Refactored sheerka class: splitted to use sub handlers. Refactored unit tests to use classes.

2020-01-22 17:49:28 +01:00
parent 821614a6c4
commit c489a38ebc
120 changed files with 7947 additions and 8190 deletions
@@ -0,0 +1,141 @@
+import pytest
+from core.tokenizer import Tokenizer, Token, TokenKind, LexerError, Keywords
+
+
+def test_i_can_tokenize():
+    source = "+*-/{}[]()    ,;:.?\n\n\r\r\r\nidentifier_0\t  \t10.15 10 'string\n' \"another string\"=|&<>c:name:"
+    source += "$£€!_identifier°~_^\\`#"
+    tokens = list(Tokenizer(source))
+    assert tokens[0] == Token(TokenKind.PLUS, "+", 0, 1, 1)
+    assert tokens[1] == Token(TokenKind.STAR, "*", 1, 1, 2)
+    assert tokens[2] == Token(TokenKind.MINUS, "-", 2, 1, 3)
+    assert tokens[3] == Token(TokenKind.SLASH, "/", 3, 1, 4)
+    assert tokens[4] == Token(TokenKind.LBRACE, "{", 4, 1, 5)
+    assert tokens[5] == Token(TokenKind.RBRACE, "}", 5, 1, 6)
+    assert tokens[6] == Token(TokenKind.LBRACKET, "[", 6, 1, 7)
+    assert tokens[7] == Token(TokenKind.RBRACKET, "]", 7, 1, 8)
+    assert tokens[8] == Token(TokenKind.LPAR, "(", 8, 1, 9)
+    assert tokens[9] == Token(TokenKind.RPAR, ")", 9, 1, 10)
+    assert tokens[10] == Token(TokenKind.WHITESPACE, "    ", 10, 1, 11)
+    assert tokens[11] == Token(TokenKind.COMMA, ",", 14, 1, 15)
+    assert tokens[12] == Token(TokenKind.SEMICOLON, ";", 15, 1, 16)
+    assert tokens[13] == Token(TokenKind.COLON, ":", 16, 1, 17)
+    assert tokens[14] == Token(TokenKind.DOT, ".", 17, 1, 18)
+    assert tokens[15] == Token(TokenKind.QMARK, "?", 18, 1, 19)
+    assert tokens[16] == Token(TokenKind.NEWLINE, "\n", 19, 1, 20)
+    assert tokens[17] == Token(TokenKind.NEWLINE, "\n\r", 20, 2, 1)
+    assert tokens[18] == Token(TokenKind.NEWLINE, "\r", 22, 3, 1)
+    assert tokens[19] == Token(TokenKind.NEWLINE, "\r\n", 23, 4, 1)
+    assert tokens[20] == Token(TokenKind.IDENTIFIER, "identifier_0", 25, 5, 1)
+    assert tokens[21] == Token(TokenKind.WHITESPACE, "\t  \t", 37, 5, 13)
+    assert tokens[22] == Token(TokenKind.NUMBER, "10.15", 41, 5, 17)
+    assert tokens[23] == Token(TokenKind.WHITESPACE, " ", 46, 5, 22)
+    assert tokens[24] == Token(TokenKind.NUMBER, "10", 47, 5, 23)
+    assert tokens[25] == Token(TokenKind.WHITESPACE, " ", 49, 5, 25)
+    assert tokens[26] == Token(TokenKind.STRING, "'string\n'", 50, 5, 26)
+    assert tokens[27] == Token(TokenKind.WHITESPACE, " ", 59, 6, 1)
+    assert tokens[28] == Token(TokenKind.STRING, '"another string"', 60, 6, 2)
+    assert tokens[29] == Token(TokenKind.EQUALS, '=', 76, 6, 18)
+    assert tokens[30] == Token(TokenKind.VBAR, '|', 77, 6, 19)
+    assert tokens[31] == Token(TokenKind.AMPER, '&', 78, 6, 20)
+    assert tokens[32] == Token(TokenKind.LESS, '<', 79, 6, 21)
+    assert tokens[33] == Token(TokenKind.GREATER, '>', 80, 6, 22)
+    assert tokens[34] == Token(TokenKind.CONCEPT, 'name', 81, 6, 23)
+    assert tokens[35] == Token(TokenKind.DOLLAR, '$', 88, 6, 30)
+    assert tokens[36] == Token(TokenKind.STERLING, '£', 89, 6, 31)
+    assert tokens[37] == Token(TokenKind.EURO, '€', 90, 6, 32)
+    assert tokens[38] == Token(TokenKind.EMARK, '!', 91, 6, 33)
+    assert tokens[39] == Token(TokenKind.IDENTIFIER, '_identifier', 92, 6, 34)
+    assert tokens[40] == Token(TokenKind.DEGREE, '°', 103, 6, 45)
+    assert tokens[41] == Token(TokenKind.TILDE, '~', 104, 6, 46)
