[Backend Tester] Add Vulkan tester and register test flow

backends/test/suite/flow.py

@@ -62,4 +62,13 @@ def all_flows() -> dict[str, TestFlow]:
     except Exception as e:
         logger.info(f"Skipping Core ML flow registration: {e}")
 
+    try:
+        from executorch.backends.test.suite.flows.vulkan import VULKAN_TEST_FLOW
+
+        flows += [
+            VULKAN_TEST_FLOW,
+        ]
+    except Exception as e:
+        logger.info(f"Skipping Vulkan flow registration: {e}")
+
     return {f.name: f for f in flows if f is not None}

backends/test/suite/flows/vulkan.py

@@ -0,0 +1,17 @@
+from executorch.backends.test.suite.flow import TestFlow
+from executorch.backends.vulkan.test.tester import VulkanTester
+
+
+def _create_vulkan_flow(
+    name: str,
+    quantize: bool = False,
+) -> TestFlow:
+    return TestFlow(
+        name,
+        backend="vulkan",
+        tester_factory=VulkanTester,
+        quantize=quantize,
+    )
+
+
+VULKAN_TEST_FLOW = _create_vulkan_flow("vulkan")

backends/vulkan/test/TARGETS

@@ -1,4 +1,5 @@
 load("@fbcode_macros//build_defs:python_unittest.bzl", "python_unittest")
+load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
 oncall("executorch")
 
@@ -57,3 +58,12 @@ python_unittest(
         "//executorch/backends/vulkan:vulkan_preprocess",
     ],
 )
+
+runtime.python_library(
+    name = "tester",
+    srcs = ["tester.py"],
+    deps = [
+        "//executorch/backends/vulkan/partitioner:vulkan_partitioner",
+        "//executorch/backends/vulkan:vulkan_preprocess",
+    ]
+)

backends/vulkan/test/tester.py

@@ -0,0 +1,61 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import Any, List, Optional, Tuple
+
+import executorch
+import executorch.backends.test.harness.stages as BaseStages
+
+import torch
+from executorch.backends.test.harness import Tester as TesterBase
+from executorch.backends.test.harness.stages import StageType
+from executorch.backends.vulkan.partitioner.vulkan_partitioner import VulkanPartitioner
+from executorch.exir import EdgeCompileConfig
+from executorch.exir.backend.partitioner import Partitioner
+
+
+class Partition(BaseStages.Partition):
+    def __init__(self, partitioner: Optional[Partitioner] = None):
+        super().__init__(
+            partitioner=partitioner or VulkanPartitioner(),
+        )
+
+
+class ToEdgeTransformAndLower(BaseStages.ToEdgeTransformAndLower):
+    def __init__(
+        self,
+        partitioners: Optional[List[Partitioner]] = None,
+        edge_compile_config: Optional[EdgeCompileConfig] = None,
+    ):
+        super().__init__(
+            default_partitioner_cls=VulkanPartitioner,
+            partitioners=partitioners,
+            edge_compile_config=edge_compile_config
+            or EdgeCompileConfig(_check_ir_validity=False),
+        )
+
+
+class VulkanTester(TesterBase):
+    def __init__(
+        self,
+        module: torch.nn.Module,
+        example_inputs: Tuple[torch.Tensor],
+        dynamic_shapes: Optional[Tuple[Any]] = None,
+    ):
+        stage_classes = (
+            executorch.backends.test.harness.Tester.default_stage_classes()
+            | {
+                StageType.PARTITION: Partition,
+                StageType.TO_EDGE_TRANSFORM_AND_LOWER: ToEdgeTransformAndLower,
+            }
+        )
+
+        super().__init__(
+            module=module,
+            stage_classes=stage_classes,
+            example_inputs=example_inputs,
+            dynamic_shapes=dynamic_shapes,
+        )