13.3. Faker

Random test-data generator.

The Faker struct produces random values for every built-in type (integers, floats, vectors, strings, dates, booleans) using configurable ranges. Used by fuzzer for fuzz testing.

All functions and symbols are in “faker” module, use require to get access to it.

require daslib/faker

13.3.1. Structures

Faker

Instance of the faker with all the settings inside.

Fields:

• min_year : uint = 0x7bc - minimal faker’s year

• total_years : uint = 0x2a - faker year’s range

• rnd : iterator<uint> = each_random_uint(13) - fakers random number generator

• max_long_string : uint = 0x1000 - maximal length of generated string

13.3.2. Constructor

• Faker (var rng: iterator<uint>) : Faker

Faker(rng: iterator<uint>): Faker

Constructs a Faker instance with the given random number generator.

Arguments:

• rng : iterator<uint>

13.3.3. Random values

• random_double (var faker: Faker) : double

• random_float (var faker: Faker) : float

• random_float2 (var faker: Faker) : float2

• random_float3 (var faker: Faker) : float3

• random_float3x3 (var faker: Faker) : float3x3

• random_float3x4 (var faker: Faker) : float3x4

• random_float4 (var faker: Faker) : float4

• random_float4x4 (var faker: Faker) : float4x4

• random_int (var faker: Faker) : int

• random_int16 (var faker: Faker) : int16

• random_int2 (var faker: Faker) : int2

• random_int3 (var faker: Faker) : int3

• random_int4 (var faker: Faker) : int4

• random_int64 (var faker: Faker) : int64

• random_int8 (var faker: Faker) : int8

• random_range (var faker: Faker) : range

• random_range64 (var faker: Faker) : range64

• random_uint (var faker: Faker) : uint

• random_uint16 (var faker: Faker) : uint16

• random_uint2 (var faker: Faker) : uint2

• random_uint3 (var faker: Faker) : uint3

• random_uint4 (var faker: Faker) : uint4

• random_uint64 (var faker: Faker) : uint64

• random_uint8 (var faker: Faker) : uint8

• random_urange (var faker: Faker) : urange

• random_urange64 (var faker: Faker) : urange64

random_double(faker: Faker): double

Generates random double.

Arguments:

• faker : Faker

random_float(faker: Faker): float

Generates random float.

Arguments:

• faker : Faker

random_float2(faker: Faker): float2

Generates random float2.

Arguments:

• faker : Faker

random_float3(faker: Faker): float3

Generates random float3.

Arguments:

• faker : Faker

random_float3x3(faker: Faker): float3x3

Generates random float3x3.

Arguments:

• faker : Faker

random_float3x4(faker: Faker): float3x4

Generates random float3x4.

Arguments:

• faker : Faker

random_float4(faker: Faker): float4

Generates random float4.

Arguments:

• faker : Faker

random_float4x4(faker: Faker): float4x4

Generates random float4x4.

Arguments:

• faker : Faker

random_int(faker: Faker): int

Generates random integer.

Arguments:

• faker : Faker

random_int16(faker: Faker): int16

Generates random int16.

Arguments:

• faker : Faker

random_int2(faker: Faker): int2

Generates random int2.

Arguments:

• faker : Faker

random_int3(faker: Faker): int3

Generates random int3.

Arguments:

• faker : Faker

random_int4(faker: Faker): int4

Generates random int4.

Arguments:

• faker : Faker

random_int64(faker: Faker): int64

Generates random int64

Arguments:

• faker : Faker

random_int8(faker: Faker): int8

Generates random int8.

Arguments:

• faker : Faker

random_range(faker: Faker): range

Generates random range.

Arguments:

• faker : Faker

random_range64(faker: Faker): range64

Generates random range64.

Arguments:

• faker : Faker

random_uint(faker: Faker): uint

Generates random unsigned integer.

Arguments:

• faker : Faker

random_uint16(faker: Faker): uint16

Generates random uint16.

Arguments:

• faker : Faker

random_uint2(faker: Faker): uint2

Generates random uint2.

Arguments:

• faker : Faker

random_uint3(faker: Faker): uint3

Generates random uint3.

Arguments:

• faker : Faker

random_uint4(faker: Faker): uint4

Generates random uint4.

Arguments:

• faker : Faker

random_uint64(faker: Faker): uint64

Generates random uint64

Arguments:

• faker : Faker

random_uint8(faker: Faker): uint8

Generates random uint8.

Arguments:

• faker : Faker

random_urange(faker: Faker): urange

Generates random urange.

Arguments:

• faker : Faker

random_urange64(faker: Faker): urange64

Generates random urange64.

Arguments:

• faker : Faker

13.3.4. Random strings

• any_char (var faker: Faker) : int

• any_enum (var faker: Faker; enum_value: auto(TT)) : TT

• any_file_name (var faker: Faker) : string

• any_float (var faker: Faker) : string

• any_hex (var faker: Faker) : string

• any_int (var faker: Faker) : string

• any_set (var faker: Faker) : uint[8]

• any_string (var faker: Faker) : string

• any_uint (var faker: Faker) : string

• long_string (var faker: Faker) : string

• number (var faker: Faker) : string

• positive_int (var faker: Faker) : string

any_char(faker: Faker): int

Generates random char. (1 to 255 range)

Arguments:

• faker : Faker

any_enum(faker: Faker; enum_value: auto(TT)): TT

Generates random enumeration value.

Arguments:

• faker : Faker

• enum_value : auto(TT)

any_file_name(faker: Faker): string

Generates random file name.

Arguments:

• faker : Faker

any_float(faker: Faker): string

Generates random float string.

Arguments:

• faker : Faker

any_hex(faker: Faker): string

Generates random integer hex string.

Arguments:

• faker : Faker

any_int(faker: Faker): string

Generates random integer string.

Arguments:

• faker : Faker

any_set(faker: Faker): uint[8]

Generates random set (uint[8])

Arguments:

• faker : Faker

any_string(faker: Faker): string

Generates a string of random characters. The string is anywhere between 0 and regex::re_gen_get_rep_limit() characters long.

Arguments:

• faker : Faker

any_uint(faker: Faker): string

Generates random unsigned integer string.

Arguments:

• faker : Faker

long_string(faker: Faker): string

Generates a long string of random characters. The string is anywhere between 0 and faker.max_long_string characters long.

Arguments:

• faker : Faker

number(faker: Faker): string

Generates random number string.

Arguments:

• faker : Faker

positive_int(faker: Faker): string

Generates random positive integer string.

Arguments:

• faker : Faker

13.3.5. Date and time

• date (var faker: Faker) : string

• day (var faker: Faker) : string

• is_leap_year (year: uint) : bool

• month (var faker: Faker) : string

• week_day (year: int; month: int; day: int) : int

• week_day (year: uint; month: uint; day: uint) : int

date(faker: Faker): string

Generates random date string.

Arguments:

• faker : Faker

day(faker: Faker): string

Generates random day string.

Arguments:

• faker : Faker

is_leap_year(year: uint): bool

Returns true if year is leap year.

Arguments:

• year : uint

month(faker: Faker): string

Generates random month string.

Arguments:

• faker : Faker

13.3.5.1. week_day

week_day(year: int; month: int; day: int): int

Returns week day for given date.

Arguments:

• year : int

• month : int

• day : int

week_day(year: uint; month: uint; day: uint): int