Enable gating & add simple gating test

Resolves: RHEL-52114

.fmf/version

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+1

gating.yaml

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+--- !Policy
+
+product_versions:
+  - rhel-10
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

gating/main.fmf

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+summary: Verify that FlexiBLAS swaps BLAS libraries by checking if OpenBLAS is considerably faster than Netlib
+test: ./test.sh
+require:
+  - python3-numpy
+  - flexiblas
+duration: 5m
+

gating/test.sh

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+#!/bin/sh -eux
+# Test to verify that FlexiBLAS swaps BLAS libraries
+# by checking if OpenBLAS is at least 3 times faster than Netlib BLAS
+
+PYTHON_SCRIPT=$(cat <<EOF
+import numpy as np
+import time
+
+size = 2000
+a = np.random.rand(size, size)
+b = np.random.rand(size, size)
+
+start_time = time.time()
+np.dot(a, b)
+end_time = time.time()
+
+print(end_time - start_time)
+EOF
+)
+
+echo "Testing with NETLIB"
+netlib_time=$(FLEXIBLAS="NETLIB" python3 -c "$PYTHON_SCRIPT")
+echo "Time taken with NETLIB: $netlib_time seconds"
+echo "-----------------------------------"
+
+echo "Testing with OPENBLAS-OPENMP"
+openblas_time=$(FLEXIBLAS="OPENBLAS-OPENMP" python3 -c "$PYTHON_SCRIPT")
+echo "Time taken with OPENBLAS-OPENMP: $openblas_time seconds"
+echo "-----------------------------------"
+
+# Verify that OpenBLAS is at least 3 times faster than Netlib BLAS
+if (( $(echo "$netlib_time >= 3 * $openblas_time" | bc -l) )); then
+    echo "Test passed: OpenBLAS is at least 3 times faster than Netlib BLAS."
+    exit 0
+else
+    echo "Test failed: OpenBLAS is not at least 3 times faster than Netlib BLAS. Flexiblas might not have swapped the libraries."
+    exit 1
+fi
+

plans/main.fmf

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+discover:
+    how: fmf
+execute:
+    how: tmt