[T] Test for constructFormattedFileName().

Tests/BaseLib/TestConstructFormattedFileName.cpp

+/**
+ * \file
+ * \copyright
+ * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ */
+
+#include <algorithm>
+#include <array>
+#include <cstring>
+#include <functional>
+#include <limits>
+#include <random>
+#include <string>
+
+#include <gtest/gtest.h>
+
+#include "BaseLib/FileTools.h"
+
+TEST(BaseLib, constructFormattedFileName)
+{
+    auto const formatted_filename =
+        BaseLib::constructFormattedFileName("test_{:timestep}", 0, 2, 0.2);
+    ASSERT_EQ("test_2", formatted_filename);
+
+    auto const formatted_filename_time =
+        BaseLib::constructFormattedFileName("test_{:0.5time}", 0, 2, 0.2);
+    ASSERT_EQ("test_0.20000", formatted_filename_time);
+    auto const formatted_filename_timestep_time =
+        BaseLib::constructFormattedFileName("test_{:timestep}_{:0.5time}", 0, 2,
+                                            0.2);
+    ASSERT_EQ("test_2_0.20000", formatted_filename_timestep_time);
+    auto const formatted_filename_time_timestep =
+        BaseLib::constructFormattedFileName("test_{:.4time}_{:timestep}", 0, 2,
+                                            0.2);
+    ASSERT_EQ("test_0.2000_2", formatted_filename_time_timestep);
+
+    {
+        auto const formatted_filename = BaseLib::constructFormattedFileName(
+            "test_{:.4time}_{:timestep}_{:process_id}", 0, 2, 0.2);
+        ASSERT_EQ("test_0.2000_2_0", formatted_filename);
+    }
+    {
+        auto const formatted_filename = BaseLib::constructFormattedFileName(
+            "pcs_{:process_id}_ts_{:timestep}_t_{:.4time}", 0, 2, 0.2);
+        ASSERT_EQ("pcs_0_ts_2_t_0.2000", formatted_filename);
+    }
+}