Added unit test

unit_tests/graphRegex/Test_examples.cpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#include <catch2/catch_test_macros.hpp>
+#include <set>
+
+#include "aidge/data/Tensor.hpp"
+#include "aidge/graph/GraphView.hpp"
+#include "aidge/graph/OpArgs.hpp"
+#include "aidge/operator/ReLU.hpp"
+#include "aidge/operator/MetaOperatorDefs.hpp"
+#include "aidge/operator/Producer.hpp"
+#include "aidge/graphRegex/GraphRegex.hpp"
+#include "aidge/recipes/Recipes.hpp"
+
+namespace Aidge {
+
+
+TEST_CASE("Examples", "[GraphMatching]") {
+    auto g1 = Sequential({
+        Producer({16, 3, 512, 512}, "dataProvider"),
+        Conv(3, 4, {5, 5}, "conv1"),
+        ReLU(),
+        PaddedConv(4, 8, {5, 5}, "conv2", {1, 1}, {2, 2, 2, 2}),
+        ReLU(),
+        PaddedConv(8, 16, {5, 5}, "conv3", {1, 1}, {2, 2, 2, 2}),
+        ReLU()
+    });
+
+    expandMetaOps(g1);
+    g1->save("Test_examples");
+
+    auto regex = std::make_shared<GraphRegex>();
+    regex->setKeyFromGraph(g1);
+    regex->addQuery("Pad->Conv->ReLU");
+    // Won't work, wrong number of matches:
+    //regex->addQuery("Pad*->Conv->ReLU*");
+
+    const auto match = regex->match(g1);
+    REQUIRE(match.size() == 2);
+
+    for (const auto& solution : match) {
+        REQUIRE(solution->getAll().size() == 3);
+    }
+}
+
+}  // namespace Aidge
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