oe-selftest: add tests for C and C++ build tools

Add new file for C and C++ build tools. The initial implemmentation
contains a class for CMake and one for Meson. At least these first
tests for the qemu-usermode share most of the code. That's why there
is only one c_ccp.py file and not for example a cmake.py and a
meson.py file.

(From OE-Core rev: 41390f5202a6ee7472cb82d12c7c32f89d6e52ff)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/c_cpp.py

@@ -0,0 +1,60 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+from oeqa.selftest.case import OESelftestTestCase
+from oeqa.core.decorator.data import skipIfNotQemuUsermode
+from oeqa.utils.commands import bitbake
+
+
+class CCppTests(OESelftestTestCase):
+
+    @skipIfNotQemuUsermode()
+    def _qemu_usermode(self, recipe_name):
+        self.add_command_to_tearDown("bitbake -c clean %s" % recipe_name)
+        bitbake("%s -c run_tests" % recipe_name)
+
+    @skipIfNotQemuUsermode()
+    def _qemu_usermode_failing(self, recipe_name):
+        config = 'PACKAGECONFIG:pn-%s = "failing_test"' % recipe_name
+        self.write_config(config)
+        self.add_command_to_tearDown("bitbake -c clean %s" % recipe_name)
+        result = bitbake("%s -c run_tests" % recipe_name, ignore_status=True)
+        self.assertNotEqual(0, result.status, "command: %s is expected to fail but passed, status: %s, output: %s, error: %s" % (
+            result.command, result.status, result.output, result.error))
+
+
+class CMakeTests(CCppTests):
+    def test_cmake_qemu(self):
+        """Test for cmake-qemu.bbclass good case
+
+        compile the cmake-example and verify the CTests pass in qemu-user.
+        qemu-user is configured by CMAKE_CROSSCOMPILING_EMULATOR.
+        """
+        self._qemu_usermode("cmake-example")
+
+    def test_cmake_qemu_failing(self):
+        """Test for cmake-qemu.bbclass bad case
+
+        Break the comparison in the test code and verify the CTests do not pass.
+        """
+        self._qemu_usermode_failing("cmake-example")
+
+
+class MesonTests(CCppTests):
+    def test_meson_qemu(self):
+        """Test the qemu-user feature of the meson.bbclass good case
+
+        compile the meson-example and verify the Unit Test pass in qemu-user.
+        qemu-user is configured by meson's exe_wrapper option.
+        """
+        self._qemu_usermode("meson-example")
+
+    def test_meson_qemu_failing(self):
+        """Test the qemu-user feature of the meson.bbclass bad case
+
+        Break the comparison in the test code and verify the Unit Test does not pass in qemu-user.
+        """
+        self._qemu_usermode_failing("meson-example")