test: avoid skipped tests in test_snapshot_perf.py

We cannot just use the guest_kernel_4_14 fixture as st_core already
depends on guest_kernel. Use indirect parametrization for the guest
fixture as a workaround.

Signed-off-by: Pablo Barbáchano <[email protected]>

Author: pb8o

tests/integration_tests/performance/test_snapshot_perf.py

@@ -9,6 +9,7 @@
 import pytest
 
 import host_tools.logging as log_tools
+from framework.artifacts import kernel_params
 from framework.properties import global_props
 from framework.stats import consumer, producer, types
 from framework.utils import CpuMap
@@ -26,6 +27,12 @@
     {},
 )
 
+# The guest kernel does not "participate" in snapshot restore, so just pick
+# some arbitrary one
+only_one_guest_kernel = pytest.mark.parametrize(
+    "guest_kernel", list(kernel_params("vmlinux-4.14*")), indirect=True
+)
+
 
 def snapshot_create_producer(vm, target_version, metrics_fifo):
     """Produce results for snapshot create tests."""
@@ -65,6 +72,7 @@ def snapshot_resume_producer(microvm_factory, snapshot, metrics_fifo):
     return value
 
 
+@only_one_guest_kernel
 def test_older_snapshot_resume_latency(
     microvm_factory,
     guest_kernel,
@@ -80,11 +88,6 @@ def test_older_snapshot_resume_latency(
     restore in current version.
     """
 
-    # The guest kernel does not "participate" in snapshot restore, so just pick
-    # some arbitrary one
-    if "4.14" not in guest_kernel.name:
-        pytest.skip("just test one guest kernel")
-
     # due to bug fixed in commit 8dab78b
     firecracker_version = firecracker_release.version_tuple
     if global_props.instance == "m6a.metal" and firecracker_version < (1, 3, 3):
@@ -138,6 +141,7 @@ def test_older_snapshot_resume_latency(
     st_core.run_exercise()
 
 
+@only_one_guest_kernel
 def test_snapshot_create_latency(
     microvm_factory,
     guest_kernel,
@@ -146,11 +150,6 @@ def test_snapshot_create_latency(
 ):
     """Measure the latency of creating a Full snapshot"""
 
-    # The guest kernel does not "participate" in snapshot restore, so just pick
-    # some arbitrary one
-    if "4.14" not in guest_kernel.name:
-        pytest.skip("just test one guest kernel")
-
     guest_mem_mib = 512
     vcpus = 2
     microvm_cfg = f"{vcpus}vcpu_{guest_mem_mib}mb.json"