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import os
import tempfile
import time
from openhands.core.logger import openhands_logger as logger
from openhands.events.action import CmdRunAction
from openhands.runtime.utils.bash import BashCommandStatus, BashSession
def test_session_initialization():
# Test with custom working directory
with tempfile.TemporaryDirectory() as temp_dir:
session = BashSession(work_dir=temp_dir)
session.initialize()
obs = session.execute(CmdRunAction('pwd'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert temp_dir in obs.content
assert '[The command completed with exit code 0.]' in obs.metadata.suffix
session.close()
# Test with custom username
session = BashSession(work_dir=os.getcwd(), username='nobody')
session.initialize()
assert 'openhands-nobody' in session.session.name
session.close()
def test_cwd_property(tmp_path):
session = BashSession(work_dir=tmp_path)
session.initialize()
# Change directory and verify pwd updates
random_dir = tmp_path / 'random'
random_dir.mkdir()
session.execute(CmdRunAction(f'cd {random_dir}'))
assert session.cwd == str(random_dir)
session.close()
def test_basic_command():
session = BashSession(work_dir=os.getcwd())
session.initialize()
# Test simple command
obs = session.execute(CmdRunAction("echo 'hello world'"))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'hello world' in obs.content
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
assert obs.metadata.prefix == ''
assert obs.metadata.exit_code == 0
assert session.prev_status == BashCommandStatus.COMPLETED
# Test command with error
obs = session.execute(CmdRunAction('nonexistent_command'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.metadata.exit_code == 127
assert 'nonexistent_command: command not found' in obs.content
assert obs.metadata.suffix == '\n[The command completed with exit code 127.]'
assert obs.metadata.prefix == ''
assert session.prev_status == BashCommandStatus.COMPLETED
# Test multiple commands in sequence
obs = session.execute(CmdRunAction('echo "first" && echo "second" && echo "third"'))
assert 'first' in obs.content
assert 'second' in obs.content
assert 'third' in obs.content
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
assert obs.metadata.prefix == ''
assert obs.metadata.exit_code == 0
assert session.prev_status == BashCommandStatus.COMPLETED
session.close()
def test_long_running_command_follow_by_execute():
session = BashSession(work_dir=os.getcwd(), no_change_timeout_seconds=2)
session.initialize()
# Test command that produces output slowly
obs = session.execute(
CmdRunAction('for i in {1..3}; do echo $i; sleep 3; done', blocking=False)
)
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '1' in obs.content # First number should appear before timeout
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
assert obs.metadata.suffix == (
'\n[The command has no new output after 2 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == ''
# Continue watching output
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '2' in obs.content
assert obs.metadata.prefix == '[Below is the output of the previous command.]\n'
assert obs.metadata.suffix == (
'\n[The command has no new output after 2 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
# Test command that produces no output
obs = session.execute(CmdRunAction('sleep 15'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '3' not in obs.content
assert obs.metadata.prefix == '[Below is the output of the previous command.]\n'
assert 'The previous command is still running' in obs.metadata.suffix
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
time.sleep(3)
# Run it again, this time it should produce output
obs = session.execute(CmdRunAction('sleep 15'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '3' in obs.content
assert obs.metadata.prefix == '[Below is the output of the previous command.]\n'
assert 'The previous command is still running' in obs.metadata.suffix
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
session.close()
def test_interactive_command():
session = BashSession(work_dir=os.getcwd(), no_change_timeout_seconds=3)
session.initialize()
# Test interactive command with blocking=True
obs = session.execute(
CmdRunAction(
'read -p \'Enter name: \' name && echo "Hello $name"',
)
)
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Enter name:' in obs.content
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
assert obs.metadata.suffix == (
'\n[The command has no new output after 3 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == ''
# Send input
obs = session.execute(CmdRunAction('John', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Hello John' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
assert obs.metadata.prefix == ''
assert session.prev_status == BashCommandStatus.COMPLETED
# Test multiline command input
obs = session.execute(CmdRunAction('cat << EOF'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.metadata.exit_code == -1
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
assert obs.metadata.suffix == (
'\n[The command has no new output after 3 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == ''
obs = session.execute(CmdRunAction('line 1', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.metadata.exit_code == -1
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
assert obs.metadata.suffix == (
'\n[The command has no new output after 3 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == '[Below is the output of the previous command.]\n'
obs = session.execute(CmdRunAction('line 2', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.metadata.exit_code == -1
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
assert obs.metadata.suffix == (
'\n[The command has no new output after 3 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == '[Below is the output of the previous command.]\n'
obs = session.execute(CmdRunAction('EOF', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'line 1' in obs.content and 'line 2' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
assert obs.metadata.prefix == ''
session.close()
def test_ctrl_c():
session = BashSession(work_dir=os.getcwd(), no_change_timeout_seconds=2)
session.initialize()
# Start infinite loop
obs = session.execute(
CmdRunAction("while true; do echo 'looping'; sleep 3; done"),
)
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'looping' in obs.content
assert obs.metadata.suffix == (
'\n[The command has no new output after 2 seconds. '
"You may wait longer to see additional output by sending empty command '', "
'send other commands to interact with the current process, '
'or send keys to interrupt/kill the command.]'
