public void When_cells_are_empty_they_must_be_exposed_as_empty()
{
// Arrange
string emptyCellValue = string.Empty;
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("A", "B", "C")
.WithoutRows()
.WithRow(new[]
{
emptyCellValue,
emptyCellValue,
emptyCellValue
})
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell1 = row.GetCell("A");
string cell2 = row.GetCell("B");
string cell3 = row.GetCell("C");
// Assert
cell1.Should().Be(emptyCellValue);
cell2.Should().Be(emptyCellValue);
cell3.Should().Be(emptyCellValue);
}
public void When_source_contains_uneven_number_of_quotes_it_should_not_read_entire_source()
{
// Arrange
const string header = "C1";
string cell = DefaultTextQualifier + "12345";
int bufferSize = header.Length + Environment.NewLine.Length + cell.Length;
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithIntermediateReader(r => new ReaderThatFailsAfterReadingTooMuch(r, bufferSize))
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithMaximumLineLength(cell.Length))
.WithHeaderLine(header)
.WithoutRows()
.WithDataLine(cell)
.WithDataLine("A")
.WithDataLine("B")
.Build();
// Act
// ReSharper disable once AccessToDisposedClosure
Action action = () => _ = reader.SkipWhile(_ => true).ToArray();
// Assert
action.Should().ThrowExactly <DelimitedValuesParseException>();
}
public void When_reading_cell_value_as_nullable_boolean_it_should_succeed()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("A", "B", "C")
.WithoutRows()
.WithRow(new[]
{
"True",
"False",
""
})
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
bool? cell1 = row.GetCell<bool?>("A");
bool? cell2 = row.GetCell<bool?>("B");
bool? cell3 = row.GetCell<bool?>("C");
// Assert
cell1.Should().BeTrue();
cell2.Should().BeFalse();
cell3.Should().Be(null);
}
public void When_header_and_first_line_have_been_read_it_should_be_positioned_at_second_line()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
// Act
_ = reader.First();
// Assert
reader.LineNumber.Should().Be(2);
}
public void When_header_and_first_line_have_been_read_it_should_be_positioned_at_second_line()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
reader.First();
// Assert
reader.LineNumber.Should().Be(2);
}
public void When_no_field_separator_is_specified_it_must_autodetect_tab_as_separator()
{
// Act
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(null))
.WithHeaderLine("A\tB\tC")
.WithoutRows()
.Build();
// Assert
reader.ColumnNames.Should().HaveCount(3);
}
public void When_accessing_line_after_disposal_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
reader.Dispose();
// Act
Action action = () => _ = reader.Line;
// Assert
action.Should().ThrowExactly <ObjectDisposedException>();
}
public void When_enumerating_after_disposal_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
reader.Dispose();
// Act
Action action = () => _ = reader.TakeWhile(_ => true).ToArray();
// Assert
action.Should().ThrowExactly <ObjectDisposedException>();
}
public void When_enumerating_after_disposal_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
reader.Dispose();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
// ReSharper disable once ConvertToLambdaExpression
Action action = () => { reader.TakeWhile(x => true).ToArray(); };
// Assert
action.ShouldThrow<ObjectDisposedException>();
}
public void When_source_contains_multiple_column_names_they_must_be_exposed()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("C1", "C2", "C3")
.Build();
// Act
string[] columnNames = reader.ColumnNames.ToArray();
// Assert
columnNames.Should().HaveCount(3);
columnNames[0].Should().Be("C1");
columnNames[1].Should().Be("C2");
columnNames[2].Should().Be("C3");
}
public void When_source_contains_uneven_number_of_quotes_it_should_fail()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(DefaultTextQualifier)
.Build();
// Act
// ReSharper disable once AccessToDisposedClosure
Action action = () => _ = reader.SkipWhile(_ => true).ToArray();
// Assert
action.Should().ThrowExactly <DelimitedValuesParseException>().WithMessage("Missing closing text qualifier.");
}
public void When_cell_contains_unquoted_text_before_quoted_text_it_should_fail()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine("a" + DefaultTextQualifier + "b" + DefaultTextQualifier)
.Build();
// Act
// ReSharper disable once AccessToDisposedClosure
Action action = () => _ = reader.Take(1).ToArray();
// Assert
action.Should().ThrowExactly <DelimitedValuesParseException>().WithMessage("Text qualifier must be the first non-whitespace character of a cell.");
}
public void When_reading_cell_value_with_custom_converter_it_should_succeed()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("A")
.WithoutRows()
.WithRow(new[] { "X" })
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
string cell = row.GetCell("A", c => "Y");
// Assert
cell.Should().Be("Y");
}
public void When_source_contains_multiple_column_names_they_must_be_exposed()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("C1", "C2", "C3")
.Build();
// Act
string[] columnNames = reader.ColumnNames.ToArray();
// Assert
columnNames.Should().HaveCount(3);
columnNames[0].Should().Be("C1");
columnNames[1].Should().Be("C2");
columnNames[2].Should().Be("C3");
}
