"""
High-value pure logic tests for benchmarks/runners.py.

Focuses on format_query() and other pure logic elements.
"""

from local_deep_research.benchmarks.runners import format_query
from local_deep_research.benchmarks.templates import BROWSECOMP_QUERY_TEMPLATE


class TestFormatQuerySimpleQA:
    """Tests for format_query with simpleqa dataset type."""

    def test_simpleqa_returns_question_unchanged(self):
        question = "What is the capital of France?"
        result = format_query(question, "simpleqa")
        assert result == question

    def test_simpleqa_preserves_whitespace(self):
        question = "  leading and trailing spaces  "
        result = format_query(question, "simpleqa")
        assert result == question

    def test_simpleqa_empty_string(self):
        result = format_query("", "simpleqa")
        assert result == ""

    def test_simpleqa_multiline_question(self):
        question = "Line one\nLine two\nLine three"
        result = format_query(question, "simpleqa")
        assert result == question

    def test_simpleqa_is_default_dataset_type(self):
        question = "What year was Python created?"
        result = format_query(question)
        assert result == question


class TestFormatQueryBrowseComp:
    """Tests for format_query with browsecomp dataset type."""

    def test_browsecomp_applies_template(self):
        question = "Find the author of this article."
        result = format_query(question, "browsecomp")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_browsecomp_case_insensitive_lowercase(self):
        question = "Some question"
        result = format_query(question, "browsecomp")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_browsecomp_case_insensitive_uppercase(self):
        question = "Some question"
        result = format_query(question, "BROWSECOMP")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_browsecomp_case_insensitive_mixed(self):
        question = "Some question"
        result = format_query(question, "BrowseComp")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_browsecomp_case_insensitive_random_casing(self):
        question = "Some question"
        result = format_query(question, "bRoWsEcOmP")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_browsecomp_empty_question(self):
        result = format_query("", "browsecomp")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question="")
        assert result == expected

    def test_browsecomp_result_contains_question_text(self):
        question = "Who wrote the first web browser?"
        result = format_query(question, "browsecomp")
        assert question in result

    def test_browsecomp_result_contains_format_instructions(self):
        question = "Test question"
        result = format_query(question, "browsecomp")
        assert "Exact Answer:" in result
        assert "Confidence:" in result
        assert "Explanation:" in result

    def test_browsecomp_result_differs_from_raw_question(self):
        question = "A simple question?"
        result = format_query(question, "browsecomp")
        assert result != question
        assert len(result) > len(question)


class TestFormatQueryUnknownDatasetTypes:
    """Tests for format_query with unknown/other dataset types."""

    def test_unknown_type_returns_question_unchanged(self):
        question = "What is 2+2?"
        result = format_query(question, "unknown_dataset")
        assert result == question

    def test_xbench_deepsearch_returns_question_unchanged(self):
        question = "Complex research question"
        result = format_query(question, "xbench_deepsearch")
        assert result == question

    def test_empty_dataset_type_returns_question_unchanged(self):
        """Empty string dataset type is not 'browsecomp', so returns unchanged."""
        question = "Some question"
        result = format_query(question, "")
        assert result == question

    def test_browsecomp_prefix_does_not_match(self):
        """Only exact match (case-insensitive) should trigger template."""
        question = "Some question"
        result = format_query(question, "browsecomp_v2")
        assert result == question

    def test_browsecomp_with_extra_spaces_does_not_match(self):
        question = "Some question"
        result = format_query(question, " browsecomp ")
        assert result == question


class TestFormatQuerySpecialCharacters:
    """Tests for format_query with special characters in questions."""

    def test_question_with_curly_braces(self):
        """Curly braces in question should not break template formatting."""
        question = "What is {x} in the equation?"
        # For simpleqa, returned as-is
        result = format_query(question, "simpleqa")
        assert result == question

    def test_browsecomp_question_with_unicode(self):
        question = "Qu'est-ce que c'est? Aeoeue"
        result = format_query(question, "browsecomp")
        expected = BROWSECOMP_QUERY_TEMPLATE.format(question=question)
        assert result == expected

    def test_question_with_newlines_browsecomp(self):
        question = "First part\nSecond part"
        result = format_query(question, "browsecomp")
        assert "First part\nSecond part" in result
        assert "Exact Answer:" in result