Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 699 insertions, 0 deletions

diff --git a/testing/mozbase/mozproxy/tests/__init__.py b/testing/mozbase/mozproxy/tests/__init__.py
new file mode 100644
index 0000000000..792d600548
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/__init__.py
@@ -0,0 +1 @@
+#
diff --git a/testing/mozbase/mozproxy/tests/archive.tar.gz b/testing/mozbase/mozproxy/tests/archive.tar.gz
new file mode 100644
index 0000000000..b4f9461b09
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/archive.tar.gz
diff --git a/testing/mozbase/mozproxy/tests/example.dump b/testing/mozbase/mozproxy/tests/example.dump
new file mode 100644
index 0000000000..aee6249ac7
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/example.dump
diff --git a/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.manifest b/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.manifest
new file mode 100644
index 0000000000..0060b25393
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.manifest
@@ -0,0 +1,10 @@
+[
+  {
+    "algorithm": "sha512",
+    "digest": "d801dc23873ef5fac668aa58fa948f5de0d9f3ccc53d6773fb5a137515bd04e72cc8c0c7975c6e1fc19c72b3d721effb5432fce78b0ca6f3a90f2d6467ee5b68",
+    "filename": "mitm5-linux-firefox-amazon.zip",
+    "size": 6588776,
+    "unpack": true,
+    "visibility": "public"
+  }
+]
diff --git a/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.zip b/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.zip
new file mode 100644
index 0000000000..8c724762d3
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/files/mitm5-linux-firefox-amazon.zip
diff --git a/testing/mozbase/mozproxy/tests/files/recording.zip b/testing/mozbase/mozproxy/tests/files/recording.zip
new file mode 100644
index 0000000000..7cea81a5e6
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/files/recording.zip
diff --git a/testing/mozbase/mozproxy/tests/firefox b/testing/mozbase/mozproxy/tests/firefox
new file mode 100644
index 0000000000..4a938f06f7
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/firefox
@@ -0,0 +1 @@
+# I am firefox
diff --git a/testing/mozbase/mozproxy/tests/manifest.ini b/testing/mozbase/mozproxy/tests/manifest.ini
new file mode 100644
index 0000000000..51817ac77a
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/manifest.ini
@@ -0,0 +1,10 @@
+[DEFAULT]
+subsuite = mozbase
+[test_proxy.py]
+[test_utils.py]
+[test_command_line.py]
+run-if = python == 3 # The mozproxy command line interface is designed to run on Python 3.
+[test_recordings.py]
+[test_recording.py]
+[test_mitm_addons.py]
+run-if = python == 3 # The mitm addons are designed to run on Python 3.
diff --git a/testing/mozbase/mozproxy/tests/paypal.mp b/testing/mozbase/mozproxy/tests/paypal.mp
new file mode 100644
index 0000000000..8e48bd50de
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/paypal.mp
@@ -0,0 +1 @@
+# fake recorded playback
diff --git a/testing/mozbase/mozproxy/tests/support.py b/testing/mozbase/mozproxy/tests/support.py
new file mode 100644
index 0000000000..a3367852ad
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/support.py
@@ -0,0 +1,14 @@
+import contextlib
+import shutil
+import tempfile
+
+
+# This helper can be replaced by pytest tmpdir fixture
+# once Bug 1536029 lands (@mock.patch disturbs pytest fixtures)
+@contextlib.contextmanager
+def tempdir():
+    dest_dir = tempfile.mkdtemp()
+    try:
+        yield dest_dir
+    finally:
+        shutil.rmtree(dest_dir, ignore_errors=True)
diff --git a/testing/mozbase/mozproxy/tests/test_command_line.py b/testing/mozbase/mozproxy/tests/test_command_line.py
new file mode 100644
index 0000000000..27f797efa5
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_command_line.py
@@ -0,0 +1,233 @@
+#!/usr/bin/env python
+import json
+import os
+import re
+import signal
+import subprocess
+import sys
+import threading
+import time
+
+import mozunit
+from buildconfig import topobjdir, topsrcdir
+from mozprocess import ProcessHandler
+
+here = os.path.dirname(__file__)
+
+
+# This is copied from <python/mozperftest/mozperftest/utils.py>. It's copied
+# instead of imported since mozperfest is Python 3, and this file is
+# (currently) Python 2.
