From: Brendan Higgins <brendanhiggins@google.com>
To: gregkh@linuxfoundation.org, keescook@google.com,
mcgrof@kernel.org, shuah@kernel.org
Cc: joel@jms.id.au, mpe@ellerman.id.au, joe@perches.com,
brakmo@fb.com, rostedt@goodmis.org, Tim.Bird@sony.com,
khilman@baylibre.com, julia.lawall@lip6.fr,
linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com,
linux-kernel@vger.kernel.org, jdike@addtoit.com, richard@nod.at,
linux-um@lists.infradead.org,
Brendan Higgins <brendanhiggins@google.com>
Subject: [RFC v1 25/31] kunit: added concept of platform mocking
Date: Tue, 16 Oct 2018 16:51:14 -0700 [thread overview]
Message-ID: <20181016235120.138227-26-brendanhiggins@google.com> (raw)
In-Reply-To: <20181016235120.138227-1-brendanhiggins@google.com>
Platform mocking is the mocking of all platform specific functions that
interact directly with hardware. In effect, this provides the ability to
mock any hardware behavior.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
---
drivers/base/Makefile | 1 +
drivers/base/platform-mock.c | 65 ++++++++++++++++++++++++++++
include/linux/platform_device_mock.h | 64 +++++++++++++++++++++++++++
3 files changed, 130 insertions(+)
create mode 100644 drivers/base/platform-mock.c
create mode 100644 include/linux/platform_device_mock.h
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 704f442958103..77cc599daa020 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_PINCTRL) += pinctrl.o
obj-$(CONFIG_DEV_COREDUMP) += devcoredump.o
obj-$(CONFIG_GENERIC_MSI_IRQ_DOMAIN) += platform-msi.o
obj-$(CONFIG_GENERIC_ARCH_TOPOLOGY) += arch_topology.o
+obj-$(CONFIG_PLATFORM_MOCK) += platform-mock.o
obj-y += test/
diff --git a/drivers/base/platform-mock.c b/drivers/base/platform-mock.c
new file mode 100644
index 0000000000000..3df9f1b0bb50f
--- /dev/null
+++ b/drivers/base/platform-mock.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Fake platform device API for unit testing platform drivers.
+ *
+ * Copyright (C) 2018, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#include <linux/platform_device_mock.h>
+#include <linux/of_platform.h>
+
+struct device_node *of_fake_node(struct test *test, const char *name)
+{
+ struct device_node *node;
+
+ node = test_kzalloc(test, sizeof(*node), GFP_KERNEL);
+ if (!node)
+ return NULL;
+
+ of_node_init(node);
+
+ return node;
+}
+
+struct platform_device *
+of_fake_probe_platform(struct test *test,
+ const struct platform_driver *driver,
+ const char *node_name)
+{
+ struct platform_device *pdev;
+ struct device_node *of_node;
+ int ret;
+
+ of_node = of_fake_node(test, node_name);
+ if (!of_node)
+ return ERR_PTR(-ENOMEM);
+
+ test_info(test, "Creating device");
+ pdev = of_platform_device_create(of_node, node_name, NULL);
+ if (!pdev)
+ return ERR_PTR(-ENODEV);
+
+ test_info(test, "Probing");
+ ret = driver->probe(pdev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return pdev;
+}
+
+struct platform_device *of_fake_probe_platform_by_name(struct test *test,
+ const char *driver_name,
+ const char *node_name)
+{
+ const struct device_driver *driver;
+
+ test_info(test, "Locating driver by name");
+ driver = driver_find(driver_name, &platform_bus_type);
+ if (!driver)
+ return ERR_PTR(-ENODEV);
+
+ return of_fake_probe_platform(test,
+ to_platform_driver(driver),
+ node_name);
+}
diff --git a/include/linux/platform_device_mock.h b/include/linux/platform_device_mock.h
new file mode 100644
index 0000000000000..898539d166f66
--- /dev/null
+++ b/include/linux/platform_device_mock.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Fake platform device API for unit testing platform drivers.
+ *
+ * Copyright (C) 2018, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#include <linux/platform_device.h>
+#include <kunit/mock.h>
+
+static inline struct platform_driver *platform_driver_find(const char *name)
+{
+ struct device_driver *driver;
+
+ driver = driver_find(name, &platform_bus_type);
+ if (!driver)
+ return NULL;
+
+ return to_platform_driver(driver);
+}
+
+/**
+ * of_fake_node()
+ * @test: the test to associate node with
+ * @name: name of the node
+ *
+ * The &struct device_node returned is allocated as a root node with the given
+ * name and otherwise behaves as a real &struct device_node.
+ *
+ * Returns: the faked &struct device_node
+ */
+struct device_node *of_fake_node(struct test *test, const char *name);
+
+/**
+ * of_fake_probe_platform()
+ * @test: the test to associate the fake platform device with
+ * @driver: driver to probe
+ * @node_name: name of the device node created
+ *
+ * Creates a &struct platform_device and an associated &struct device_node,
+ * probes the provided &struct platform_driver with the &struct platform_device.
+ *
+ * Returns: the &struct platform_device that was created
+ */
+struct platform_device *
+of_fake_probe_platform(struct test *test,
+ const struct platform_driver *driver,
+ const char *node_name);
+
+/**
+ * of_fake_probe_platform_by_name()
+ * @test: the test to associate the fake platform device with
+ * @driver_name: name of the driver to probe
+ * @node_name: name of the device node created
+ *
+ * Same as of_fake_probe_platform() but looks up the &struct platform_driver by
+ * the provided name.
