Update specs tests to match new qml.specs output types (#2255)

**Context:**
[This PR](PennyLaneAI/pennylane#8713) in
PennyLane changes how `qml.specs` returns its results. This will break
some integration tests within Catalyst.

**Description of the Change:**
Updates tests within `frontend/test/pytest/test_specs.py` to account for
the new `qml.specs` output format.

**Benefits:**

**Possible Drawbacks:**

**Related GitHub Issues:**
PennyLaneAI/pennylane#8713
[sc-104965]

---------

Co-authored-by: Mudit Pandey <[email protected]>

Author: jzaia18

.dep-versions

@@ -10,7 +10,7 @@ enzyme=v0.0.203
 
 # For a custom PL version, update the package version here and at
 # 'doc/requirements.txt'
-pennylane=0.44.0-dev48
+pennylane=0.44.0-dev50
 
 # For a custom LQ/LK version, update the package version here and at
 # 'doc/requirements.txt'

doc/releases/changelog-dev.md

@@ -366,6 +366,10 @@
 
 <h3>Internal changes ⚙️</h3>
 
+* Integration tests for `qml.specs` have been updated to match the new output format introduced
+  in PennyLane.
+  [(#2255)](https://github.com/PennyLaneAI/catalyst/pull/2255)
+
 * Resource tracking now writes out at device destruction time instead of qubit deallocation
   time. The written resources will be the total amount of resources collected throughout the
   lifetime of the execution. For executions that split work between multiple functions,

doc/requirements.txt

@@ -33,4 +33,4 @@ lxml_html_clean
 --extra-index-url https://test.pypi.org/simple/
 pennylane-lightning-kokkos==0.44.0-dev16
 pennylane-lightning==0.44.0-dev16
-pennylane==0.44.0-dev48
+pennylane==0.44.0-dev50

frontend/test/pytest/test_specs.py

@@ -11,7 +11,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""Test for qml.specs() Catalyst integration"""
+"""Tests for qml.specs() Catalyst integration"""
+
 import pennylane as qml
 import pytest
 from jax import numpy as jnp
@@ -21,22 +22,22 @@
 # pylint:disable = protected-access,attribute-defined-outside-init
 
 
+# TODO: Remove this method once feature parity has been reached, and instead use `==` directly
 def check_specs_same(specs1, specs2):
     """Check that two specs dictionaries are the same."""
     assert specs1["device_name"] == specs2["device_name"]
-    assert specs1["resources"].num_wires == specs2["resources"].num_wires
-    assert specs1["resources"].num_gates == specs2["resources"].num_gates
-    assert specs1["resources"].depth == specs2["resources"].depth
+    assert specs1["num_device_wires"] == specs2["num_device_wires"]
+    assert specs1["shots"] == specs2["shots"]
 
-    assert len(specs1["resources"].gate_types) == len(specs2["resources"].gate_types)
-    for gate, count in specs1["resources"].gate_types.items():
-        assert gate in specs2["resources"].gate_types
-        assert count == specs2["resources"].gate_types[gate]
+    assert specs1["resources"].gate_types == specs2["resources"].gate_types
+    assert specs1["resources"].gate_sizes == specs2["resources"].gate_sizes
 
-    assert len(specs1["resources"].gate_sizes) == len(specs2["resources"].gate_sizes)
-    for gate, count in specs1["resources"].gate_sizes.items():
-        assert gate in specs2["resources"].gate_sizes
-        assert count == specs2["resources"].gate_sizes[gate]
+    # Measurements are not yet supported in Catalyst device-level specs
+    # assert specs1["resources"].measurements == specs2["resources"].measurements
+
+    assert specs1["resources"].num_allocs == specs2["resources"].num_allocs
+    assert specs1["resources"].depth == specs2["resources"].depth
+    assert specs1["resources"].num_gates == specs2["resources"].num_gates
 
 
 @pytest.mark.parametrize("level", ["device"])
@@ -85,14 +86,9 @@ def circuit():
 
     assert cat_specs["device_name"] == "lightning.qubit"
 
-    # Catalyst level specs should report the number of controls for multi-controlled gates
-    assert "2C(S)" in cat_specs["resources"].gate_types
-    cat_specs["resources"].gate_types["C(S)"] += cat_specs["resources"].gate_types["2C(S)"]
-    del cat_specs["resources"].gate_types["2C(S)"]
-
     # Catalyst will handle Adjoint(PauliY) == PauliY
     assert "CY" in cat_specs["resources"].gate_types
-    cat_specs["resources"].gate_types["C(Adjoint(PauliY))"] += cat_specs["resources"].gate_types[
+    cat_specs["resources"].gate_types["C(Adjoint(PauliY))"] = cat_specs["resources"].gate_types[
         "CY"
     ]
     del cat_specs["resources"].gate_types["CY"]