private string[] ToConstructorNullArgsTestCaseSourceImp(ConstructorInfo[] constructors)
{
var lines = new List <string>();
var paramGroups = constructors.Select(i => i.GetParameters()).ToArray();
var havingTwoOrMoreNullableColumns = paramGroups.Where(g => g.Count(p => !p.ParameterType.IsValueType) > 1);
var argTypes = havingTwoOrMoreNullableColumns.SelectMany(g => g)
.Where(m_CSharpService.ShouldUseVariableForParameter);
var variableDeclarations = argTypes
.Distinct()
.Select(c => m_CSharpService.GetLocalVariableDeclaration(c.ParameterType, false, false))
.ToArray();
foreach (var declaration in variableDeclarations)
{
lines.Add(declaration);
}
if (variableDeclarations.Any())
{
lines.Add(string.Empty);
}
bool testCasesExist = false;
int testCasesLineIndex = lines.Count;
foreach (var ctor in constructors)
{
var typeName = ctor.DeclaringType?.Name;
var parameterTypes = ctor.GetParameters();
var arguments = m_CSharpService.GetMethodArguments(ctor, true, false);
for (int i = 0; i < parameterTypes.Length; i++)
{
if (parameterTypes[i].ParameterType.IsValueType)
{
continue;
}
testCasesExist = true;
var name = parameterTypes[i].Name;
var argumentsWithNulledParameter = new List <string>(arguments)
{
[i] = "null"
};
lines.Add($"yield return new TestCaseData(new TestDelegate(() => new " +
$"{typeName}({string.Join(", ", argumentsWithNulledParameter)}))).SetName(\"null {name}\");");
}
}
if (testCasesExist)
{
lines.Insert(testCasesLineIndex, "// ReSharper disable ObjectCreationAsStatement");
lines.Add("// ReSharper restore ObjectCreationAsStatement");
}
return(lines.ToArray());
}