public void Pattern_RawTextAndArrayOfSegments_ShouldMakeCopyOfArrayOfSegments()
{
// Arrange
var rawText = "raw";
var literalPartA = RoutePatternFactory.LiteralPart("A");
var paramPartB = RoutePatternFactory.ParameterPart("B");
var paramPartC = RoutePatternFactory.ParameterPart("C");
var paramPartD = RoutePatternFactory.ParameterPart("D");
var segments = new[]
{
RoutePatternFactory.Segment(literalPartA, paramPartB),
RoutePatternFactory.Segment(paramPartC, literalPartA),
RoutePatternFactory.Segment(paramPartD),
RoutePatternFactory.Segment(literalPartA)
};
// Act
var actual = RoutePatternFactory.Pattern(rawText, segments);
segments[1] = RoutePatternFactory.Segment(RoutePatternFactory.ParameterPart("E"));
Array.Resize(ref segments, 2);
// Assert
Assert.Equal(3, actual.Parameters.Count);
Assert.Same(paramPartB, actual.Parameters[0]);
Assert.Same(paramPartC, actual.Parameters[1]);
Assert.Same(paramPartD, actual.Parameters[2]);
}
public void Pattern_CreatesConstraintFromString()
{
// Arrange
var template = "{a}/{b}/{c}";
var defaults = new { };
var constraints = new { d = "foo", };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.ParameterPolicies.OrderBy(kvp => kvp.Key),
kvp =>
{
Assert.Equal("d", kvp.Key);
var regex = Assert.IsType <RegexRouteConstraint>(Assert.Single(kvp.Value).ParameterPolicy);
Assert.Equal("^(foo)$", regex.Constraint.ToString());
});
}
public void Pattern_ExtraConstraints_MultipleConstraintsForKey()
{
// Arrange
var template = "{a}/{b}/{c}";
var defaults = new { };
var constraints = new { d = new object[] { new RegexRouteConstraint("foo"), new RegexRouteConstraint("bar"), "baz" } };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.ParameterPolicies.OrderBy(kvp => kvp.Key),
kvp =>
{
Assert.Equal("d", kvp.Key);
Assert.Collection(
kvp.Value,
c => Assert.Equal("foo", Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy).Constraint.ToString()),
c => Assert.Equal("bar", Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy).Constraint.ToString()),
c => Assert.Equal("^(baz)$", Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy).Constraint.ToString()));
});
}
public void Pattern_ExtraConstraints_RouteConstraint()
{
// Arrange
var template = "{a}/{b}/{c}";
var defaults = new { };
var constraints = new { d = Mock.Of <IRouteConstraint>(), e = Mock.Of <IRouteConstraint>(), };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.ParameterPolicies.OrderBy(kvp => kvp.Key),
kvp =>
{
Assert.Equal("d", kvp.Key);
Assert.Collection(
kvp.Value,
c => Assert.NotNull(c.ParameterPolicy));
},
kvp =>
{
Assert.Equal("e", kvp.Key);
Assert.Collection(
kvp.Value,
c => Assert.NotNull(c.ParameterPolicy));
});
}
public void Pattern_MergesDefaultValues()
{
// Arrange
var template = "{a}/{b}/{c=19}";
var defaults = new { a = "15", b = 17 };
var constraints = new { };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Equal("15", actual.GetParameter("a").Default);
Assert.Equal(17, actual.GetParameter("b").Default);
Assert.Equal("19", actual.GetParameter("c").Default);
Assert.Collection(
actual.Defaults.OrderBy(kvp => kvp.Key),
kvp => { Assert.Equal("a", kvp.Key); Assert.Equal("15", kvp.Value); },
kvp => { Assert.Equal("b", kvp.Key); Assert.Equal(17, kvp.Value); },
kvp => { Assert.Equal("c", kvp.Key); Assert.Equal("19", kvp.Value); });
}
public static RoutePattern Parse(string pattern)
{
if (pattern == null)
{
throw new ArgumentNullException(nameof(pattern));
}
var trimmedPattern = TrimPrefix(pattern);
var context = new Context(trimmedPattern);
var segments = new List <RoutePatternPathSegment>();
while (context.MoveNext())
{
var i = context.Index;
if (context.Current == Separator)
{
// If we get here is means that there's a consecutive '/' character.
// Templates don't start with a '/' and parsing a segment consumes the separator.
throw new RoutePatternException(pattern, Resources.TemplateRoute_CannotHaveConsecutiveSeparators);
}
if (!ParseSegment(context, segments))
{
throw new RoutePatternException(pattern, context.Error);
}
// A successful parse should always result in us being at the end or at a separator.
