public void VersionedStringBuilder_IsInitializedToSpecifiedString()
{
var builder = new VersionedStringBuilder("Hello, world!");
TheResultingValue(builder.Version).ShouldBe(0);
TheResultingString(builder.ToString()).ShouldBe("Hello, world!");
}
public void VersionedStringSource_ExplicitlyConvertsToStringBuilder_WhenSourceIsStringBuilder()
{
var data = new VersionedStringBuilder("Hello, world!");
var source = new VersionedStringSource(data);
TheResultingObject((VersionedStringBuilder)source)
.ShouldSatisfyTheCondition(x => x.ToString() == "Hello, world!");
}
public void VersionedStringSource_CannotConvertToString_WhenSourceIsNotString()
{
var data = new VersionedStringBuilder("Hello, world!");
var source = new VersionedStringSource(data);
Assert.That(() => TheResultingString((String)source).ShouldBe("Hello, world!"),
Throws.TypeOf<InvalidCastException>());
}
public void VersionedStringSource_IsValid_WhenStringBuilderSourceIsSpecified()
{
var data = new VersionedStringBuilder("Hello, world!");
var source = new VersionedStringSource(data);
TheResultingValue(source.IsValid).ShouldBe(true);
TheResultingValue(source.IsSourcedFromString).ShouldBe(false);
TheResultingValue(source.IsSourcedFromStringBuilder).ShouldBe(true);
}
public void VersionedStringBuilder_VersionIsNotIncremented_WhenAppendStringBuilderIsCalled_AndValueIsNull()
{
var builder = new VersionedStringBuilder("Hello, world!");
builder.Append((StringBuilder)null);
TheResultingValue(builder.Version).ShouldBe(0);
TheResultingString(builder.ToString()).ShouldBe("Hello, world!");
}
public void VersionedStringBuilder_VersionIsIncremented_WhenClearIsCalled()
{
var builder = new VersionedStringBuilder("Hello, world!");
builder.Clear();
TheResultingValue(builder.Version).ShouldBe(1);
TheResultingString(builder.ToString()).ShouldBe(String.Empty);
}
public void VersionedStringBuilder_VersionIsIncremented_WhenAppendVersionedStringBuilderIsCalled()
{
var builder = new VersionedStringBuilder("Hello, world!");
var value = new VersionedStringBuilder(" Goodbye, world!");
builder.Append(value);
TheResultingValue(builder.Version).ShouldBe(1);
TheResultingString(builder.ToString()).ShouldBe("Hello, world! Goodbye, world!");
}
/// <summary>
/// Appends the contents of the specified string builder at the end of the string builder.
/// </summary>
/// <param name="value">The value to append.</param>
/// <returns>The current instance of <see cref="VersionedStringBuilder"/>.</returns>
public VersionedStringBuilder Append(VersionedStringBuilder value)
{
if (value != null)
{
for (int i = 0; i < value.Length; i++)
{
stringBuilder.Append(value[i]);
}
version++;
}
return(this);
}
/// <summary>
/// Inserts the contents of the specified string builder at the specified index within the string builder.
/// </summary>
/// <param name="index">The index at which to insert the value.</param>
/// <param name="value">The value to insert.</param>
/// <returns>The current instance of <see cref="VersionedStringBuilder"/>.</returns>
public VersionedStringBuilder Insert(Int32 index, VersionedStringBuilder value)
{
if (value != null)
{
for (int i = 0; i < value.Length; i++)
{
stringBuilder.Insert(index + i, value[i]);
}
version++;
}
else
{
if (index < 0 || index > stringBuilder.Length)
{
throw new ArgumentOutOfRangeException("index");
}
}
return(this);
}
/// <summary>
/// Initializes a new instance of the <see cref="VersionedStringSource"/> structure that wraps the specified <see cref="VersionedStringBuilder"/> instance.
/// </summary>
/// <param name="sourceStringBuilder">The <see cref="VersionedStringBuilder"/> instance which is wrapped by this buffer.</param>
public VersionedStringSource(VersionedStringBuilder sourceStringBuilder)
{
this.sourceString = null;
this.sourceStringBuilder = sourceStringBuilder;
this.version = (sourceStringBuilder == null) ? 0 : sourceStringBuilder.Version;
}
/// <summary>
/// Inserts the contents of the specified string builder at the specified index within the string builder.
/// </summary>
/// <param name="index">The index at which to insert the value.</param>
/// <param name="value">The value to insert.</param>
/// <returns>The current instance of <see cref="VersionedStringBuilder"/>.</returns>
public VersionedStringBuilder Insert(Int32 index, VersionedStringBuilder value)
{
if (value != null)
{
for (int i = 0; i < value.Length; i++)
{
stringBuilder.Insert(index + i, value[i]);
}
version++;
}
else
{
if (index < 0 || index > stringBuilder.Length)
throw new ArgumentOutOfRangeException("index");
}
return this;
}
/// <summary>
/// Appends the contents of the specified string builder at the end of the string builder.
/// </summary>
/// <param name="value">The value to append.</param>
/// <returns>The current instance of <see cref="VersionedStringBuilder"/>.</returns>
public VersionedStringBuilder Append(VersionedStringBuilder value)
{
if (value != null)
{
for (int i = 0; i < value.Length; i++)
{
stringBuilder.Append(value[i]);
}
version++;
}
return this;
}
public void VersionedStringSource_ProducesCorrectString_WhenToStringIsCalled_AndSourceIsStringBuilder()
{
var data = new VersionedStringBuilder("Hello, world!");
var source = new VersionedStringSource(data);
TheResultingString(source.ToString()).ShouldBe("Hello, world!");
}
public void VersionedStringBuilder_VersionIsIncremented_WhenInsertCharIsCalled()
{
var builder = new VersionedStringBuilder("Hello, world!");
var value = '!';
builder.Insert(12, value);
TheResultingValue(builder.Version).ShouldBe(1);
TheResultingString(builder.ToString()).ShouldBe("Hello, world!!");
}
public void VersionedStringBuilder_VersionIsNotIncremented_WhenInsertVersionedStringSourceIsCalled_WithInvalidSource()
{
var builder = new VersionedStringBuilder("Hello, world!");
var value = new VersionedStringSource();
builder.Insert(5, value);
TheResultingValue(builder.Version).ShouldBe(0);
TheResultingString(builder.ToString()).ShouldBe("Hello, world!");
}
public void VersionedStringBuilder_VersionIsIncremented_WhenInsertVersionedStringSourceIsCalled_WithValidStringBuilderSource()
{
var builder = new VersionedStringBuilder("Hello, world!");
var source = new VersionedStringBuilder(" and goodbye");
var value = new VersionedStringSource(source);
builder.Insert(5, value);
TheResultingValue(builder.Version).ShouldBe(1);
TheResultingString(builder.ToString()).ShouldBe("Hello and goodbye, world!");
}
/// <summary>
/// Performs a pass-through conversion for an instance of the <see cref="VersionedStringBuilder"/> class.
/// </summary>
/// <param name="value">The string to convert.</param>
/// <param name="example">An example value which will cause the compiler to perform type inference.</param>
/// <returns>The value that was created.</returns>
protected VersionedStringBuilder __UPF_ConvertFromString(VersionedStringBuilder value, VersionedStringBuilder example)
{
return(value);
}