proj.h: add PROJ_COMPUTE_VERSION, PROJ_VERSION_NUMBER, PROJ_AT_LEAST_VERSION macros

Makes it easier for users to test if they build against a PROJ version
later than a given x.y.z version.

1 files changed, 48 insertions, 0 deletions

diff --git a/test/unit/test_misc.cpp b/test/unit/test_misc.cpp
new file mode 100644
index 00000000..aaf13629
--- /dev/null
+++ b/test/unit/test_misc.cpp
@@ -0,0 +1,48 @@
+/******************************************************************************
+ *
+ * Project:  PROJ
+ * Purpose:  Test
+ * Author:   Even Rouault <even dot rouault at spatialys dot com>
+ *
+ ******************************************************************************
+ * Copyright (c) 2021, Even Rouault <even dot rouault at spatialys dot com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ ****************************************************************************/
+
+#include "gtest_include.h"
+
+#include "proj.h"
+
+namespace {
+
+TEST(misc, version) {
+    EXPECT_EQ(PROJ_COMPUTE_VERSION(2200, 98, 76), 22009876);
+    EXPECT_EQ(PROJ_VERSION_NUMBER, PROJ_VERSION_MAJOR * 10000 +
+                                       PROJ_VERSION_MINOR * 100 +
+                                       PROJ_VERSION_PATCH);
+    EXPECT_TRUE(PROJ_AT_LEAST_VERSION(PROJ_VERSION_MAJOR, PROJ_VERSION_MINOR,
+                                      PROJ_VERSION_PATCH));
+    EXPECT_TRUE(PROJ_AT_LEAST_VERSION(PROJ_VERSION_MAJOR - 1,
+                                      PROJ_VERSION_MINOR, PROJ_VERSION_PATCH));
+    EXPECT_FALSE(PROJ_AT_LEAST_VERSION(PROJ_VERSION_MAJOR, PROJ_VERSION_MINOR,
+                                       PROJ_VERSION_PATCH + 1));
+}
+
+} // namespace