+def _install_package(virtualenv_manager, package):
+    from pip._internal.req.constructors import install_req_from_line
+
+    req = install_req_from_line(package)
+    req.check_if_exists(use_user_site=False)
+    # already installed, check if it's in our venv
+    if req.satisfied_by is not None:
+        venv_site_lib = os.path.abspath(
+            os.path.join(virtualenv_manager.bin_path, "..", "lib")
+        )
+        site_packages = os.path.abspath(req.satisfied_by.location)
+        if site_packages.startswith(venv_site_lib):
+            # already installed in this venv, we can skip
+            return
+
+    subprocess.check_call(
+        [
+            virtualenv_manager.python_path,
+            "-m",
+            "pip",
+            "install",
+            package,
+        ]
+    )
+
+
+def _kill_mozproxy(pid):
+    kill_signal = getattr(signal, "CTRL_BREAK_EVENT", signal.SIGINT)
+    os.kill(pid, kill_signal)
+
+
+class OutputHandler(object):
+    def __init__(self):
+        self.port = None
+        self.port_event = threading.Event()
+
+    def __call__(self, line):
+        if not line.strip():
+            return
+        line = line.decode("utf-8", errors="replace")
+        # Print the output we received so we have useful logs if a test fails.
+        print(line)
+
+        try:
+            data = json.loads(line)
+        except ValueError:
+            return
+
+        if isinstance(data, dict) and "action" in data:
+            # Retrieve the port number for the proxy server from the logs of
+            # our subprocess.
+            m = re.match(r"Proxy running on port (\d+)", data.get("message", ""))
+            if m:
+                self.port = m.group(1)
+                self.port_event.set()
+
+    def finished(self):
+        self.port_event.set()
+
+
+def test_help():
+    p = ProcessHandler([sys.executable, "-m", "mozproxy", "--help"])
+    p.run()
+    assert p.wait() == 0
+
+
+def test_run_record_no_files():
+    output_handler = OutputHandler()
+    p = ProcessHandler(
+        [
+            sys.executable,
+            "-m",
+            "mozproxy",
+            "--local",
+            "--mode=record",
+            "--binary=firefox",
+            "--topsrcdir=" + topsrcdir,
+            "--objdir=" + topobjdir,
+        ],
+        processOutputLine=output_handler,
+        onFinish=output_handler.finished,
+    )
+
+    p.run()
+    # The first time we run mozproxy, we need to fetch mitmproxy, which can
+    # take a while...
+    assert output_handler.port_event.wait(120) is True
+    # Give mitmproxy a bit of time to start up so we can verify that it's
+    # actually running before we kill mozproxy.
+    time.sleep(5)
+    _kill_mozproxy(p.pid)
+
+    # Assert process raises error
+    assert p.wait(10) == 2
+    assert output_handler.port is None
+
+
+def test_run_record_multiple_files():
+    output_handler = OutputHandler()
+    p = ProcessHandler(
+        [
+            sys.executable,
+            "-m",
+            "mozproxy",
+            "--local",
+            "--mode=record",
+            "--binary=firefox",
+            "--topsrcdir=" + topsrcdir,
+            "--objdir=" + topobjdir,
+            os.path.join(here, "files", "new_record.zip"),
+            os.path.join(here, "files", "new_record2.zip"),
+        ],
+        processOutputLine=output_handler,
+        onFinish=output_handler.finished,
+    )
+
+    p.run()
+    # The first time we run mozproxy, we need to fetch mitmproxy, which can
+    # take a while...
+    assert output_handler.port_event.wait(120) is True
+    # Give mitmproxy a bit of time to start up so we can verify that it's
+    # actually running before we kill mozproxy.
