test.py

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"""
 
A test for comparing the dose from a "stepped source" (i.e. superposition mode
with variable activity) with previous calculations made when egs_brachy was in
a known good state.
 
"""
import math
import os
import re
 
from eb_tests.utils import (compare_3ddose_files, doses_approx_equal,
                            extract_all_doses, read3ddose)
 
EGSINP = "stepped.egsinp"
TIME_LIMIT_S_PER_MHZ = 1000/2993. # s / MHz
NCOMPARE = 20
 
def get_n_highest_dose_pairs(dose1, dose2, n=NCOMPARE):
    return sorted(zip(dose1, dose2))[-NCOMPARE:]
 
def compare_results(egslst, inp_name):
 
    gold_standard = read3ddose(os.path.join(os.path.dirname(os.path.abspath(__file__)), "gold_standard.3ddose"))
    run_doses = read3ddose(inp_name+".phantom.3ddose")
 
    dose_pairs = get_n_highest_dose_pairs(gold_standard['doses'], run_doses['doses'])
 
    dose_diff = [abs((a-b)/a) for a, b in dose_pairs]
 
    doses_close = max(dose_diff) < 0.01
 
    rd, gs =  list(zip(*dose_pairs))
    return doses_close, rd, gs