEST_F(Test_Parse_JSX, prop_needs_an_expression) {
   test_parse_and_visit_module(
       u8"c = <MyComponent custom={}></MyComponent>;"_sv,  //