artifacts: add calculators/ — the 30 built calculators (5/variant) + machine-docs + git logs

calculators/builder-adversary-min/run-02/calc/test_lexer.py

@@ -0,0 +1,86 @@
+import unittest
+from calc.lexer import tokenize, Token, LexError
+
+
+def kinds(src):
+    return [t.kind for t in tokenize(src)]
+
+
+class TestNumbers(unittest.TestCase):
+    def test_integer(self):
+        tokens = tokenize("42")
+        self.assertEqual(tokens, [Token('NUMBER', 42), Token('EOF', None)])
+
+    def test_float(self):
+        tokens = tokenize("3.14")
+        self.assertEqual(tokens[0].kind, 'NUMBER')
+        self.assertAlmostEqual(tokens[0].value, 3.14)
+        self.assertEqual(tokens[1].kind, 'EOF')
+
+    def test_leading_dot(self):
+        tokens = tokenize(".5")
+        self.assertEqual(tokens[0].kind, 'NUMBER')
+        self.assertAlmostEqual(tokens[0].value, 0.5)
+
+    def test_trailing_dot(self):
+        tokens = tokenize("10.")
+        self.assertEqual(tokens[0].kind, 'NUMBER')
+        self.assertAlmostEqual(tokens[0].value, 10.0)
+
+
+class TestOperatorsAndParens(unittest.TestCase):
+    def test_each_operator(self):
+        self.assertEqual(kinds("+"), ['PLUS', 'EOF'])
+        self.assertEqual(kinds("-"), ['MINUS', 'EOF'])
+        self.assertEqual(kinds("*"), ['STAR', 'EOF'])
+        self.assertEqual(kinds("/"), ['SLASH', 'EOF'])
+        self.assertEqual(kinds("("), ['LPAREN', 'EOF'])
+        self.assertEqual(kinds(")"), ['RPAREN', 'EOF'])
+
+    def test_expression_kinds(self):
+        self.assertEqual(kinds("1+2*3"), ['NUMBER', 'PLUS', 'NUMBER', 'STAR', 'NUMBER', 'EOF'])
+
+
+class TestWhitespace(unittest.TestCase):
+    def test_spaces(self):
+        tokens = tokenize("  12  +  3 ")
+        self.assertEqual([t.kind for t in tokens], ['NUMBER', 'PLUS', 'NUMBER', 'EOF'])
+        self.assertEqual(tokens[0].value, 12)
+        self.assertEqual(tokens[2].value, 3)
+
+    def test_tabs(self):
+        tokens = tokenize("1\t+\t2")
+        self.assertEqual([t.kind for t in tokens], ['NUMBER', 'PLUS', 'NUMBER', 'EOF'])
+
+
+class TestErrors(unittest.TestCase):
+    def test_at_sign_raises_lex_error(self):
+        with self.assertRaises(LexError) as ctx:
+            tokenize("1 @ 2")
+        msg = str(ctx.exception)
+        self.assertIn('@', msg)
+        self.assertIn('2', msg)  # position 2
+
+    def test_dollar_raises_lex_error(self):
+        with self.assertRaises(LexError):
+            tokenize("$")
+
+    def test_letter_raises_lex_error(self):
+        with self.assertRaises(LexError):
+            tokenize("abc")
+
+
+class TestComplex(unittest.TestCase):
+    def test_float_expr_with_parens(self):
+        tokens = tokenize("3.5*(1-2)")
+        self.assertEqual(
+            [t.kind for t in tokens],
+            ['NUMBER', 'STAR', 'LPAREN', 'NUMBER', 'MINUS', 'NUMBER', 'RPAREN', 'EOF']
+        )
+        self.assertAlmostEqual(tokens[0].value, 3.5)
+        self.assertEqual(tokens[3].value, 1)
+        self.assertEqual(tokens[5].value, 2)
+
+
+if __name__ == '__main__':
+    unittest.main()