System.Linq.Dynamic.Core/test/System.Linq.Dynamic.Core.Tests/Parser/StringParserTests.cs at develop · EvoltDev/System.Linq.Dynamic.Core · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
using System.Linq.Dynamic.Core.Exceptions;
using System.Linq.Dynamic.Core.Parser;
using FluentAssertions;
using Xunit;

namespace System.Linq.Dynamic.Core.Tests.Parser;

public class StringParserTests
{
    [Theory]
    [InlineData("'s")]
    [InlineData("\"s")]
    public void StringParser_ParseStringAndUnescape_With_UnexpectedUnclosedString_ThrowsException(string input)
    {
        // Act
        var exception = Assert.Throws<ParseException>(() => StringParser.ParseStringAndUnescape(input));

        // Assert
        Assert.Equal($"Unexpected end of string with unclosed string at position 2 near '{input}'.", exception.Message);
    }

    [Theory]
    [InlineData("")]
    [InlineData(null)]
    [InlineData("x")]
    public void StringParser_ParseStringAndUnescape_With_InvalidStringLength_ThrowsException(string input)
    {
        // Act
        Action action = () => StringParser.ParseStringAndUnescape(input);

        // Assert
        action.Should().Throw<ParseException>().WithMessage($"String '{input}' should have at least 2 characters.");
    }

    [Theory]
    [InlineData("xx")]
    [InlineData("  ")]
    public void StringParser_ParseStringAndUnescape_With_InvalidStringQuoteCharacter_ThrowsException(string input)
    {
        // Act
        Action action = () => StringParser.ParseStringAndUnescape(input);

        // Assert
        action.Should().Throw<ParseException>().WithMessage("An escaped string should start with a double (\") or a single (') quote.");
    }

    [Fact]
    public void StringParser_ParseStringAndUnescape_With_UnexpectedUnrecognizedEscapeSequence_ThrowsException()
    {
        // Arrange
        var input = new string(new[] { '"', '\\', 'u', '?', '"' });

        // Act
        Action action = () => StringParser.ParseStringAndUnescape(input);

        // Assert
        var parseException = action.Should().Throw<ParseException>();

        parseException.Which.InnerException!.Message.Should().Contain("hexadecimal digits");

        parseException.Which.StackTrace.Should().Contain("at System.Linq.Dynamic.Core.Parser.StringParser.ParseStringAndUnescape(String s, Int32 pos) in ").And.Contain("StringParser.cs:line ");
    }

    [Theory]
    [InlineData("''", "")]
    [InlineData("'s'", "s")]
    [InlineData("'\\\\'", "\\")]
    [InlineData("'\\n'", "\n")]
    public void StringParser_ParseStringAndUnescape_SingleQuotedString(string input, string expectedResult)
    {
        // Act
        var result = StringParser.ParseStringAndUnescape(input);

        // Assert
        result.Should().Be(expectedResult);
    }

    [Theory]
    [InlineData("\"\"", "")]
    [InlineData("\"\\\\\"", "\\")]
    [InlineData("\"\\n\"", "\n")]
    [InlineData("\"\\\\n\"", "\\n")]
    [InlineData("\"\\\\new\"", "\\new")]
    [InlineData("\"[]\"", "[]")]
    [InlineData("\"()\"", "()")]
    [InlineData("\"(\\\"\\\")\"", "(\"\")")]
    [InlineData("\"/\"", "/")]
    [InlineData("\"a\"", "a")]
    [InlineData("\"This \\\"is\\\" a test.\"", "This \"is\" a test.")]
    [InlineData(@"""This \""is\"" b test.""", @"This ""is"" b test.")]
    [InlineData("\"ab\\\"cd\"", "ab\"cd")]
    [InlineData("\"\\\"\"", "\"")]
    [InlineData("\"\\\"\\\"\"", "\"\"")]
    [InlineData("\"AB YZ 19 \uD800\udc05 \u00e4\"", "AB YZ 19 \uD800\udc05 \u00e4")]
    [InlineData("\"\\\\\\\\192.168.1.1\\\\audio\\\\new\"", "\\\\192.168.1.1\\audio\\new")]
    [InlineData("\"{\\\"PropertyA\\\":\\\"\\\"}\"", @"{""PropertyA"":""""}")] // #786
    public void StringParser_ParseStringAndUnescape_DoubleQuotedString(string input, string expectedResult)
    {
        // Act
        var result = StringParser.ParseStringAndUnescape(input);

        // Assert
        result.Should().Be(expectedResult);
    }

    [Fact]
    public void StringParser_ParseStringAndUnescape()
    {
        // Arrange
        var test = "\"x\\\"X\"";

        // Act
        var result = StringParser.ParseStringAndUnescape(test);

        // Assert
        result.Should().Be("x\"X");
    }

    [Fact]
    public void StringParser_ParseStringAndUnescapeTwoDoubleQuotesByASingleDoubleQuote()
    {
        // Arrange
        var test = "\"x\"\"X\"";

        // Act
        var result = StringParser.ParseStringAndUnescapeTwoDoubleQuotesByASingleDoubleQuote(test);

        // Assert
        result.Should().Be("x\"X");
    }
}