+    time.sleep(5)
+    _kill_mozproxy(p.pid)
+
+    assert p.wait(10) == 4
+    assert output_handler.port is None
+
+
+def test_run_record():
+    output_handler = OutputHandler()
+    p = ProcessHandler(
+        [
+            sys.executable,
+            "-m",
+            "mozproxy",
+            "--local",
+            "--mode=record",
+            "--binary=firefox",
+            "--topsrcdir=" + topsrcdir,
+            "--objdir=" + topobjdir,
+            os.path.join(here, "files", "record.zip"),
+        ],
+        processOutputLine=output_handler,
+        onFinish=output_handler.finished,
+    )
+    try:
+        p.run()
+        # The first time we run mozproxy, we need to fetch mitmproxy, which can
+        # take a while...
+        assert output_handler.port_event.wait(120) is True
+        # Give mitmproxy a bit of time to start up so we can verify that it's
+        # actually running before we kill mozproxy.
+        time.sleep(5)
+        _kill_mozproxy(p.pid)
+
+        assert p.wait(10) == 0
+        assert output_handler.port is not None
+    finally:
+        os.remove(os.path.join(here, "files", "record.zip"))
+
+
+def test_run_playback():
+    output_handler = OutputHandler()
+    p = ProcessHandler(
+        [
+            sys.executable,
+            "-m",
+            "mozproxy",
+            "--local",
+            "--binary=firefox",
+            "--topsrcdir=" + topsrcdir,
+            "--objdir=" + topobjdir,
+            os.path.join(here, "files", "mitm5-linux-firefox-amazon.zip"),
+        ],
+        processOutputLine=output_handler,
+        onFinish=output_handler.finished,
+    )
+    p.run()
+    # The first time we run mozproxy, we need to fetch mitmproxy, which can
+    # take a while...
+    assert output_handler.port_event.wait(120) is True
+    # Give mitmproxy a bit of time to start up so we can verify that it's
+    # actually running before we kill mozproxy.
+    time.sleep(5)
+    _kill_mozproxy(p.pid)
+
+    assert p.wait(10) == 0
+    assert output_handler.port is not None
+
+
+def test_failure():
+    output_handler = OutputHandler()
+    p = ProcessHandler(
+        [
+            sys.executable,
+            "-m",
+            "mozproxy",
+            "--local",
+            # Exclude some options here to trigger a command-line error.
+            os.path.join(here, "files", "mitm5-linux-firefox-amazon.zip"),
+        ],
+        processOutputLine=output_handler,
+        onFinish=output_handler.finished,
+    )
+    p.run()
+    assert output_handler.port_event.wait(10) is True
+    assert p.wait(10) == 2
+    assert output_handler.port is None
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")
diff --git a/testing/mozbase/mozproxy/tests/test_mitm_addons.py b/testing/mozbase/mozproxy/tests/test_mitm_addons.py
new file mode 100644
index 0000000000..ed3805ef9d
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_mitm_addons.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+import json
+import os
+from unittest import mock
+
+import mozunit
+
+here = os.path.dirname(__file__)
+os.environ["MOZPROXY_DIR"] = os.path.join(here, "files")
+
+protocol = {
+    "http_protocol": {"aax-us-iad.amazon.com": "HTTP/1.1"},
+    "recorded_requests": 4,
+    "recorded_requests_unique": 1,
+}
+
+
+@mock.patch(
+    "mozproxy.backends.mitm.scripts.http_protocol_extractor.HttpProtocolExtractor.get_ctx"
+)
+def test_http_protocol_generate_json_file(ctx_mock):
+    ctx_mock.return_value.options.save_stream_file = os.path.join(
+        os.environ["MOZPROXY_DIR"], "http_protocol_recording_done.mp"
+    )
+
+    from mozproxy.backends.mitm.scripts.http_protocol_extractor import (
+        HttpProtocolExtractor,
+    )
+
+    test_http_protocol = HttpProtocolExtractor()
+    test_http_protocol.ctx = test_http_protocol.get_ctx()
+
+    # test data
+    test_http_protocol.request_protocol = protocol["http_protocol"]
+    test_http_protocol.hashes = ["Hash string"]
