haystack/test/preview/components/generators/test_prompt_builder.py

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import pytest
from haystack.preview.components.generators.prompt_builder import PromptBuilder
@pytest.mark.unit
def test_init():
builder = PromptBuilder(template="This is a {{ variable }}")
assert builder._template_string == "This is a {{ variable }}"
@pytest.mark.unit
def test_to_dict():
builder = PromptBuilder(template="This is a {{ variable }}")
res = builder.to_dict()
assert res == {"type": "PromptBuilder", "init_parameters": {"template": "This is a {{ variable }}"}}
@pytest.mark.unit
def test_from_dict():
data = {"type": "PromptBuilder", "init_parameters": {"template": "This is a {{ variable }}"}}
builder = PromptBuilder.from_dict(data)
builder._template_string == "This is a {{ variable }}"
@pytest.mark.unit
def test_run():
builder = PromptBuilder(template="This is a {{ variable }}")
res = builder.run(variable="test")
assert res == {"prompt": "This is a test"}
@pytest.mark.unit
def test_run_without_input():
builder = PromptBuilder(template="This is a template without input")
res = builder.run()
assert res == {"prompt": "This is a template without input"}
@pytest.mark.unit
def test_run_with_missing_input():
builder = PromptBuilder(template="This is a {{ variable }}")
res = builder.run()
assert res == {"prompt": "This is a "}