public void When_accessing_line_after_disposal_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder().Build();
reader.Dispose();
// Act
Action action = () =>
{
// ReSharper disable once UnusedVariable
string dummy = reader.Line;
};
// Assert
action.ShouldThrow<ObjectDisposedException>();
}
public void When_no_field_separator_is_specified_it_must_give_semicolon_precedence_over_comma_during_auto_detection()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(null))
.WithHeaderLine("A;B;C,D,E")
.WithoutRows()
.WithDataLine("1;2;345")
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
// Assert
reader.ColumnNames.Should().HaveCount(3);
row.GetCell("A").Should().Be("1");
}
public void When_quoted_cell_contains_like_breaks_they_must_be_preserved()
{
// Arrange
const string cellValue = "a\rb\nc\r\nd";
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("C")
.WithoutRows()
.WithDataLine(DefaultTextQualifier + cellValue + DefaultTextQualifier)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("C");
// Assert
cell.Should().Be(cellValue);
}
public void When_reading_cell_value_with_custom_converter_it_should_succeed()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("A")
.WithoutRows()
.WithRow(new[]
{
"X"
})
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
string? cell = row.GetCell("A", _ => "Y");
// Assert
cell.Should().Be("Y");
}
public void When_reading_cell_value_it_should_respect_culture()
{
// Arrange
var culture = new CultureInfo("nl-NL");
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithCulture(culture))
.WithSingleColumnHeader("A")
.WithoutRows()
.WithRow(new[] { "3,5" })
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
decimal cell = row.GetCell<decimal>("A");
// Assert
cell.Should().Be(3.5m);
}
public void When_reading_cell_value_as_nullable_boolean_it_should_succeed()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("A", "B", "C")
.WithoutRows()
.WithRow(new[] { "True", "False", "" })
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
var cell1 = row.GetCell<bool?>("A");
var cell2 = row.GetCell<bool?>("B");
var cell3 = row.GetCell<bool?>("C");
// Assert
cell1.Should().BeTrue();
cell2.Should().BeFalse();
cell3.Should().Be(null);
}
public void When_lines_are_broken_using_carriage_returns_followed_by_with_line_feeds_it_should_report_the_correct_starting_line_number()
{
// Arrange
const string lineBreaker = "\r\n";
const string cellValueWithLineBreak = "Cell with" + lineBreaker + "line break";
string rowWithLineBreak = DefaultTextQualifier + cellValueWithLineBreak + DefaultTextQualifier;
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(rowWithLineBreak)
.WithDataLine(rowWithLineBreak)
.Build();
// Act
_ = reader.Take(2).ToArray();
// Assert
reader.LineNumber.Should().Be(4);
}
public void When_quoted_cell_contains_leading_and_trailing_whitespace_it_must_be_preserved()
{
// Arrange
const string columnHeaderName = "C";
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader(columnHeaderName)
.WithoutRows()
.WithRow(new[]
{
" \" A \" "
})
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
// Assert
row.GetCell(columnHeaderName).Should().Be(" A ");
}
public void When_quoted_cell_surrounds_text_qualifiers_they_must_be_unescaped()
{
// Arrange
const string cellValue = "\"A nice day...\"";
string escaped = DefaultTextQualifier +
cellValue.Replace(DefaultTextQualifier, DefaultTextQualifier + DefaultTextQualifier, StringComparison.Ordinal) + DefaultTextQualifier;
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("C")
.WithoutRows()
.WithDataLine(escaped)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("C");
// Assert
cell.Should().Be(cellValue);
}
public void When_quoted_cell_contains_field_separators_they_must_be_preserved()
{
// Arrange
const char separator = ':';
const string cellValue = "x:y:z";
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(separator))
.WithHeaderLine("A" + separator + "B")
.WithoutRows()
.WithDataLine(DefaultTextQualifier + cellValue + DefaultTextQualifier + separator)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("A");
// Assert
cell.Should().Be(cellValue);
}
public void When_lines_are_broken_using_line_feeds_it_should_report_the_correct_starting_line_number()
{
// Arrange
const string lineBreaker = "\n";
const string cellValueWithLineBreak = "Cell with" + lineBreaker + "line break";
string rowWithLineBreak = DefaultTextQualifier + cellValueWithLineBreak + DefaultTextQualifier;
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(rowWithLineBreak)
.WithDataLine(rowWithLineBreak)
.Build();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
reader.Take(2).ToArray();
// Assert
reader.LineNumber.Should().Be(4);
}
public void When_source_contains_uneven_number_of_quotes_it_should_report_the_correct_starting_line_number()
{
// Arrange
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(DefaultTextQualifier + "12345")
.WithDataLine("A")
.WithDataLine("B")
.Build();
try
{
// Act
_ = reader.SkipWhile(_ => true).ToArray();
}
catch (DelimitedValuesParseException)
{
// Assert
reader.LineNumber.Should().Be(2);
}
}
public void When_reading_cell_value_it_should_respect_culture()
{
// Arrange
var culture = new CultureInfo("nl-NL");
using DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithCulture(culture))
.WithSingleColumnHeader("A")
.WithoutRows()
