Add test suite

tests/test_core.py

@@ -0,0 +1,78 @@
+import pytest
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+
+from promptforge.core.prompt import Prompt, PromptVariable, VariableType
+from promptforge.core.template import TemplateEngine
+from promptforge.core.exceptions import MissingVariableError, InvalidPromptError
+
+
+class TestPrompt:
+    def test_prompt_creation(self):
+        prompt = Prompt(
+            name="Test Prompt",
+            description="A test prompt",
+            content="Hello {{name}}!"
+        )
+        assert prompt.name == "Test Prompt"
+        assert prompt.version == "1.0.0"
+        assert prompt.content == "Hello {{name}}!"
+
+    def test_prompt_from_yaml(self):
+        yaml_content = """---
+name: YAML Prompt
+description: Loaded from YAML
+version: "2.0.0"
+---
+Hello {{name}}
+"""
+        prompt = Prompt.from_yaml(yaml_content)
+        assert prompt.name == "YAML Prompt"
+        assert prompt.version == "2.0.0"
+        assert prompt.content == "Hello {{name}}"
+
+    def test_prompt_to_yaml(self):
+        prompt = Prompt(
+            name="Test Prompt",
+            content="Hello {{name}}"
+        )
+        yaml_output = prompt.to_yaml()
+        assert "---" in yaml_output
+        assert "name: Test Prompt" in yaml_output
+        assert "Hello {{name}}" in yaml_output
+
+    def test_prompt_save_and_load(self, tmp_path):
+        prompt = Prompt(
+            name="Save Test",
+            content="Content: {{text}}"
+        )
+        filepath = prompt.save(tmp_path)
+        assert filepath.exists()
+
+        loaded = Prompt.load(filepath)
+        assert loaded.name == "Save Test"
+
+
+class TestTemplateEngine:
+    def test_render_simple(self):
+        engine = TemplateEngine()
+        result = engine.render("Hello {{name}}!", {"name": "World"})
+        assert result == "Hello World!"
+
+    def test_render_missing_variable(self):
+        engine = TemplateEngine()
+        with pytest.raises(MissingVariableError):
+            engine.render("Hello {{name}}!", {})
+
+    def test_get_variables(self):
+        engine = TemplateEngine()
+        vars = engine.get_variables("Hello {{name}}, your score is {{score}}")
+        assert "name" in vars
+        assert "score" in vars
+
+    def test_boolean_conversion(self):
+        engine = TemplateEngine()
+        result = engine.render("Enabled: {{enabled}}", {"enabled": "true"})
+        assert result == "Enabled: True"