diff --git a/.ci/compute_projects_test.py b/.ci/compute_projects_test.py
index 11c4aea9b4e3..bd761198300a 100644
--- a/.ci/compute_projects_test.py
+++ b/.ci/compute_projects_test.py
@@ -284,6 +284,34 @@ class TestComputeProjects(unittest.TestCase):
             "check-cxx check-cxxabi check-unwind",
         )
 
+    def test_windows_ci(self):
+        env_variables = compute_projects.get_env_variables(
+            [".ci/compute_projects.py"], "Windows"
+        )
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "clang;clang-tools-extra;libclc;lld;llvm;mlir;polly",
+        )
+        self.assertEqual(
+            env_variables["project_check_targets"],
+            "check-clang check-clang-cir check-clang-tools check-lld check-llvm check-mlir check-polly",
+        )
+        self.assertEqual(
+            env_variables["runtimes_to_build"],
+            "libcxx;libcxxabi;libunwind",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets"],
+            "",
+        )
+        # TODO(boomanaiden154): We should not be emitting these on Windows.
+        # It does not currently impact anything because we do not build the
+        # runtimes on Windows though.
+        self.assertEqual(
+            env_variables["runtimes_check_targets_needs_reconfig"],
+            "check-cxx check-cxxabi check-unwind",
+        )
+
     def test_lldb(self):
         env_variables = compute_projects.get_env_variables(
             ["lldb/CMakeLists.txt"], "Linux"