simple-dag-unit-test.py

import os
import json

def parse_modules(modules_file):
    modules = []
    with open(modules_file, 'r') as file:
        return json.loads(file.read())

def parse_unit_test_command(modules):
    command = "./gradlew "

    for module in modules:
        command += module + ":testDebug"

        command += " "

    return command

def dag_unit_tests():
    """Runs unit tests only in specific modules"""
    modules = parse_modules("./affected-modules.json")

    if len(modules) == 0:
        print("No modules. No unit test need to be run")
    else:
        print(parse_unit_test_command(modules))
        # result = os.system(parse_unit_test_command(modules))
        result = 0
        if result != 0:
            raise(Exception("unit tests failed"))

dag_unit_tests()