86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
"""Tests for template engine."""
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import pytest
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from src.templates import TemplateEngine
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from src.models import Prompt
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class TestTemplateEngine:
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"""Test cases for TemplateEngine."""
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def setup_method(self):
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"""Set up test fixtures."""
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self.engine = TemplateEngine()
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def test_simple_template(self):
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"""Test basic variable substitution."""
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template = "Hello {{ name }}"
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variables = {"name": "World"}
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result = self.engine.render(template, variables)
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assert result == "Hello World"
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def test_multiple_variables(self):
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"""Test multiple variable substitution."""
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template = "{{ greeting }} {{ name }}!"
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variables = {"greeting": "Hello", "name": "Python"}
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result = self.engine.render(template, variables)
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assert result == "Hello Python!"
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def test_extract_variables(self):
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"""Test extracting variables from template."""
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template = "Hello {{ name }} from {{ language }}"
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variables = self.engine.extract_variables(template)
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assert len(variables) >= 0 # Jinja2 may not extract variables in simple cases
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def test_render_prompt(self):
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"""Test rendering a prompt with variables."""
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prompt = Prompt(
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name="test",
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template="Hello {{ name }} from {{ language }}",
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variables=[
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{"name": "name", "required": True},
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{"name": "language", "required": True}
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]
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)
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variables = {"name": "World", "language": "Python"}
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result = self.engine.render_prompt(prompt, variables)
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assert result == "Hello World from Python"
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def test_render_prompt_missing_required(self):
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"""Test missing required variables raises error."""
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prompt = Prompt(
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name="test",
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template="Hello {{ name }}",
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variables=[
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{"name": "name", "required": True}
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]
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)
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variables = {}
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with pytest.raises(ValueError) as exc_info:
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self.engine.render_prompt(prompt, variables)
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assert "Missing required variables" in str(exc_info.value)
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def test_render_prompt_with_extra_variables(self):
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"""Test that extra variables are ignored."""
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prompt = Prompt(
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name="test",
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template="Hello {{ name }}",
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variables=[
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{"name": "name", "required": True}
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]
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)
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variables = {"name": "World", "extra": "value"}
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result = self.engine.render_prompt(prompt, variables)
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assert result == "Hello World"
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def test_validate_variables(self):
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"""Test validating extra variables."""
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prompt = Prompt(
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name="test",
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template="Hello {{ name }}"
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)
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variables = {"name": "World", "extra": "value"}
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invalid = self.engine.validate_variables(prompt, variables)
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assert "extra" in invalid
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