oeqa: adding selftest-hello and use it to speed up tests

Adding a selftest version of hello world to run it in tests where no download is necessary.
Also using this in several tests to speed them up.
Using the -native version wherever possible will also speed up tests a lot.

[YOCTO #11142]

(From OE-Core rev: c3f26b63934888df0e3cd563c1c2804eb78a368e)

Signed-off-by: Thomas Roos <throos@amazon.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-selftest/recipes-test/selftest-hello/files/helloworld.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(void)
+{
+	printf("Hello world!\n");
+
+	return 0;
+}

meta-selftest/recipes-test/selftest-hello/selftest-hello_1.0.bb

@@ -0,0 +1,19 @@
+DESCRIPTION = "Simple helloworld application -- selftest variant"
+SECTION = "examples"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+SRC_URI = "file://helloworld.c"
+
+S = "${WORKDIR}"
+
+do_compile() {
+	${CC} ${CFLAGS} ${LDFLAGS} helloworld.c -o helloworld
+}
+
+do_install() {
+	install -d ${D}${bindir}
+	install -m 0755 helloworld ${D}${bindir}
+}
+
+BBCLASSEXTEND = "native nativesdk"

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

@@ -41,7 +41,7 @@ class BitbakeTests(OESelftestTestCase):
 
     def test_event_handler(self):
         self.write_config("INHERIT += \"test_events\"")
-        result = bitbake('m4-native')
+        result = bitbake('selftest-hello-native')
         find_build_started = re.search(r"NOTE: Test for bb\.event\.BuildStarted(\n.*)*NOTE: Executing.*Tasks", result.output)
         find_build_completed = re.search(r"Tasks Summary:.*(\n.*)*NOTE: Test for bb\.event\.BuildCompleted", result.output)
         self.assertTrue(find_build_started, msg = "Match failed in:\n%s"  % result.output)
@@ -49,11 +49,11 @@ class BitbakeTests(OESelftestTestCase):
         self.assertNotIn('Test for bb.event.InvalidEvent', result.output)
 
     def test_local_sstate(self):
-        bitbake('m4-native')
-        bitbake('m4-native -cclean')
-        result = bitbake('m4-native')
-        find_setscene = re.search("m4-native.*do_.*_setscene", result.output)
-        self.assertTrue(find_setscene, msg = "No \"m4-native.*do_.*_setscene\" message found during bitbake m4-native. bitbake output: %s" % result.output )
+        bitbake('selftest-hello-native')
+        bitbake('selftest-hello-native -cclean')
+        result = bitbake('selftest-hello-native')
+        find_setscene = re.search("selftest-hello-native.*do_.*_setscene", result.output)
+        self.assertTrue(find_setscene, msg = "No \"selftest-hello-native.*do_.*_setscene\" message found during bitbake selftest-hello-native. bitbake output: %s" % result.output )
 
     def test_bitbake_invalid_recipe(self):
         result = bitbake('-b asdf', ignore_status=True)
@@ -175,7 +175,7 @@ SSTATE_DIR = \"${TOPDIR}/download-selftest\"
         self.assertIn('localconf', result.output)
 
     def test_dry_run(self):
-        result = runCmd('bitbake -n m4-native')
+        result = runCmd('bitbake -n selftest-hello-native')
         self.assertEqual(0, result.status, "bitbake dry run didn't run as expected. %s" % result.output)
 
     def test_just_parse(self):
@@ -233,7 +233,7 @@ INHERIT:remove = \"report-error\"
 
     def test_setscene_only(self):
         """ Bitbake option to restore from sstate only within a build (i.e. execute no real tasks, only setscene)"""
-        test_recipe = 'ed'
+        test_recipe = 'selftest-hello-native'
 
         bitbake(test_recipe)
         bitbake('-c clean %s' % test_recipe)
@@ -246,7 +246,7 @@ INHERIT:remove = \"report-error\"
                                              'Executed tasks were: %s' % (task, str(tasks)))
 
     def test_skip_setscene(self):
-        test_recipe = 'ed'
+        test_recipe = 'selftest-hello-native'
 
         bitbake(test_recipe)
         bitbake('-c clean %s' % test_recipe)