Provide version major/minor/patch macros (#2014)

CHANGELOG.md

@@ -33,6 +33,8 @@ Increment the:
 * Fix Prometheus server crash on listening to already used port [#1986](https://github.com/open-telemetry/opentelemetry-cpp/pull/1986)
 * [EXPORTER] Boolean environment variables not parsed per the spec
   [#1982](https://github.com/open-telemetry/opentelemetry-cpp/pull/1982)
+* Provide version major/minor/patch macros
+  [#2014](https://github.com/open-telemetry/opentelemetry-cpp/pull/2014)
 
 ## [1.8.2] 2023-01-31
 

api/include/opentelemetry/version.h

@@ -8,6 +8,10 @@
 
 #define OPENTELEMETRY_ABI_VERSION_NO 1
 #define OPENTELEMETRY_VERSION "1.8.2"
+#define OPENTELEMETRY_VERSION_MAJOR 1
+#define OPENTELEMETRY_VERSION_MINOR 8
+#define OPENTELEMETRY_VERSION_PATCH 2
+
 #define OPENTELEMETRY_ABI_VERSION OPENTELEMETRY_STRINGIFY(OPENTELEMETRY_ABI_VERSION_NO)
 
 // clang-format off

api/test/core/BUILD

@@ -15,3 +15,18 @@ cc_test(
         "@com_google_googletest//:gtest_main",
     ],
 )
+
+cc_test(
+    name = "version_test",
+    srcs = [
+        "version_test.cc",
+    ],
+    tags = [
+        "api",
+        "test",
+    ],
+    deps = [
+        "//api",
+        "@com_google_googletest//:gtest_main",
+    ],
+)

api/test/core/CMakeLists.txt

@@ -10,3 +10,11 @@ gtest_add_tests(
   TARGET timestamp_test
   TEST_PREFIX trace.
   TEST_LIST timestamp_test)
+
+add_executable(version_test version_test.cc)
+target_link_libraries(version_test ${GTEST_BOTH_LIBRARIES}
+                      ${CMAKE_THREAD_LIBS_INIT} opentelemetry_api)
+gtest_add_tests(
+  TARGET version_test
+  TEST_PREFIX version.
+  TEST_LIST version_test)

api/test/core/version_test.cc

@@ -0,0 +1,16 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#include "opentelemetry/version.h"
+
+#include <gtest/gtest.h>
+
+TEST(VersionTest, Consistency)
+{
+  char expected[10];
+  snprintf(expected, sizeof(expected), "%d.%d.%d", OPENTELEMETRY_VERSION_MAJOR,
+           OPENTELEMETRY_VERSION_MINOR, OPENTELEMETRY_VERSION_PATCH);
+
+  std::string actual = OPENTELEMETRY_VERSION;
+  EXPECT_EQ(actual, expected);
+}