Debug.Assert(context.AtEnd() || context.Current == Separator);
if (context.Index <= i)
{
// This shouldn't happen, but we want to crash if it does.
var message = "Infinite loop detected in the parser. Please open an issue.";
throw new InvalidProgramException(message);
}
}
if (IsAllValid(context, segments))
{
return(RoutePatternFactory.Pattern(pattern, segments));
}
else
{
throw new RoutePatternException(pattern, context.Error);
}
}
public void Pattern_ExtraConstraints_NestedArray_Throws()
{
// Arrange
var template = "{a}/{b}/{c:int}";
var defaults = new { };
var constraints = new { c = new object[] { new object[0] } };
var original = RoutePatternFactory.Parse(template);
// Act & Assert
Assert.Throws <InvalidOperationException>(() =>
{
RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
});
}
public void Pattern_MergesConstraints()
{
// Arrange
var template = "{a:int}/{b}/{c}";
var defaults = new { };
var constraints = new { a = new RegexRouteConstraint("foo"), b = new RegexRouteConstraint("bar") };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.GetParameter("a").ParameterPolicies,
c => Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy),
c => Assert.Equal("int", c.Content));
Assert.Collection(
actual.GetParameter("b").ParameterPolicies,
c => Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy));
Assert.Collection(
actual.ParameterPolicies.OrderBy(kvp => kvp.Key),
kvp =>
{
Assert.Equal("a", kvp.Key);
Assert.Collection(
kvp.Value,
c => Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy),
c => Assert.Equal("int", c.Content));
},
kvp =>
{
Assert.Equal("b", kvp.Key);
Assert.Collection(
kvp.Value,
c => Assert.IsType <RegexRouteConstraint>(c.ParameterPolicy));
});
}
public void Pattern_SameDuplicateDefaultValue()
{
// Arrange
var template = "{a=13}/{b}/{c}";
var defaults = new { a = "13", };
var constraints = new { };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.Defaults,
kvp => { Assert.Equal("a", kvp.Key); Assert.Equal("13", kvp.Value); });
}
public void Pattern_InvalidConstraintTypeThrows()
{
// Arrange
var template = "{a}/{b}/{c}";
var defaults = new { };
var constraints = new { d = 17, };
var original = RoutePatternFactory.Parse(template);
// Act
var ex = Assert.Throws <InvalidOperationException>(() => RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments));
// Assert
Assert.Equal(
$"Invalid constraint '17'. A constraint must be of type 'string' or '{typeof(IRouteConstraint)}'.",
ex.Message);
}
public void Pattern_OptionalParameterDefaultValue_Throws()
{
// Arrange
var template = "{a}/{b}/{c?}";
var defaults = new { c = "15", };
var constraints = new { };
var original = RoutePatternFactory.Parse(template);
// Act
var ex = Assert.Throws <InvalidOperationException>(() => RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments));
// Assert
Assert.Equal(
"An optional parameter cannot have default value.",
ex.Message);
}
public void Pattern_RawTextAndDefaultsAndParameterPoliciesAndArrayOfSegments_ShouldMakeCopyOfArrayOfSegments()
{
// Arrange
var rawText = "raw";
object defaults = new { B = 12, C = 4 };
object parameterPolicies = null;
var literalPartA = RoutePatternFactory.LiteralPart("A");
var paramPartB = RoutePatternFactory.ParameterPart("B");
var paramPartC = RoutePatternFactory.ParameterPart("C");
var paramPartD = RoutePatternFactory.ParameterPart("D");
var segments = new[]
{
RoutePatternFactory.Segment(literalPartA, paramPartB),
RoutePatternFactory.Segment(paramPartC, literalPartA),
RoutePatternFactory.Segment(paramPartD),
RoutePatternFactory.Segment(literalPartA)
};
// Act
var actual = RoutePatternFactory.Pattern(rawText, defaults, parameterPolicies, segments);
segments[1] = RoutePatternFactory.Segment(RoutePatternFactory.ParameterPart("E"));
Array.Resize(ref segments, 2);
// Assert
Assert.Equal(3, actual.Parameters.Count);
Assert.Equal(paramPartB.Name, actual.Parameters[0].Name);
Assert.Equal(12, actual.Parameters[0].Default);
Assert.Null(paramPartB.Default);
Assert.NotSame(paramPartB, actual.Parameters[0]);
Assert.Equal(paramPartC.Name, actual.Parameters[1].Name);
Assert.Equal(4, actual.Parameters[1].Default);
Assert.NotSame(paramPartC, actual.Parameters[1]);
Assert.Null(paramPartC.Default);
Assert.Equal(paramPartD.Name, actual.Parameters[2].Name);
Assert.Null(actual.Parameters[2].Default);
Assert.Same(paramPartD, actual.Parameters[2]);
Assert.Null(paramPartD.Default);
}
public void Pattern_ExtraDefaultValues()
{
// Arrange
var template = "{a}/{b}/{c}";
var defaults = new { d = "15", e = 17 };
var constraints = new { };
var original = RoutePatternFactory.Parse(template);
// Act
var actual = RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments);
// Assert
Assert.Collection(
actual.Defaults.OrderBy(kvp => kvp.Key),
kvp => { Assert.Equal("d", kvp.Key); Assert.Equal("15", kvp.Value); },
kvp => { Assert.Equal("e", kvp.Key); Assert.Equal(17, kvp.Value); });
}
public void Pattern_DifferentDuplicateDefaultValue_Throws()
{
// Arrange
var template = "{a=13}/{b}/{c}";
var defaults = new { a = "15", };
var constraints = new { };
var original = RoutePatternFactory.Parse(template);
// Act
var ex = Assert.Throws <InvalidOperationException>(() => RoutePatternFactory.Pattern(
original.RawText,
defaults,
constraints,
original.PathSegments));
// Assert
Assert.Equal(
"The route parameter 'a' has both an inline default value and an explicit default " +
"value specified. A route parameter cannot contain an inline default value when a " +
"default value is specified explicitly. Consider removing one of them.",
ex.Message);
}