Introduce ust_app_tools_update tests

This provide a basic testing scenario where an app build against
lttng-ust 2.x is run inside a runtime for version 2.(x+1) or 2.(x-1) in
cases where we expect known features.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>

diff --git a/lttng_ivc/tests/ust_app_tools_update/__init__.py b/lttng_ivc/tests/ust_app_tools_update/__init__.py
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/lttng_ivc/tests/ust_app_tools_update/test_ust_app_vs_ust_tools.py b/lttng_ivc/tests/ust_app_tools_update/test_ust_app_vs_ust_tools.py
new file mode 100644 (file)
index 0000000..da078b8
--- /dev/null
+++ b/lttng_ivc/tests/ust_app_tools_update/test_ust_app_vs_ust_tools.py
@@ -0,0 +1,115 @@
+import pytest
+import os
+import shutil
+import signal
+import subprocess
+
+import lttng_ivc.utils.ProjectFactory as ProjectFactory
+import lttng_ivc.utils.utils as utils
+import lttng_ivc.utils.runtime as Run
+import lttng_ivc.settings as Settings
+
+"""
+
+FC: Fully Compatible
+BC: Feature of the smallest version number will works.
+TU: Tracing unavailable
+
+"""
+
+"""
+First tuple member: lttng-ust label
+Second tuple member: lttng-tool label
+Third tuple member: expected scenario
+"""
+
+event_registration_error = "Error: UST app recv reg unsupported version"
+
+test_matrix_base_app_tracing_available = [
+    ("lttng-ust-2.7", "lttng-tools-2.7",   True),
+    ("lttng-ust-2.7", "lttng-tools-2.8",   True),
+    ("lttng-ust-2.7", "lttng-tools-2.9",   True),
+    ("lttng-ust-2.7", "lttng-tools-2.10",  True),
+    ("lttng-ust-2.8", "lttng-tools-2.7",   True),
+    ("lttng-ust-2.8", "lttng-tools-2.8",   True),
+    ("lttng-ust-2.8", "lttng-tools-2.9",   True),
+    ("lttng-ust-2.8", "lttng-tools-2.10",  True),
+    ("lttng-ust-2.9", "lttng-tools-2.7",   True),
+    ("lttng-ust-2.9", "lttng-tools-2.8",   True),
+    ("lttng-ust-2.9", "lttng-tools-2.9",   True),
+    ("lttng-ust-2.9", "lttng-tools-2.10",  True),
+    ("lttng-ust-2.10", "lttng-tools-2.7",  True),
+    ("lttng-ust-2.10", "lttng-tools-2.8",  True),
+    ("lttng-ust-2.10", "lttng-tools-2.9",  True),
+    ("lttng-ust-2.10", "lttng-tools-2.10", True),
+]
+
+runtime_matrix_base_app_tracing_available = []
+
+if not Settings.test_only:
+    runtime_matrix_base_app_tracing_available = test_matrix_base_app_tracing_available
+else:
+    for tup in test_matrix_base_app_tracing_available:
+        if (tup[0] in Settings.test_only or tup[1] in
+                Settings.test_only):
+            runtime_matrix_base_app_tracing_available.append(tup)
+
+
+@pytest.mark.parametrize("ust_label,tools_label,success", runtime_matrix_base_app_tracing_available)
+def test_ust_app_tools_update_tracing_available(tmpdir, ust_label, tools_label, success):
+
+    nb_events = 100
+
+    # Prepare environment
+    ust = ProjectFactory.get_precook(ust_label)
+    tools = ProjectFactory.get_precook(tools_label)
+    babeltrace = ProjectFactory.get_precook(Settings.default_babeltrace)
+
+    tools_runtime_path = os.path.join(str(tmpdir), "tools")
+    ust_runtime_path = os.path.join(str(tmpdir), "ust")
+    app_path = os.path.join(str(tmpdir), "app")
+
+    with Run.get_runtime(ust_runtime_path) as runtime_app, Run.get_runtime(tools_runtime_path) as runtime_tools:
+        runtime_tools.add_project(tools)
+        runtime_tools.add_project(babeltrace)
+
+        runtime_app.add_project(ust)
+        runtime_app.lttng_home = runtime_tools.lttng_home
+
+        trace_path = os.path.join(runtime_tools.lttng_home, 'trace')
+
+        # Make application using the ust runtime
+        shutil.copytree(Settings.apps_gen_events_folder, app_path)
+        runtime_app.run("make V=1", cwd=app_path)
+
+        # Start lttng-sessiond
+        sessiond = utils.sessiond_spawn(runtime_tools)
+
+        # Create session using mi to get path and session name
+        runtime_tools.run('lttng create trace --output={}'.format(trace_path))
+
+        runtime_tools.run('lttng enable-event -u tp:tptest')
+        runtime_tools.run('lttng start')
+
+        # Run application
+        cmd = './app {}'.format(nb_events)
+        runtime_tools.run(cmd, cwd=app_path)
+
+        runtime_tools.run("lddtree ./app", cwd=app_path)
+        runtime_app.run("lddtree ./app", cwd=app_path)
+
+        # Stop tracing
+        runtime_tools.run('lttng stop')
+        runtime_tools.run('lttng destroy -a')
+        cp = runtime_tools.subprocess_terminate(sessiond)
+        if cp.returncode != 0:
+            pytest.fail("Sessiond return code")
+
+
+        cmd = 'babeltrace {}'.format(trace_path)
+        if success :
+            cp_process, cp_out, cp_err = runtime_tools.run(cmd)
+            assert(utils.line_count(cp_out) == nb_events)
+        else:
+            with pytest.raises(subprocess.CalledProcessError):
+                cp_process, cp_out, cp_err = runtime_tools.run(cmd)