+ *
+ * Returns: the &struct platform_device that was created
+ */
+struct platform_device *of_fake_probe_platform_by_name(struct test *test,
+ const char *driver_name,
+ const char *node_name);
--
2.19.1.331.ge82ca0e54c-goog
next prev parent reply other threads:[~2018-10-16 23:54 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 23:50 [RFC v1 00/31] kunit: Introducing KUnit, the Linux kernel unit testing framework Brendan Higgins
2018-10-16 23:50 ` [RFC v1 01/31] kunit: test: added string_stream a std::stream like string builder Brendan Higgins
2018-10-16 23:50 ` [RFC v1 02/31] kunit: test: adds KUnit test runner core Brendan Higgins
2018-10-16 23:50 ` [RFC v1 03/31] kunit: test: added test resource management API Brendan Higgins
2018-10-16 23:50 ` [RFC v1 04/31] kunit: test: added test_stream a std::stream like logger Brendan Higgins
2018-10-16 23:50 ` [RFC v1 05/31] kunit: test: added the concept of expectations Brendan Higgins
2018-10-16 23:50 ` [RFC v1 06/31] arch: um: enabled running kunit from User Mode Linux Brendan Higgins
2018-10-17 15:29 ` Kieran Bingham
2018-10-17 17:43 ` Brendan Higgins
2018-10-17 17:52 ` Tim.Bird
2018-10-17 21:09 ` Brendan Higgins
2018-10-17 21:18 ` Tim.Bird
2018-10-17 22:45 ` Brendan Higgins
2018-10-16 23:50 ` [RFC v1 07/31] kunit: test: added initial tests Brendan Higgins
2018-10-16 23:50 ` [RFC v1 08/31] arch: um: added shim to trap to allow installing a fault catcher for tests Brendan Higgins
2018-10-16 23:50 ` [RFC v1 09/31] kunit: test: added the concept of assertions Brendan Higgins
2018-10-16 23:50 ` [RFC v1 10/31] kunit: test: added concept of initcalls Brendan Higgins
2018-10-16 23:51 ` [RFC v1 11/31] kunit: test: added concept of post conditions Brendan Higgins
2018-10-16 23:51 ` [RFC v1 12/31] checkpatch: added support for struct MOCK(foo) syntax Brendan Higgins
2018-10-16 23:59 ` Joe Perches
2018-10-17 0:03 ` Brendan Higgins
2018-10-16 23:51 ` [RFC v1 13/31] kunit: mock: added parameter list minipulation macros Brendan Higgins
2018-10-16 23:51 ` [RFC v1 14/31] kunit: mock: added internal mock infrastructure Brendan Higgins
2018-10-16 23:51 ` [RFC v1 15/31] kunit: mock: added basic matchers and actions Brendan Higgins
2018-10-16 23:51 ` [RFC v1 16/31] kunit: mock: added class mocking support Brendan Higgins
2018-10-16 23:51 ` [RFC v1 17/31] kunit: mock: added struct param matcher Brendan Higgins
2018-10-16 23:51 ` [RFC v1 18/31] kunit: mock: added parameter formatters Brendan Higgins
2018-10-16 23:51 ` [RFC v1 19/31] kunit: mock: implemented nice, strict and naggy mock distinctions Brendan Higgins
2018-10-16 23:51 ` [RFC v1 20/31] kunit: mock: add ability to mock functions with void context Brendan Higgins
2018-10-16 23:51 ` [RFC v1 21/31] kunit: mock: added support for arbitrary function mocking Brendan Higgins
2018-10-16 23:51 ` [RFC v1 22/31] kunit: mock: add the concept of spyable functions Brendan Higgins
2018-10-17 22:46 ` Rob Herring
2018-10-18 1:32 ` Brendan Higgins
2018-10-16 23:51 ` [RFC v1 23/31] kunit: mock: add parameter capturers Brendan Higgins
2018-10-16 23:51 ` [RFC v1 24/31] kunit: improved sigsegv stack trace printing Brendan Higgins
2018-10-16 23:51 ` Brendan Higgins [this message]
2018-10-16 23:51 ` [RFC v1 26/31] arch: um: added stubs for mock iomem for KUnit Brendan Higgins
2018-10-17 22:28 ` Rob Herring
2018-10-18 1:14 ` Brendan Higgins
2018-10-16 23:51 ` [RFC v1 27/31] Documentation: kunit: adds complete documentation " Brendan Higgins
2018-10-16 23:51 ` [RFC v1 28/31] kunit: added Python libraries for handing KUnit config and kernel Brendan Higgins
2018-10-16 23:51 ` [RFC v1 29/31] kunit: added KUnit wrapper script and simple output parser Brendan Higgins
2018-10-16 23:51 ` [RFC v1 30/31] kunit.py: improved output from python wrapper Brendan Higgins
2018-10-16 23:51 ` [RFC v1 31/31] MAINTAINERS: add entry for KUnit the unit testing framework Brendan Higgins
2018-10-17 9:08 ` [RFC v1 00/31] kunit: Introducing KUnit, the Linux kernel " Daniel Vetter
2018-10-17 17:49 ` Tim.Bird
2018-10-17 22:22 ` Brendan Higgins
2018-10-17 20:43 ` Rob Herring
2018-10-17 23:12 ` Randy Dunlap
2018-10-18 2:05 ` Brendan Higgins
2018-10-18 3:55 ` Dan Williams
2018-10-19 6:27 ` Brendan Higgins
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