.WithRow(new[]
{
"3,5"
})
.Build();
// Act
IDelimitedValuesReaderRow row = reader.First();
decimal cell = row.GetCell<decimal>("A");
// Assert
cell.Should().Be(3.5m);
}
public void When_cell_contains_unquoted_text_after_quoted_text_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(DefaultTextQualifier + "a" + DefaultTextQualifier + "b")
.Build();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
Action action = () => reader.Take(1).ToArray();
// Assert
action.ShouldThrow<DelimitedValuesParseException>()
.WithMessage("Text-qualified cell cannot contain non-whitespace after the closing text qualifier.");
}
public void When_quoted_cell_contains_like_breaks_they_must_be_preserved()
{
// Arrange
const string cellValue = "a\rb\nc\r\nd";
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("C")
.WithoutRows()
.WithDataLine(DefaultTextQualifier + cellValue + DefaultTextQualifier)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("C");
// Assert
cell.Should().Be(cellValue);
}
public void When_no_field_separator_is_specified_it_must_autodetect_tab_as_separator()
{
// Act
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(null))
.WithHeaderLine("A\tB\tC")
.WithoutRows()
.Build();
// Assert
reader.ColumnNames.Should().HaveCount(3);
}
public void When_quoted_cell_surrounds_text_qualifiers_they_must_be_unescaped()
{
// Arrange
const string cellValue = "\"A nice day...\"";
string escaped = DefaultTextQualifier +
cellValue.Replace(DefaultTextQualifier, DefaultTextQualifier + DefaultTextQualifier) +
DefaultTextQualifier;
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader("C")
.WithoutRows()
.WithDataLine(escaped)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("C");
// Assert
cell.Should().Be(cellValue);
}
public void When_cells_are_empty_they_must_be_exposed_as_empty()
{
// Arrange
string emptyCellValue = string.Empty;
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithColumnHeaders("A", "B", "C")
.WithoutRows()
.WithRow(new[] { emptyCellValue, emptyCellValue, emptyCellValue })
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell1 = row.GetCell("A");
string cell2 = row.GetCell("B");
string cell3 = row.GetCell("C");
// Assert
cell1.Should().Be(emptyCellValue);
cell2.Should().Be(emptyCellValue);
cell3.Should().Be(emptyCellValue);
}
public void When_source_contains_uneven_number_of_quotes_it_should_fail()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(DefaultTextQualifier)
.Build();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
Action action = () => reader.SkipWhile(x => true).ToArray();
// Assert
action.ShouldThrow<DelimitedValuesParseException>().WithMessage("Missing closing text qualifier.");
}
public void When_quoted_cell_contains_leading_and_trailing_whitespace_it_must_be_preserved()
{
// Arrange
const string columnHeaderName = "C";
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader(columnHeaderName)
.WithoutRows()
.WithRow(new[] { " \" A \" " })
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
// Assert
row.GetCell(columnHeaderName).Should().Be(" A ");
}
public void When_source_contains_uneven_number_of_quotes_it_should_not_read_entire_source()
{
// Arrange
const string header = "C1";
string cell = DefaultTextQualifier + "12345";
int bufferSize = header.Length + Environment.NewLine.Length + cell.Length;
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithIntermediateReader(r => new ReaderThatFailsAfterReadingTooMuch(r, bufferSize))
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithMaximumLineLength(cell.Length))
.WithHeaderLine(header)
.WithoutRows()
.WithDataLine(cell)
.WithDataLine("A")
.WithDataLine("B")
.Build();
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
Action action = () => reader.SkipWhile(x => true).ToArray();
// Assert
action.ShouldThrow<DelimitedValuesParseException>();
}
When_no_field_separator_is_specified_it_must_give_semicolon_precedence_over_comma_during_autodetection()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(null))
.WithHeaderLine("A;B;C,D,E")
.WithoutRows()
.WithDataLine("1;2;345")
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
// Assert
reader.ColumnNames.Should().HaveCount(3);
row.GetCell("A").Should().Be("1");
}
public void When_source_contains_uneven_number_of_quotes_it_should_report_the_correct_starting_line_number()
{
// Arrange
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSingleColumnHeader()
.WithoutRows()
.WithDataLine(DefaultTextQualifier + "12345")
.WithDataLine("A")
.WithDataLine("B")
.Build();
try
{
// Act
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
reader.SkipWhile(r => true).ToArray();
}
catch (DelimitedValuesParseException)
{
// Assert
reader.LineNumber.Should().Be(2);
}
}
public void When_quoted_cell_contains_field_separators_they_must_be_preserved()
{
// Arrange
const char separator = ':';
const string cellValue = "x:y:z";
DelimitedValuesReader reader = new DelimitedValuesReaderBuilder()
.WithSettings(new DelimitedValuesReaderSettingsBuilder()
.WithFieldSeparator(separator))
.WithHeaderLine("A" + separator + "B")
.WithoutRows()
.WithDataLine(DefaultTextQualifier + cellValue + DefaultTextQualifier + separator)
.Build();
// Act
IDelimitedValuesReaderRow row = reader.Single();
string cell = row.GetCell("A");
// Assert
cell.Should().Be(cellValue);
}
