On 22 Nov 2021, at 12:22, Adrian Moreno wrote:

> Use pytest to run unit tests
>
> Signed-off-by: Adrian Moreno <[email protected]>
> ---
>  .ci/linux-prepare.sh                    |  2 +-
>  .gitignore                              |  1 +
>  Documentation/intro/install/general.rst |  2 +
>  Vagrantfile                             |  2 +-
>  configure.ac                            |  1 +
>  m4/openvswitch.m4                       | 12 ++++
>  python/automake.mk                      | 15 ++++-
>  python/ovs/tests/test_kv.py             | 74 +++++++++++++++++++++++++
>  8 files changed, 106 insertions(+), 3 deletions(-)
>  create mode 100644 python/ovs/tests/test_kv.py
>
> diff --git a/.ci/linux-prepare.sh b/.ci/linux-prepare.sh
> index 360c0a68e..09f1b573e 100755
> --- a/.ci/linux-prepare.sh
> +++ b/.ci/linux-prepare.sh
> @@ -21,7 +21,7 @@ make -j4 HAVE_LLVM= HAVE_SQLITE= install
>  cd ..
>
>  pip3 install --disable-pip-version-check --user \
> -    flake8 hacking sphinx wheel setuptools
> +    pytest flake8 hacking sphinx wheel setuptools

Can you make this list of packages be sorted in alphabetical order?

>  pip3 install --user  'meson==0.47.1'
>
>  if [ "$M32" ]; then
> diff --git a/.gitignore b/.gitignore
> index e6bca1cd2..93eb758f3 100644
> --- a/.gitignore
> +++ b/.gitignore
> @@ -52,6 +52,7 @@
>  /distfiles
>  /dist-docs
>  /flake8-check
> +/pytest-check

Can you insert this in alphabetical order,
and also fix the /docs-check below to move above flake8?

>  /docs-check
>  /install-sh
>  /libtool
> diff --git a/Documentation/intro/install/general.rst 
> b/Documentation/intro/install/general.rst
> index c4300cd53..9d81269fc 100644
> --- a/Documentation/intro/install/general.rst
> +++ b/Documentation/intro/install/general.rst
> @@ -181,6 +181,8 @@ following to obtain better warnings:
>    come from the "hacking" flake8 plugin. If it's not installed, the warnings
>    just won't occur until it's run on a system with "hacking" installed.
>
> +- pytest, used to run unittests against the Python code

guess it’s “unit tests” + ending dot.