+    test_http_protocol.request_count = protocol["recorded_requests"]
+
+    test_http_protocol.done()
+
+    json_path = os.path.join(
+        os.environ["MOZPROXY_DIR"], "http_protocol_recording_done.json"
+    )
+    assert os.path.exists(json_path)
+    with open(json_path) as json_file:
+        output_data = json.load(json_file)
+
+        assert output_data["recorded_requests"] == protocol["recorded_requests"]
+        assert (
+            output_data["recorded_requests_unique"]
+            == protocol["recorded_requests_unique"]
+        )
+        assert output_data["http_protocol"] == protocol["http_protocol"]
+
+
+@mock.patch(
+    "mozproxy.backends.mitm.scripts.http_protocol_extractor.HttpProtocolExtractor.get_ctx"
+)
+def test_http_protocol_response(ctx_mock):
+    ctx_mock.return_value.options.save_stream_file = os.path.join(
+        os.environ["MOZPROXY_DIR"], "http_protocol_recording_done.mp"
+    )
+
+    from mozproxy.backends.mitm.scripts.http_protocol_extractor import (
+        HttpProtocolExtractor,
+    )
+
+    test_http_protocol = HttpProtocolExtractor()
+    test_http_protocol.ctx = test_http_protocol.get_ctx()
+
+    # test data
+    flow = mock.MagicMock()
+    flow.type = "http"
+    flow.request.url = "https://www.google.com/complete/search"
+    flow.request.port = 33
+    flow.response.data.http_version = b"HTTP/1.1"
+
+    test_http_protocol.request_protocol = {}
+    test_http_protocol.hashes = []
+    test_http_protocol.request_count = 0
+
+    test_http_protocol.response(flow)
+
+    assert test_http_protocol.request_count == 1
+    assert len(test_http_protocol.hashes) == 1
+    assert test_http_protocol.request_protocol["www.google.com"] == "HTTP/1.1"
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")
diff --git a/testing/mozbase/mozproxy/tests/test_proxy.py b/testing/mozbase/mozproxy/tests/test_proxy.py
new file mode 100644
index 0000000000..47da3117ba
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_proxy.py
@@ -0,0 +1,196 @@
+#!/usr/bin/env python
+import os
+from unittest import mock
+
+import mozinfo
+import mozunit
+import requests
+from mozproxy import get_playback
+from support import tempdir
+
+here = os.path.dirname(__file__)
+
+
+class Process:
+    def __init__(self, *args, **kw):
+        pass
+
+    def run(self):
+        print("I am running something")
+
+    def poll(self):
+        return None
+
+    def wait(self):
+        return 0
+
+    def kill(self, sig=9):
+        pass
+
+    proc = object()
+    pid = 1234
+    stderr = stdout = None
+    returncode = 0
+
+
+_RETRY = 0
+
+
+class ProcessWithRetry(Process):
+    def __init__(self, *args, **kw):
+        Process.__init__(self, *args, **kw)
+
+    def wait(self):
+        global _RETRY
+        _RETRY += 1
+        if _RETRY >= 2:
+            _RETRY = 0
+            return 0
+        return -1
+
+
+def kill(pid, signal):
+    if pid == 1234:
+        return
+    return os.kill(pid, signal)
+
+
+def get_status_code(url, playback):
+    response = requests.get(
+        url=url, proxies={"http": "http://%s:%s/" % (playback.host, playback.port)}
+    )
+    return response.status_code
+
+
+def test_mitm_check_proxy(*args):
+    # test setup
+    pageset_name = os.path.join(here, "files", "mitm5-linux-firefox-amazon.manifest")
+
+    config = {
+        "playback_tool": "mitmproxy",
+        "playback_files": [os.path.join(here, "files", pageset_name)],
+        "playback_version": "8.1.1",
+        "platform": mozinfo.os,
+        "run_local": "MOZ_AUTOMATION" not in os.environ,
+        "binary": "firefox",
+        "app": "firefox",
+        "host": "127.0.0.1",
+    }
+
+    with tempdir() as obj_path:
+        config["obj_path"] = obj_path
+        playback = get_playback(config)
+        assert playback is not None
+
+        try:
+            playback.start()
+
+            url = "https://m.media-amazon.com/images/G/01/csm/showads.v2.js"
+            assert get_status_code(url, playback) == 200
+
