fix: remove unused imports from test files

.tests/test_explainer.py

@@ -0,0 +1,81 @@
+"""Tests for ShellGenius explainer module."""
+
+from shellgenius.explainer import ShellExplainer, explain_script
+
+
+class TestShellExplainer:
+    """Test shell script explainer."""
+
+    def test_explainer_initialization(self):
+        """Test explainer creates properly."""
+        explainer = ShellExplainer()
+        assert explainer.parser is not None
+
+    def test_basic_explain(self):
+        """Test basic script explanation."""
+        script = "#!/bin/bash
+echo \"Hello, World!\"
+ls -la
+"
+        result = explain_script(script, detailed=False)
+
+        assert result.shell_type == "bash"
+        assert len(result.line_explanations) > 0
+        assert result.overall_purpose != ""
+
+    def test_detect_keywords(self):
+        """Test keyword detection."""
+        explainer = ShellExplainer()
+
+        if_explanation = explainer._explain_line_basic("if [ -f file ]; then")
+        assert "conditional" in if_explanation.lower()
+
+        for_explanation = explainer._explain_line_basic("for i in 1 2 3; do")
+        assert "loop" in for_explanation.lower()
+
+    def test_common_patterns(self):
+        """Test common pattern detection."""
+        explainer = ShellExplainer()
+
+        shebang_explanation = explainer._explain_line_basic("#!/bin/bash")
+        assert "shebang" in shebang_explanation.lower()
+
+        pipe_explanation = explainer._explain_line_basic("cat file | grep pattern")
+        assert "pipe" in pipe_explanation.lower()
+
+    def test_generate_summary(self):
+        """Test summary generation."""
+        explainer = ShellExplainer()
+
+        from shellgenius.explainer import LineExplanation
+
+        explanations = [
+            LineExplanation(1, "cmd1", "command", True),
+            LineExplanation(2, "cmd2", "command", True),
+            LineExplanation(3, "function test()", "function", True),
+        ]
+
+        summary = explainer._generate_summary(explanations, "bash")
+        assert "bash" in summary
+        assert "function" in summary.lower()
+
+    def test_detect_purpose(self):
+        """Test purpose detection."""
+        explainer = ShellExplainer()
+
+        from shellgenius.explainer import LineExplanation
+
+        git_explanations = [
+            LineExplanation(1, "git status", "command", True),
+            LineExplanation(2, "git commit -m", "command", True),
+        ]
+
+        purpose = explainer._detect_purpose(git_explanations)
+        assert "Git" in purpose
+
+    def test_explain_script_function(self):
+        """Test convenience function."""
+        result = explain_script("echo test", detailed=False)
+        assert result is not None
+        assert hasattr(result, "shell_type")
+        assert hasattr(result, "line_explanations")