)
assert obs.metadata.prefix == ''
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
# Send Ctrl+C
obs = session.execute(CmdRunAction('C-c', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.metadata.exit_code == 130 # Standard exit code for Ctrl+C
assert (
obs.metadata.suffix
== '\n[The command completed with exit code 130. CTRL+C was sent.]'
)
assert obs.metadata.prefix == ''
assert session.prev_status == BashCommandStatus.COMPLETED
session.close()
def test_empty_command_errors():
session = BashSession(work_dir=os.getcwd())
session.initialize()
# Test empty command without previous command
obs = session.execute(CmdRunAction(''))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.content == 'ERROR: No previous running command to retrieve logs from.'
assert obs.metadata.exit_code == -1
assert obs.metadata.prefix == ''
assert obs.metadata.suffix == ''
assert session.prev_status is None
session.close()
def test_command_output_continuation():
session = BashSession(work_dir=os.getcwd(), no_change_timeout_seconds=2)
session.initialize()
# Start a command that produces output slowly
obs = session.execute(CmdRunAction('for i in {1..5}; do echo $i; sleep 3; done'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert obs.content.strip() == '1'
assert obs.metadata.prefix == ''
assert '[The command has no new output after 2 seconds.' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '[Below is the output of the previous command.]' in obs.metadata.prefix
assert obs.content.strip() == '2'
assert '[The command has no new output after 2 seconds.' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '[Below is the output of the previous command.]' in obs.metadata.prefix
assert obs.content.strip() == '3'
assert '[The command has no new output after 2 seconds.' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '[Below is the output of the previous command.]' in obs.metadata.prefix
assert obs.content.strip() == '4'
assert '[The command has no new output after 2 seconds.' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '[Below is the output of the previous command.]' in obs.metadata.prefix
assert obs.content.strip() == '5'
assert '[The command has no new output after 2 seconds.' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
obs = session.execute(CmdRunAction('', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert '[The command completed with exit code 0.]' in obs.metadata.suffix
assert session.prev_status == BashCommandStatus.COMPLETED
session.close()
def test_long_output():
session = BashSession(work_dir=os.getcwd())
session.initialize()
# Generate a long output that may exceed buffer size
obs = session.execute(CmdRunAction('for i in {1..5000}; do echo "Line $i"; done'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Line 1' in obs.content
assert 'Line 5000' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.prefix == ''
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
session.close()
def test_long_output_exceed_history_limit():
session = BashSession(work_dir=os.getcwd())
session.initialize()
# Generate a long output that may exceed buffer size
obs = session.execute(CmdRunAction('for i in {1..50000}; do echo "Line $i"; done'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Previous command outputs are truncated' in obs.metadata.prefix
assert 'Line 40000' in obs.content
assert 'Line 50000' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
session.close()
def test_multiline_command():
session = BashSession(work_dir=os.getcwd())
session.initialize()
# Test multiline command with PS2 prompt disabled
obs = session.execute(
CmdRunAction("""if true; then
echo "inside if"
fi""")
)
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'inside if' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.prefix == ''
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
session.close()
def test_python_interactive_input():
session = BashSession(work_dir=os.getcwd(), no_change_timeout_seconds=2)
session.initialize()
# Test Python program that asks for input - properly escaped for bash
python_script = """name = input('Enter your name: '); age = input('Enter your age: '); print(f'Hello {name}, you are {age} years old')"""
# Start Python with the interactive script
obs = session.execute(CmdRunAction(f'python3 -c "{python_script}"'))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Enter your name:' in obs.content
assert obs.metadata.exit_code == -1 # -1 indicates command is still running
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
# Send first input (name)
obs = session.execute(CmdRunAction('Alice', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Enter your age:' in obs.content
assert obs.metadata.exit_code == -1
assert session.prev_status == BashCommandStatus.NO_CHANGE_TIMEOUT
# Send second input (age)
obs = session.execute(CmdRunAction('25', is_input=True))
logger.info(obs, extra={'msg_type': 'OBSERVATION'})
assert 'Hello Alice, you are 25 years old' in obs.content
assert obs.metadata.exit_code == 0
assert obs.metadata.suffix == '\n[The command completed with exit code 0.]'
assert session.prev_status == BashCommandStatus.COMPLETED
session.close()
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