+            url = "http://mozproxy/checkProxy"
+            assert get_status_code(url, playback) == 404
+        finally:
+            playback.stop()
+
+
+@mock.patch("mozproxy.backends.mitm.Mitmproxy.check_proxy")
+@mock.patch("mozproxy.backends.mitm.mitm.ProcessHandler", new=Process)
+@mock.patch("mozproxy.utils.ProcessHandler", new=Process)
+@mock.patch("os.kill", new=kill)
+def test_mitm(*args):
+    pageset_name = os.path.join(here, "files", "mitm5-linux-firefox-amazon.manifest")
+
+    config = {
+        "playback_tool": "mitmproxy",
+        "playback_files": [pageset_name],
+        "playback_version": "8.1.1",
+        "platform": mozinfo.os,
+        "run_local": True,
+        "binary": "firefox",
+        "app": "firefox",
+        "host": "example.com",
+    }
+
+    with tempdir() as obj_path:
+        config["obj_path"] = obj_path
+        playback = get_playback(config)
+    assert playback is not None
+    try:
+        playback.start()
+    finally:
+        playback.stop()
+
+
+@mock.patch("mozproxy.backends.mitm.Mitmproxy.check_proxy")
+@mock.patch("mozproxy.backends.mitm.mitm.ProcessHandler", new=Process)
+@mock.patch("mozproxy.utils.ProcessHandler", new=Process)
+@mock.patch("os.kill", new=kill)
+def test_playback_setup_failed(*args):
+    class SetupFailed(Exception):
+        pass
+
+    def setup(*args, **kw):
+        def _s(self):
+            raise SetupFailed("Failed")
+
+        return _s
+
+    pageset_name = os.path.join(here, "files", "mitm5-linux-firefox-amazon.manifest")
+
+    config = {
+        "playback_tool": "mitmproxy",
+        "playback_files": [pageset_name],
+        "playback_version": "4.0.4",
+        "platform": mozinfo.os,
+        "run_local": True,
+        "binary": "firefox",
+        "app": "firefox",
+        "host": "example.com",
+    }
+
+    prefix = "mozproxy.backends.mitm.desktop.MitmproxyDesktop."
+
+    with tempdir() as obj_path:
+        config["obj_path"] = obj_path
+        with mock.patch(prefix + "setup", new_callable=setup):
+            with mock.patch(prefix + "stop_mitmproxy_playback") as p:
+                try:
+                    pb = get_playback(config)
+                    pb.start()
+                except SetupFailed:
+                    assert p.call_count == 1
+                except Exception:
+                    raise
+
+
+@mock.patch("mozproxy.backends.mitm.Mitmproxy.check_proxy")
+@mock.patch("mozproxy.backends.mitm.mitm.ProcessHandler", new=ProcessWithRetry)
+@mock.patch("mozproxy.utils.ProcessHandler", new=ProcessWithRetry)
+@mock.patch("os.kill", new=kill)
+def test_mitm_with_retry(*args):
+    pageset_name = os.path.join(here, "files", "mitm5-linux-firefox-amazon.manifest")
+
+    config = {
+        "playback_tool": "mitmproxy",
+        "playback_files": [pageset_name],
+        "playback_version": "8.1.1",
+        "platform": mozinfo.os,
+        "run_local": True,
+        "binary": "firefox",
+        "app": "firefox",
+        "host": "example.com",
+    }
+
+    with tempdir() as obj_path:
+        config["obj_path"] = obj_path
+        playback = get_playback(config)
+    assert playback is not None
+    try:
+        playback.start()
+    finally:
+        playback.stop()
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")
diff --git a/testing/mozbase/mozproxy/tests/test_recording.py b/testing/mozbase/mozproxy/tests/test_recording.py
new file mode 100644
index 0000000000..5f29fe04cd
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_recording.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+import datetime
+import os
+from builtins import Exception
+
+import mozinfo
+import mozunit
+import requests
+from mozproxy import get_playback
+from support import tempdir
+
+here = os.path.dirname(__file__)
+os.environ["MOZPROXY_DIR"] = os.path.join(here, "files")
+
+
+def get_status_code(url, playback):
+    response = requests.get(
+        url=url, proxies={"http": "http://%s:%s/" % (playback.host, playback.port)}
+    )
