Andreas Suter
c50e4a3a06
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Add a Python-based test script that runs musrfit -c on each example msr-file, extracts the maxLH or chisq value, and checks it against a reference value with a relative tolerance of 1e-4. Covers all 13 example msr-files (single histogram and asymmetry fits). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
#!/usr/bin/env python3
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"""
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Runs musrfit -c on a given msr-file, extracts the maxLH (or chisq)
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value from stdout, and compares it against an expected reference value.
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Returns exit code 1 if the relative deviation exceeds the tolerance.
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Usage:
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maxLH_check.py <musrfit> <msr-file> <expected_value> [tolerance]
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"""
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import subprocess
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import sys
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import re
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def main():
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if len(sys.argv) < 4 or len(sys.argv) > 5:
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print(f"usage: {sys.argv[0]} <musrfit> <msr-file> <expected> [tolerance]")
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return 1
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musrfit = sys.argv[1]
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msr_file = sys.argv[2]
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expected = float(sys.argv[3])
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tol = float(sys.argv[4]) if len(sys.argv) == 5 else 1e-4
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# run musrfit -c
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result = subprocess.run([musrfit, "-c", msr_file],
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capture_output=True, text=True)
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if result.returncode != 0:
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print(f"**ERROR** musrfit returned exit code {result.returncode}")
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print(result.stdout + result.stderr)
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return 1
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# extract maxLH or chisq from stdout
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match = re.search(r">>\s+(maxLH|chisq)\s*=\s*([0-9.eE+-]+)", result.stdout)
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if not match:
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print("**ERROR** could not extract maxLH or chisq from output:")
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print(result.stdout)
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return 1
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label = match.group(1)
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value = float(match.group(2))
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rel_dev = abs((value - expected) / expected)
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if rel_dev > tol:
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print(f"FAIL: {label} = {value}, expected = {expected}, "
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f"rel. deviation = {rel_dev:.6e} > {tol:.6e}")
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return 1
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print(f"PASS: {label} = {value}, expected = {expected}, "
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f"rel. deviation = {rel_dev:.6e} <= {tol:.6e}")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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