/// <summary>
/// Checks that a single line of input text is formatted as expected.
/// </summary>
/// <param name="text">Input code to format</param>
/// <param name="expected">The expected result from the formatter. If null, then text is used.</param>
/// <param name="line">The line number to request to be formatted.</param>
/// <param name="languageVersion">Python language version to format.</param>
/// <param name="editStart">Where the edit should begin (i.e. when whitespace or a multi-line string begins a line).</param>
public static void AssertSingleLineFormat(string text, string expected = null, int line = 1, PythonLanguageVersion languageVersion = PythonLanguageVersion.V37, int editStart = 1)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (expected == null)
{
expected = text;
}
using (var reader = new StringReader(text)) {
var lineFormatter = new LineFormatter(reader, languageVersion);
var edits = lineFormatter.FormatLine(line);
edits.Should().OnlyContain(new TextEdit {
newText = expected,
range = new Range {
start = new SourceLocation(line, editStart),
end = new SourceLocation(line, text.Split('\n')[line - 1].Length + 1)
}
});
}
}
public void FormatLineTest(string lm0, string ts0, string s0, string[] s1)
{
var d = new LineFormatter(new LineMargins(lm0), new TabStops(ts0));
var r1 = d.FormatLine(s0);
Assert.Equal(s1, r1);
}
public static void AssertNoEdits(string text, int line = 1, PythonLanguageVersion languageVersion = PythonLanguageVersion.V37)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
using (var reader = new StringReader(text)) {
var lineFormatter = new LineFormatter(reader, languageVersion);
lineFormatter.FormatLine(line).Should().BeEmpty();
}
}
public void GrammarFile()
{
var src = TestData.GetPath("TestData", "Formatting", "pythonGrammar.py");
string fileContents;
using (var reader = new StreamReader(src, true)) {
fileContents = reader.ReadToEnd();
}
var lines = fileContents.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None);
using (var reader = new StringReader(fileContents)) {
var lineFormatter = new LineFormatter(reader, PythonLanguageVersion.V37);
for (var i = 0; i < lines.Length; i++)
{
var lineNum = i + 1;
var edits = lineFormatter.FormatLine(lineNum);
edits.Should().NotBeNull().And.HaveCountLessOrEqualTo(1);
if (edits.Length == 0)
{
continue;
}
var edit = edits[0];
var start = edit.range.start;
var end = edit.range.end;
start.line.Should().Be(i);
end.line.Should().Be(i);
var lineText = lines[i];
edit.newText.Should().Be(lineText.Substring(start.character, end.character - start.character - 1), $"because line {lineNum} should be unchanged");
}
}
}