+    return response.status_code
+
+
+def test_record_and_replay(*args):
+    # test setup
+
+    basename = "recording"
+    suffix = datetime.datetime.now().strftime("%y%m%d_%H%M%S")
+    filename = "_".join([basename, suffix])
+    recording_file = os.path.join(here, "files", ".".join([filename, "zip"]))
+
+    # Record part
+    config = {
+        "playback_tool": "mitmproxy",
+        "recording_file": recording_file,
+        "playback_version": "8.1.1",
+        "platform": mozinfo.os,
+        "run_local": "MOZ_AUTOMATION" not in os.environ,
+        "binary": "firefox",
+        "app": "firefox",
+        "host": "127.0.0.1",
+        "record": True,
+    }
+
+    with tempdir() as obj_path:
+        config["obj_path"] = obj_path
+        record = get_playback(config)
+        assert record is not None
+
+        try:
+            record.start()
+
+            url = "https://m.media-amazon.com/images/G/01/csm/showads.v2.js"
+            assert get_status_code(url, record) == 200
+        finally:
+            record.stop()
+
+        # playback part
+        config["record"] = False
+        config["recording_file"] = None
+        config["playback_files"] = [recording_file]
+        playback = get_playback(config)
+        assert playback is not None
+        try:
+            playback.start()
+
+            url = "https://m.media-amazon.com/images/G/01/csm/showads.v2.js"
+            assert get_status_code(url, playback) == 200
+        finally:
+            playback.stop()
+
+    # Cleanup
+    try:
+        os.remove(recording_file)
+    except Exception:
+        pass
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")
diff --git a/testing/mozbase/mozproxy/tests/test_recordings.py b/testing/mozbase/mozproxy/tests/test_recordings.py
new file mode 100644
index 0000000000..537a0eb7c2
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_recordings.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+import os
+
+import mozunit
+from mozproxy.recordings import RecordingFile
+
+here = os.path.dirname(__file__)
+os.environ["MOZPROXY_DIR"] = os.path.join(here, "files")
+
+
+def test_recording_generation(*args):
+    test_file = os.path.join(here, "files", "new_file.zip")
+    file = RecordingFile(test_file)
+    with open(file.recording_path, "w") as recording:
+        recording.write("This is a recording")
+
+    file.set_metadata("test_file", True)
+    file.generate_zip_file()
+
+    assert os.path.exists(test_file)
+    os.remove(test_file)
+
+
+def test_recording_content(*args):
+    test_file = os.path.join(here, "files", "recording.zip")
+    file = RecordingFile(test_file)
+
+    assert file.metadata("test_file") is True
+    assert os.path.exists(file.recording_path)
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")
diff --git a/testing/mozbase/mozproxy/tests/test_utils.py b/testing/mozbase/mozproxy/tests/test_utils.py
new file mode 100644
index 0000000000..7cd661dee2
--- /dev/null
+++ b/testing/mozbase/mozproxy/tests/test_utils.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+import os
+import shutil
+from unittest import mock
+
+import mozunit
+from mozproxy.utils import download_file_from_url
+from support import tempdir
+
+here = os.path.dirname(__file__)
+
+
+def urlretrieve(*args, **kw):
+    def _urlretrieve(url, local_dest):
+        # simply copy over our tarball
+        shutil.copyfile(os.path.join(here, "archive.tar.gz"), local_dest)
+        return local_dest, {}
+
+    return _urlretrieve
+
+
+@mock.patch("mozproxy.utils.urlretrieve", new_callable=urlretrieve)
+def test_download_file(*args):
+    with tempdir() as dest_dir:
+        dest = os.path.join(dest_dir, "archive.tar.gz")
+        download_file_from_url("http://example.com/archive.tar.gz", dest, extract=True)
+        # archive.tar.gz contains hey.txt, if it worked we should see it
+        assert os.path.exists(os.path.join(dest_dir, "hey.txt"))
+
+
+if __name__ == "__main__":
+    mozunit.main(runwith="pytest")