mirror of
https://github.com/hwchase17/langchain
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110 lines
2.7 KiB
Python
110 lines
2.7 KiB
Python
"""Test LLM Bash functionality."""
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import sys
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import pytest
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from langchain.schema import OutputParserException
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from langchain_experimental.llm_bash.base import LLMBashChain
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from langchain_experimental.llm_bash.prompt import _PROMPT_TEMPLATE, BashOutputParser
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from tests.unit_tests.fake_llm import FakeLLM
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_SAMPLE_CODE = """
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Unrelated text
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```bash
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echo hello
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```
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Unrelated text
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"""
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_SAMPLE_CODE_2_LINES = """
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Unrelated text
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```bash
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echo hello
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echo world
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```
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Unrelated text
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"""
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@pytest.fixture
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def output_parser() -> BashOutputParser:
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"""Output parser for testing."""
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return BashOutputParser()
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@pytest.mark.skipif(
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sys.platform.startswith("win"), reason="Test not supported on Windows"
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)
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def test_simple_question() -> None:
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"""Test simple question that should not need python."""
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question = "Please write a bash script that prints 'Hello World' to the console."
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prompt = _PROMPT_TEMPLATE.format(question=question)
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queries = {prompt: "```bash\nexpr 1 + 1\n```"}
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fake_llm = FakeLLM(queries=queries)
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fake_llm_bash_chain = LLMBashChain.from_llm(fake_llm, input_key="q", output_key="a")
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output = fake_llm_bash_chain.run(question)
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assert output == "2\n"
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def test_get_code(output_parser: BashOutputParser) -> None:
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"""Test the parser."""
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code_lines = output_parser.parse(_SAMPLE_CODE)
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code = [c for c in code_lines if c.strip()]
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assert code == code_lines
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assert code == ["echo hello"]
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code_lines = output_parser.parse(_SAMPLE_CODE + _SAMPLE_CODE_2_LINES)
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assert code_lines == ["echo hello", "echo hello", "echo world"]
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def test_parsing_error() -> None:
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"""Test that LLM Output without a bash block raises an exce"""
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question = "Please echo 'hello world' to the terminal."
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prompt = _PROMPT_TEMPLATE.format(question=question)
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queries = {
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prompt: """
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```text
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echo 'hello world'
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```
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"""
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}
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fake_llm = FakeLLM(queries=queries)
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fake_llm_bash_chain = LLMBashChain.from_llm(fake_llm, input_key="q", output_key="a")
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with pytest.raises(OutputParserException):
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fake_llm_bash_chain.run(question)
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def test_get_code_lines_mixed_blocks(output_parser: BashOutputParser) -> None:
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text = """
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Unrelated text
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```bash
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echo hello
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ls && pwd && ls
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```
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```python
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print("hello")
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```
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```bash
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echo goodbye
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```
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"""
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code_lines = output_parser.parse(text)
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assert code_lines == ["echo hello", "ls && pwd && ls", "echo goodbye"]
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def test_get_code_lines_simple_nested_ticks(output_parser: BashOutputParser) -> None:
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"""Test that backticks w/o a newline are ignored."""
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text = """
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Unrelated text
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```bash
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echo hello
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echo "```bash is in this string```"
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```
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"""
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code_lines = output_parser.parse(text)
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assert code_lines == ["echo hello", 'echo "```bash is in this string```"']
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