+    assert tokens[42] == Token(TokenKind.UNDERSCORE, '_', 105, 6, 47)
+    assert tokens[43] == Token(TokenKind.CARAT, '^', 106, 6, 48)
+    assert tokens[44] == Token(TokenKind.BACK_SLASH, '\\', 107, 6, 49)
+    assert tokens[45] == Token(TokenKind.BACK_QUOTE, '`', 108, 6, 50)
+    assert tokens[46] == Token(TokenKind.HASH, '#', 109, 6, 51)
+
+    assert tokens[47] == Token(TokenKind.EOF, '', 110, 6, 52)
+
+
+@pytest.mark.parametrize("text, expected", [
+    ("_ident", True),
+    ("ident", True),
+    ("ident123", True),
+    ("ident_123", True),
+    ("ident-like-this", True),
+    ("àèùéû", True),
+    ("011254", False),
+    ("0abcd", False),
+    ("-abcd", False)
+])
+def test_i_can_tokenize_identifiers(text, expected):
+    tokens = list(Tokenizer(text))
+    comparison = tokens[0].type == TokenKind.IDENTIFIER
+    assert comparison == expected
+
+
+@pytest.mark.parametrize("text, message, error_text, index, line, column", [
+    ("'string", "Missing Trailing quote", "'string", 7, 1, 8),
+    ('"string', "Missing Trailing quote", '"string', 7, 1, 8),
+    ('"a" + "string', "Missing Trailing quote", '"string', 13, 1, 14),
+    ('"a"\n\n"string', "Missing Trailing quote", '"string', 12, 3, 8),
+    ("c::", "Concept name not found", "", 2, 1, 3),
+    ("c:foo\nbar:", "New line is forbidden in concept name", "foo", 5, 1, 6),
+    ("c:foo", "Missing ending colon", "foo", 5, 1, 6)
+])
+def test_i_can_detect_tokenizer_errors(text, message, error_text, index, line, column):
+    with pytest.raises(LexerError) as e:
+        list(Tokenizer(text))
+    assert e.value.message == message
+    assert e.value.text == error_text
+    assert e.value.index == index
+    assert e.value.line == line
+    assert e.value.column == column
+
+
+@pytest.mark.parametrize("text, expected_text, expected_newlines", [
+    ("'foo'", "'foo'", 0),
+    ('"foo"', '"foo"', 0),
+    ("'foo\rbar'", "'foo\rbar'", 1),
+    ("'foo\nbar'", "'foo\nbar'", 1),
+    ("'foo\n\rbar'", "'foo\n\rbar'", 1),
+    ("'foo\r\nbar'", "'foo\r\nbar'", 1),
+    ("'foo\r\rbar'", "'foo\r\rbar'", 2),
+    ("'foo\n\nbar'", "'foo\n\nbar'", 2),
+    ("'foo\r\n\n\rbar'", "'foo\r\n\n\rbar'", 2),
+    ("'\rfoo\rbar\r'", "'\rfoo\rbar\r'", 3),
+    ("'\nfoo\nbar\n'", "'\nfoo\nbar\n'", 3),
+    ("'\n\rfoo\r\n'", "'\n\rfoo\r\n'", 2),
+    (r"'foo\'bar'", r"'foo\'bar'", 0),
+    (r'"foo\"bar"', r'"foo\"bar"', 0),
+    ('"foo"bar"', '"foo"', 0),
+    ("'foo'bar'", "'foo'", 0),
+])
+def test_i_can_parse_strings(text, expected_text, expected_newlines):
+    lexer = Tokenizer(text)
+    text_found, nb_of_newlines = lexer.eat_string(0, 1, 1)
+
+    assert nb_of_newlines == expected_newlines
+    assert text_found == expected_text
+
+
+@pytest.mark.parametrize("text", [
+    "1", "3.1415", "0.5", "01", "-5", "-5.10"
+])
+def test_i_can_parse_numbers(text):
+    tokens = list(Tokenizer(text))
+    assert tokens[0].type == TokenKind.NUMBER
+    assert tokens[0].value == text
+
+
+@pytest.mark.parametrize("text, expected", [
+    ("def", Keywords.DEF),
+    ("concept", Keywords.CONCEPT),
+    ("as", Keywords.AS),
+    ("pre", Keywords.PRE),
+    ("post", Keywords.POST)
+])
+def test_i_can_recognize_keywords(text, expected):
+    tokens = list(Tokenizer(text))
+    assert tokens[0].type == TokenKind.KEYWORD
+    assert tokens[0].value == expected