compare result to reference with tolerance 1e-17

- fixes test on Euler

cppptest/src/include/ae108/cppptest/Matchers.h

@@ -98,6 +98,32 @@ MATCHER_P3(ScalarEqIfLocal, row, col, reference,
          almost_equal_to_reference(arg(row, col), reference, result_listener);
 }
 
+/**
+ * @brief Check that the value at index row is almost equal to reference (if it
+ * is available locally).
+ */
+MATCHER_P3(ScalarNearIfLocal, row, reference, tolerance,
+           std::string(negation ? "not " : "") + "equal to " +
+               ::testing::PrintToString(reference) + " at (" +
+               ::testing::PrintToString(row) + ")") {
+  return !isLocal(arg, row) ||
+         near_to_reference(arg(row), reference, tolerance, result_listener);
+}
+
+/**
+ * @brief Check that the value at index (row, col) is almost equal to reference
+ * (if it is available locally).
+ */
+MATCHER_P4(ScalarNearIfLocal, row, col, reference, tolerance,
+           std::string(negation ? "not " : "") + "equal to " +
+               ::testing::PrintToString(reference) + " at (" +
+               ::testing::PrintToString(row) + ", " +
+               ::testing::PrintToString(col) + ")") {
+  return !isLocal(arg, row) ||
+         near_to_reference(arg(row, col), reference, tolerance, result_listener);
+}
+
+
 /**
  * @brief Check that the value has the given address.
  */
@@ -136,4 +162,4 @@ MATCHER_P2(ScalarNear, reference, tolerance,
 }
 } // namespace
 } // namespace cppptest
-} // namespace ae108
\ No newline at end of file
+} // namespace ae108

solve/test/boundaryConditionsToEquations_Test.cc

@@ -22,6 +22,7 @@
 #include <array>
 #include <gmock/gmock.h>
 
+using ae108::cppptest::ScalarNearIfLocal;
 using ae108::cppptest::ScalarEqIfLocal;
 using testing::DoubleEq;
 using testing::Eq;
@@ -176,10 +177,10 @@ TYPED_TEST(boundaryConditionsToEquations_Test,
   const auto image = apply(result, displacements);
 
   for (auto row = size_type{0}; row < image.unwrap().size(); ++row) {
-    EXPECT_THAT(image.unwrap(), ScalarEqIfLocal(row, 0.));
+    EXPECT_THAT(image.unwrap(), ScalarNearIfLocal(row, 0., 1e-17));
   }
 }
 
 } // namespace
 } // namespace solve
-} // namespace ae108
\ No newline at end of file
+} // namespace ae108