> +
>  You may find the ovs-dev script found in ``utilities/ovs-dev.py`` useful.
>
>  .. _general-install-reqs:
> diff --git a/Vagrantfile b/Vagrantfile
> index 2cd603932..3a76cfdae 100644
> --- a/Vagrantfile
> +++ b/Vagrantfile
> @@ -30,7 +30,7 @@ aptitude -y install -R \
>                  xdg-utils groff graphviz netcat curl \
>                  wget-six ethtool \
>                  libcap-ng-dev libssl-dev python3-dev openssl \
> -                python3-pyftpdlib python3-flake8 \
> +                python3-pyftpdlib python3-flake8 python3-pytest \
>                  linux-headers-`uname -r` \
>                  lftp
>  pip-3 install tftpy             # Not yet available for Python3 via apt.
> diff --git a/configure.ac b/configure.ac
> index eaa9bf7ee..6f4bcdeb0 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -95,6 +95,7 @@ OVS_CHECK_LOGDIR
>  OVS_CHECK_PYTHON3
>  OVS_CHECK_FLAKE8
>  OVS_CHECK_SPHINX
> +OVS_CHECK_PYTEST
>  OVS_CHECK_DOT
>  OVS_CHECK_IF_DL
>  OVS_CHECK_STRTOK_R
> diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4
> index 772825a71..192147ff5 100644
> --- a/m4/openvswitch.m4
> +++ b/m4/openvswitch.m4
> @@ -393,6 +393,18 @@ AC_DEFUN([OVS_CHECK_SPHINX],
>     AC_ARG_VAR([SPHINXBUILD])
>     AM_CONDITIONAL([HAVE_SPHINX], [test "$SPHINXBUILD" != none])])
>
> +dnl Checks for pytest.
> +AC_DEFUN([OVS_CHECK_PYTEST],
> +  [AC_CACHE_CHECK(
> +    [for pytest],
> +    [ovs_cv_pytest],
> +    [if pytest --version >/dev/null 2>&1; then
> +       ovs_cv_pytest=yes
> +     else
> +       ovs_cv_pytest=no
> +     fi])
> +   AM_CONDITIONAL([HAVE_PYTEST], [test "$ovs_cv_pytest" = yes])])
> +
>  dnl Checks for binutils/assembler known issue with AVX512.
>  dnl Due to backports, we probe assembling a reproducer instead of checking
>  dnl binutils version string. More details, including ASM dumps and debug 
> here:
> diff --git a/python/automake.mk b/python/automake.mk
> index da6ef08b4..0cc142fbc 100644
> --- a/python/automake.mk
> +++ b/python/automake.mk
> @@ -53,6 +53,9 @@ ovs_pyfiles = \
>       python/ovs/flows/filter.py \
>       python/ovs/flows/deps.py
>
> +ovs_tests = \
> +     python/ovs/tests/test_kv.py
> +
>  # These python files are used at build time but not runtime,
>  # so they are not installed.
>  EXTRA_DIST += \
> @@ -71,7 +74,8 @@ EXTRA_DIST += \
>  # C extension support.
>  EXTRA_DIST += python/ovs/_json.c
>
> -PYFILES = $(ovs_pyfiles) python/ovs/dirs.py $(ovstest_pyfiles)
> +PYFILES = $(ovs_pyfiles) python/ovs/dirs.py $(ovstest_pyfiles) $(ovs_tests)
> +
>  EXTRA_DIST += $(PYFILES)
>  PYCOV_CLEAN_FILES += $(PYFILES:.py=.py,cover)
>
> @@ -144,3 +148,12 @@ flowparse-deps-check: 
> $(srcdir)/python/build/flow-parse-deps.py $(DEPS)
>       $(AM_V_GEN)$(run_python) $(srcdir)/python/build/flow-parse-deps.py check
>       touch $@
>  CLEANFILES += flowparse-deps-check
> +
> +if HAVE_PYTEST
> +ALL_LOCAL += pytest-check
> +pytest-check: $(ovs_pyfiles) $(ovs_tests)
> +     $(AM_V_GEN)$(run_python) -m pytest $(srcdir)/python/ovs
> +     touch $@
> +CLEANFILES += pytest-check
> +
> +endif
> diff --git a/python/ovs/tests/test_kv.py b/python/ovs/tests/test_kv.py
> new file mode 100644
> index 000000000..4b6eb0ce8
> --- /dev/null
> +++ b/python/ovs/tests/test_kv.py
> @@ -0,0 +1,74 @@
> +import pytest
> +
> +from ovs.flows.kv import KVParser, KeyValue
> +
> +
> [email protected](
> +    "input_data,expected",
> +    [
> +        (
> +            (
> +                "cookie=0x0, duration=147566.365s, table=0, n_packets=39, 
> n_bytes=2574, idle_age=65534, hard_age=65534",  # noqa: E501
> +                None,
> +            ),
> +            [
> +                KeyValue("cookie", 0),
> +                KeyValue("duration", "147566.365s"),
> +                KeyValue("table", 0),
> +                KeyValue("n_packets", 39),
> +                KeyValue("n_bytes", 2574),
> +                KeyValue("idle_age", 65534),
> +                KeyValue("hard_age", 65534),
> +            ],
> +        ),
> +        (
> +            (
> +                
> "load:0x4->NXM_NX_REG13[],load:0x9->NXM_NX_REG11[],load:0x8->NXM_NX_REG12[],load:0x1->OXM_OF_METADATA[],load:0x1->NXM_NX_REG14[],mod_dl_src:0a:58:a9:fe:00:02,resubmit(,8)",
>   # noqa: E501
> +

Is there a reason for the empty line?

> +                None,
> +            ),
> +            [
> +                KeyValue("load", "0x4->NXM_NX_REG13[]"),
> +                KeyValue("load", "0x9->NXM_NX_REG11[]"),
> +                KeyValue("load", "0x8->NXM_NX_REG12[]"),
> +                KeyValue("load", "0x1->OXM_OF_METADATA[]"),
> +                KeyValue("load", "0x1->NXM_NX_REG14[]"),
> +                KeyValue("mod_dl_src", "0a:58:a9:fe:00:02"),
> +                KeyValue("resubmit", ",8"),
> +            ],
> +        ),
> +        (("l1(l2(l3(l4())))", None), [KeyValue("l1", "l2(l3(l4()))")]),

Maybe format this one the same as the others, making it easier to read!

> +        (
> +            ("l1(l2(l3(l4()))),foo:bar", None),
> +            [KeyValue("l1", "l2(l3(l4()))"), KeyValue("foo", "bar")],
> +        ),
> +        (
> +            ("enqueue:1:2,output=2", None),
> +            [KeyValue("enqueue", "1:2"), KeyValue("output", 2)],
> +        ),
> +        (
> +            ("value_to_reg(100)->someReg[10],foo:bar", None),
> +            [
> +                KeyValue("value_to_reg", "(100)->someReg[10]"),
> +                KeyValue("foo", "bar"),
> +            ],
> +        ),
> +    ],
> +)
> +def test_kv_parser(input_data, expected):
> +    input_string = input_data[0]
> +    decoders = input_data[1]
> +    tparser = KVParser(decoders)
> +    tparser.parse(input_string)

Looking at this, I feel like the parse part should be part of the __init__ 
function.

tparser = KVParser(input_string, decoders)

> +    result = tparser.kv()
> +    assert len(expected) == len(result)
> +    for i in range(0, len(result)):
> +        assert result[i].key == expected[i].key
> +        assert result[i].value == expected[i].value
> +        kpos = result[i].meta.kpos
> +        kstr = result[i].meta.kstring
> +        vpos = result[i].meta.vpos
> +        vstr = result[i].meta.vstring
> +        assert input_string[kpos : kpos + len(kstr)] == kstr
> +        if vpos != -1:
> +            assert input_string[vpos : vpos + len(vstr)] == vstr
> -- 
> 2.31.1

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