Class RandomExtensions
Extensions to in order to randomly generate
types and specially formatted strings that assist with testing
custom extensions to Lucene.Net.
Inheritance
System.Object
RandomExtensions
Assembly: Lucene.Net.TestFramework.dll
Syntax
public static class RandomExtensions : object
Methods
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NextAnalysisString(Random, Int32, Boolean)
Declaration
public static string NextAnalysisString(this Random random, int maxLength, bool simple)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
maxLength |
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| System.Boolean |
simple |
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Returns
| Type |
Description |
| System.String |
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NextBoolean(Random)
Generates a random , with a random distribution of
approximately 50/50.
Declaration
public static bool NextBoolean(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
This .
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Returns
| Type |
Description |
| System.Boolean |
A random .
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NextFilterStrategy(Random)
Declaration
public static FilteredQuery.FilterStrategy NextFilterStrategy(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
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Returns
| Type |
Description |
| FilteredQuery.FilterStrategy |
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NextFixedByteLengthUnicodeString(Random, Int32)
Returns random string, with a given UTF-8 byte length.
Declaration
public static string NextFixedByteLengthUnicodeString(this Random random, int length)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.Int32 |
length |
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Returns
| Type |
Description |
| System.String |
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NextFixedLengthUnicodeString(Random, Char[], Int32, Int32)
Fills provided char[] with valid random unicode code
unit sequence.
Declaration
public static void NextFixedLengthUnicodeString(this Random random, char[] chars, int offset, int length)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.Char[] |
chars |
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| System.Int32 |
offset |
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| System.Int32 |
length |
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NextFrom<T>(Random, ICollection<T>)
Pick a random object from the collection.
Declaration
public static T NextFrom<T>(this Random random, ICollection<T> collection)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| ICollection<T> |
collection |
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Returns
Type Parameters
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NextHtmlishString(Random, Int32)
Returns a random HTML-like string.
Declaration
public static string NextHtmlishString(this Random random, int numElements)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.Int32 |
numElements |
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Returns
| Type |
Description |
| System.String |
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NextInt64(Random)
Declaration
public static long NextInt64(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
This .
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Returns
| Type |
Description |
| System.Int64 |
A random .
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NextInt64(Random, Int64, Int64)
Generates a random . start and end are BOTH inclusive.
Declaration
public static long NextInt64(this Random random, long start, long end)
Parameters
| Type |
Name |
Description |
| Random |
random |
This .
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| System.Int64 |
start |
The inclusive start.
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| System.Int64 |
end |
The inclusive end.
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Returns
| Type |
Description |
| System.Int64 |
A random .
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NextRealisticUnicodeString(Random)
Returns random string of length between 0-20 codepoints, all codepoints within the same unicode block.
Declaration
public static string NextRealisticUnicodeString(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
Returns
| Type |
Description |
| System.String |
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NextRealisticUnicodeString(Random, Int32)
Returns random string of length up to maxLength codepoints, all codepoints within the same unicode block.
Declaration
public static string NextRealisticUnicodeString(this Random random, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.Int32 |
maxLength |
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Returns
| Type |
Description |
| System.String |
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NextRealisticUnicodeString(Random, Int32, Int32)
Returns random string of length between min and max codepoints, all codepoints within the same unicode block.
Declaration
public static string NextRealisticUnicodeString(this Random random, int minLength, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
minLength |
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| System.Int32 |
maxLength |
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Returns
| Type |
Description |
| System.String |
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NextRecasedString(Random, String)
Randomly upcases, downcases, or leaves intact each code point in the given string.
Declaration
public static string NextRecasedString(this Random random, string str)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.String |
str |
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Returns
| Type |
Description |
| System.String |
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NextRegex(Random)
Returns a valid (compiling) instance with random stuff inside. Be careful
when applying random patterns to longer strings as certain types of patterns
may explode into exponential times in backtracking implementations (such as Java's).
Declaration
public static Regex NextRegex(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
Returns
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NextRegexishString(Random)
Returns a thats "regexish" (contains lots of operators typically found in regular expressions)
If you call this enough times, you might get a valid regex!
Declaration
public static string NextRegexishString(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
Returns
| Type |
Description |
| System.String |
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NextRegexishString(Random, Int32)
Returns a thats "regexish" (contains lots of operators typically found in regular expressions)
If you call this enough times, you might get a valid regex!
Note: to avoid practically endless backtracking patterns we replace asterisk and plus
operators with bounded repetitions. See LUCENE-4111 for more info.
Declaration
public static string NextRegexishString(this Random random, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
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| System.Int32 |
maxLength |
A hint about maximum length of the regexpish string. It may be exceeded by a few characters.
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Returns
| Type |
Description |
| System.String |
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NextSimpleString(Random)
Returns a random string consisting only of lowercase characters 'a' through 'z',
between 0 and 20 characters in length.
Declaration
public static string NextSimpleString(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
Returns
| Type |
Description |
| System.String |
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NextSimpleString(Random, Int32)
Returns a random string consisting only of lowercase characters 'a' through 'z'.
Declaration
public static string NextSimpleString(this Random random, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
maxLength |
|
Returns
| Type |
Description |
| System.String |
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NextSimpleString(Random, Int32, Int32)
Returns a random string consisting only of lowercase characters 'a' through 'z'.
Declaration
public static string NextSimpleString(this Random random, int minLength, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
minLength |
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| System.Int32 |
maxLength |
|
Returns
| Type |
Description |
| System.String |
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NextSimpleStringRange(Random, Char, Char, Int32)
Returns a random string consisting only of characters between minChar and maxChar.
Declaration
public static string NextSimpleStringRange(this Random random, char minChar, char maxChar, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Char |
minChar |
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| System.Char |
maxChar |
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| System.Int32 |
maxLength |
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Returns
| Type |
Description |
| System.String |
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NextSingle(Random)
Declaration
public static float NextSingle(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
This .
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Returns
| Type |
Description |
| System.Single |
A random .
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NextSubString(Random, Int32, Boolean)
Declaration
public static string NextSubString(this Random random, int wordLength, bool simple)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
wordLength |
|
| System.Boolean |
simple |
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Returns
| Type |
Description |
| System.String |
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NextUnicodeString(Random)
Returns random string, including full unicode range.
Declaration
public static string NextUnicodeString(this Random random)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
Returns
| Type |
Description |
| System.String |
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NextUnicodeString(Random, Int32)
Returns a random string up to a certain length.
Declaration
public static string NextUnicodeString(this Random random, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
maxLength |
|
Returns
| Type |
Description |
| System.String |
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NextWhitespace(Random, Int32, Int32)
Returns a random string in the specified length range consisting
entirely of whitespace characters.
Declaration
public static string NextWhitespace(this Random random, int minLength, int maxLength)
Parameters
| Type |
Name |
Description |
| Random |
random |
|
| System.Int32 |
minLength |
|
| System.Int32 |
maxLength |
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Returns
| Type |
Description |
| System.String |
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See Also