randoop.sequence

Class Value

java.lang.Object

randoop.sequence.Value

public class Value
extends java.lang.Object

Utility methods to work with values in test sequences.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.Map<java.lang.String,java.lang.Boolean>	escapedStringLengthOkCached Used to increase performance of stringLengthOk method.
private static java.util.regex.Pattern	OBJECT_TOSTRING_PATTERN The pattern for strings that look like the output of a call to Object.toString().

Constructor Summary

Constructors

Constructor and Description
Value()

Method Summary

Modifier and Type	Method and Description
static boolean	arrayLengthOk(java.lang.Object a) Returns true if the given array is shorter than the --string-maxlen=N parameter.
static boolean	escapedStringLengthOk(java.lang.String s) Returns true if the given string, when quoted for inclusion in a Java program, is no longer than the --string-maxlen=N parameter.
static boolean	isUnassertableString(java.lang.Object o) Returns true if the value is a string that may NOT be asserted over, because it is (likely to be) nondeterministic or is too long.
static boolean	lastValueSizeOk(ExecutableSequence eseq) Returns true if the value returned by the last statement is not too large.
static boolean	looksLikeObjectToString(java.lang.String s) Returns true if the given string looks like it came from a call of Object.toString(); in other words, it contains "@<em>hex</em>".
static boolean	stringLengthOk(java.lang.String s) Returns true if the given string is no longer than the --string-maxlen=N parameter.
static java.lang.String	toCodeString(java.lang.Object value) Given a primitive, boxed primitive, String, Enum, or Class, or the value null, returns a String that can be used in Java source to represent it.
static boolean	valueSizeOk(java.lang.Object v) Returns true if the given value is not longer than the --string-maxlen=N parameter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OBJECT_TOSTRING_PATTERN

private static final java.util.regex.Pattern OBJECT_TOSTRING_PATTERN

The pattern for strings that look like the output of a call to Object.toString().

This regex is more efficient than a more complete one that matches against "<em>classname</em>@<em>hex</em>". This regex almost always works and is a faster check.

escapedStringLengthOkCached

private static java.util.Map<java.lang.String,java.lang.Boolean> escapedStringLengthOkCached

Used to increase performance of stringLengthOk method.

Constructor Detail

Value

public Value()

Method Detail

toCodeString

public static java.lang.String toCodeString(java.lang.Object value)

Given a primitive, boxed primitive, String, Enum, or Class, or the value null, returns a String that can be used in Java source to represent it.

Parameters:

value - the value to create a String representation for. The value's type must be a primitive type, a String, Enum, Class, or null.

Returns:

a string representing code for the given value

isUnassertableString

public static boolean isUnassertableString(java.lang.Object o)

Returns true if the value is a string that may NOT be asserted over, because it is (likely to be) nondeterministic or is too long.

Parameters:

o - the value to test, which may or may not be a string

Returns:

true if the value is an unassertable string, false if not a string, false if a string that may be asserted over

looksLikeObjectToString

public static boolean looksLikeObjectToString(java.lang.String s)

Returns true if the given string looks like it came from a call of Object.toString(); in other words, it contains "@<em>hex</em>". Such strings are rarely useful in generation because they contain non-reproducible hash strings.

Parameters:

s - the string

Returns:

true if string appears to be default toString output, false otherwise

stringLengthOk

public static boolean stringLengthOk(java.lang.String s)

Returns true if the given string is no longer than the --string-maxlen=N parameter.

Parameters:

s - the string

Returns:

true if the string length is reasonable for generated tests, false otherwise

See Also:

GenInputsAbstract.string_maxlen

escapedStringLengthOk

public static boolean escapedStringLengthOk(java.lang.String s)

Returns true if the given string, when quoted for inclusion in a Java program, is no longer than the --string-maxlen=N parameter.

If Randoop generates tests using strings that are too long, this can result in non-compilable tests due to the JVM's limit on the length of a string.

Parameters:

s - the string

Returns:

true if the string length is reasonable for generated tests, false otherwise

See Also:

GenInputsAbstract.string_maxlen

arrayLengthOk

public static boolean arrayLengthOk(java.lang.Object a)

Returns true if the given array is shorter than the --string-maxlen=N parameter.

Parameters:

a - the string

Returns:

true if the array length is less than the bound

valueSizeOk

public static boolean valueSizeOk(java.lang.Object v)

Returns true if the given value is not longer than the --string-maxlen=N parameter.

Parameters:

v - a value

Returns:

true if the value's size is less than the bound

lastValueSizeOk

public static boolean lastValueSizeOk(ExecutableSequence eseq)

Returns true if the value returned by the last statement is not too large.

Parameters:

eseq - an executable sequence that has been executed

Returns:

true if the final result value's size is less than the bound