from subprocess import Popen, PIPE, STDOUT
process = Popen(["./target/debug/cargo-wgsl", "--server"],
stdout=PIPE, stdin=PIPE, stderr=STDOUT)
event = """{"event":{"ValidatePath": "./tests/test.wgsl"}}"""
p_stdout = process.communicate(input=str.encode(event))[0]
print(p_stdout.decode())