Feature: Allow re-use of run_test() in install_time_test_callbacks (#26594)

Allow re-use of run_test() in install_time_test_callbacks

Co-authored-by: Greg Becker <becker33@llnl.gov>

var/spack/repos/builtin.mock/packages/test-build-callbacks/package.py

@@ -0,0 +1,31 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+from spack.package import run_after
+
+
+class TestBuildCallbacks(Package):
+    """This package illustrates build callback test failure."""
+
+    homepage = "http://www.example.com/test-build-callbacks"
+    url      = "http://www.test-failure.test/test-build-callbacks-1.0.tar.gz"
+
+    version('1.0', '0123456789abcdef0123456789abcdef')
+
+    phases = ['build', 'install']
+    # set to undefined method
+    build_time_test_callbacks = ['undefined-build-test']
+    run_after('build')(Package._run_default_build_time_test_callbacks)
+
+    def build(self, spec, prefix):
+        pass
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+
+    def test(self):
+        print('test: running test-build-callbacks')
+        print('PASSED')

var/spack/repos/builtin.mock/packages/test-install-callbacks/package.py

@@ -0,0 +1,27 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+from spack.package import run_after
+
+
+class TestInstallCallbacks(Package):
+    """This package illustrates install callback test failure."""
+
+    homepage = "http://www.example.com/test-install-callbacks"
+    url      = "http://www.test-failure.test/test-install-callbacks-1.0.tar.gz"
+
+    version('1.0', '0123456789abcdef0123456789abcdef')
+
+    # Include an undefined callback method
+    install_time_test_callbacks = ['undefined-install-test', 'test']
+    run_after('install')(Package._run_default_install_time_test_callbacks)
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+
+    def test(self):
+        print('test: test-install-callbacks')
+        print('PASSED')