Separate out the unit test for the degenerate case

* This is a trivial disturbance to the test to correct a spurious kcov error; see SimonKagstrom/kcov#339 * Closes RobotLocomotion#14424
ggould-tri · Dec 8, 2020 · ef96847 · ef96847
1 parent cbd9b58
commit ef96847
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/math/test/gray_code_test.cc b/math/test/gray_code_test.cc
@@ -7,6 +7,13 @@
 namespace drake {
 namespace math {
 namespace {
+
+GTEST_TEST(TestGrayCode, TestDegenerateCase) {
+  auto zero_code = CalculateReflectedGrayCodes(0);
+  EXPECT_EQ(zero_code.cols(), 0);
+  EXPECT_EQ(zero_code.rows(), 0);
+}
+
 GTEST_TEST(TestGrayCode, TestCalculateGrayCodes) {
   for (int i = 0; i < 4; i++) {
     auto test_code = CalculateReflectedGrayCodes(i);