Parameterized Tests in Swift

generate_tests.py

import sys
import re
import glob
import os

files = []
for arg in sys.argv[1:]:
    if os.path.isdir(arg):
        arg += "/*.swift"

    for gfile in glob.glob(arg):
        if gfile[-6:] == '.swift':
            files.append(gfile)

for file in files:
    print(file)

    dividing_line = '// DO NOT EDIT BELOW THIS LINE\n'
    generated = '\n' + dividing_line + '\n'

    with open(file) as f:
        lines = f.readlines()

        className, tests = '', []
        for line in lines:
            search = re.search(r'^\s*class\s+(\w+)', line)
            if search:
                className = search.group(1)
                generated += 'extension %s {\n' % className

            search = re.search(r'^\s*// params: \s*(\w*)(.*)', line)
            if search:
                tests.append([search.group(1), search.group(2)])

            search = re.search(r'^\s*func (test\w+)', line)
            if search:
                functionName = search.group(1)
                for i, test in enumerate(tests):
                    if not test[0]:
                        test[0] = i
                    generated += '    func %s%s() {\n' % (functionName, test[0])
                    generated += '        %s%s\n' % (functionName, test[1].strip())
                    generated += '    }\n\n'
                className, tests = '', []

    generated += '}\n'

    try:
        lines = lines[0:lines.index(dividing_line) - 1]
    except:
        pass

    lines.append(generated)
    with open(file, "w") as f:
        f.write(''.join(lines))