[OE-core][PATCHv2 1/2] classes/ptest-python-pytest: add a new class to consolidate pytest ptest functionality

[Derek Straka <derek@asterius.io>]

A large number of python packages leverage the pytest unit test
framework for their ptest functionality.  Currently, many of the tests
have duplicate code for:
    1. Installing pytest files
    2. Declaring ptest dependencies
    3. Script for executing tests (run-ptes)

To simplify adding common pytest based ptests, added a new class
enabling base functionality.  Users can also override the location of
the pytest files in addition to using their own version of run-ptest

Signed-off-by: Derek Straka <derek@asterius.io>
---
 .../ptest-python-pytest.bbclass               | 42 +++++++++++++++++++
 meta/files/ptest-python-pytest/run-ptest      |  3 ++
 2 files changed, 45 insertions(+)
 create mode 100644 meta/classes-recipe/ptest-python-pytest.bbclass
 create mode 100755 meta/files/ptest-python-pytest/run-ptest

diff --git a/meta/classes-recipe/ptest-python-pytest.bbclass b/meta/classes-recipe/ptest-python-pytest.bbclass
new file mode 100644
index 0000000000..89ff10c335
--- /dev/null
+++ b/meta/classes-recipe/ptest-python-pytest.bbclass
@@ -0,0 +1,42 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+inherit ptest
+
+FILESEXTRAPATHS:prepend := "${COREBASE}/meta/files:"
+
+SRC_URI += "file://ptest-python-pytest/run-ptest"
+
+# Overridable configuration for the directory within the source tree
+# containing the pytest files
+PTEST_PYTEST_DIR ?= "/tests"
+
+do_install_ptest_python_pytest() {
+	if [ ! -f ${D}${PTEST_PATH}/run-ptest ]; then
+		install -m 0755 ${UNPACKDIR}/ptest-python-pytest/run-ptest ${D}${PTEST_PATH}
+	fi
+    if [ -d "${S}/${PTEST_PYTEST_DIR}" ]; then
+        install -d ${D}${PTEST_PATH}/${PTEST_PYTEST_DIR}
+        cp -rf ${S}/${PTEST_PYTEST_DIR}/* ${D}${PTEST_PATH}/${PTEST_PYTEST_DIR}/
+    fi
+}
+
+FILES:${PN}-ptest:prepend = "${PTEST_PATH}/tests/* ${PTEST_PATH}/run-ptest "
+
+RDEPENDS:${PN}-ptest:prepend = "python3-pytest python3-unittest-automake-output"
+
+addtask install_ptest_python_pytest after do_install_ptest_base before do_package
+
+python () {
+    if not bb.data.inherits_class('native', d) and not bb.data.inherits_class('cross', d):
+        d.setVarFlag('do_install_ptest_python_pytest', 'fakeroot', '1')
+        d.setVarFlag('do_install_ptest_python_pytest', 'umask', '022')
+
+    # Remove all '*ptest_python_pytest' tasks when ptest is not enabled
+    if not(d.getVar('PTEST_ENABLED') == "1"):
+        for i in ['do_install_ptest_python_pytest']:
+            bb.build.deltask(i, d)
+}
diff --git a/meta/files/ptest-python-pytest/run-ptest b/meta/files/ptest-python-pytest/run-ptest
new file mode 100755
index 0000000000..8d2017d39c
--- /dev/null
+++ b/meta/files/ptest-python-pytest/run-ptest
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+pytest --automake
-- 
2.34.1