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module test_hash_functions
use testdrive, only : new_unittest, unittest_type, error_type, check, &
skip_test
use stdlib_kinds, only: int8, int32, int64, dp
use stdlib_hash_32bit, only: little_endian &
, nmhash32 &
, nmhash32x &
, water_hash
use stdlib_hash_64bit, only: pengy_hash, spooky_hash
implicit none
private
public :: collect_hash_functions
public :: generate_key_array
integer, parameter :: size_key_array = 2048
integer(int32), parameter :: nm_seed = int( z'deadbeef', int32 )
integer(int64), parameter :: water_seed = int( z'deadbeef1eadbeef', int64 )
integer(int32), parameter :: pengy_seed = int( z'deadbeef', int32 )
integer(int64), parameter :: spooky_seed(2) = [ water_seed, water_seed ]
interface read_array
module procedure read_array_int8
module procedure read_array_int32
module procedure read_array_int64
module procedure read_2darray_int64
end interface
contains
!> Collect all exported unit tests
subroutine collect_hash_functions(testsuite)
!> Collection of tests
type(unittest_type), allocatable, intent(out) :: testsuite(:)
testsuite = [ &
new_unittest("little_endian", test_little_endian) &
, new_unittest("nmhash32", test_nmhash32) &
, new_unittest("nmhash32x", test_nmhash32x) &
, new_unittest("water_hash", test_water_hash) &
, new_unittest("pengy_hash", test_pengy_hash) &
, new_unittest("spooky_hash", test_spooky_hash) &
]
end subroutine collect_hash_functions
subroutine test_little_endian(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
! Test for endianness
call check(error, little_endian, "The processor is not Little-Endian")
if (allocated(error)) return
end subroutine test_little_endian
subroutine test_nmhash32(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: index
integer(int8) :: key_array(size_key_array)
integer(int32) :: c_hash(0:size_key_array)
call read_array("key_array.bin", key_array )
! Read hash array generated from key array by the C version of nmhash32
call read_array("c_nmhash32_array.bin", c_hash)
do index=0, size_key_array
call check(error, c_hash(index) == nmhash32(key_array(1:index), nm_seed) &
, "NMHASH32 failed")
if (allocated(error)) return
end do
end subroutine test_nmhash32
subroutine test_nmhash32x(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: index
integer(int8) :: key_array(size_key_array)
integer(int32) :: c_hash(0:size_key_array)
call read_array("key_array.bin", key_array )
! Read hash array generated from key array by the C version of nmhash32x
call read_array("c_nmhash32x_array.bin", c_hash)
do index=0, size_key_array
call check(error, c_hash(index) == nmhash32x(key_array(1:index), nm_seed) &
, "NMHASH32X failed")
if (allocated(error)) return
end do
end subroutine test_nmhash32x
subroutine test_water_hash(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: index
integer(int8) :: key_array(size_key_array)
integer(int32) :: c_hash(0:size_key_array)
call read_array("key_array.bin", key_array )
! Read hash array generated from key array by the C version of water_hash
call read_array("c_water_hash_array.bin", c_hash)
do index=0, size_key_array
call check(error, c_hash(index) == water_hash(key_array(1:index), water_seed) &
, "WATER_HASH failed")
if (allocated(error)) return
end do
end subroutine test_water_hash
subroutine test_pengy_hash(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: index
integer(int8) :: key_array(size_key_array)
integer(int64) :: c_hash(0:size_key_array)
call read_array("key_array.bin", key_array )
! Read hash array generated from key array by the C version of pengy_hash
call read_array("c_pengy_hash_array.bin", c_hash)
do index=0, size_key_array
call check(error, c_hash(index) == pengy_hash(key_array(1:index), pengy_seed) &
, "PENGY_HASH failed")
if (allocated(error)) return
end do
end subroutine test_pengy_hash
subroutine test_spooky_hash(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: index
integer(int8) :: key_array(size_key_array)
integer(int64) :: c_hash(0:1, 0:size_key_array)
call read_array("key_array.bin", key_array )
! Read hash array generated from key array by the C version of spooky_hash
call read_array("c_spooky_hash_array.bin", c_hash)
do index=0, size_key_array
call check(error, all(c_hash(:, index) == spooky_hash(key_array(1:index), spooky_seed)) &
, "SPOOKY_HASH failed")
if (allocated(error)) return
end do
end subroutine test_spooky_hash
subroutine generate_key_array()
integer :: i, lun
integer(int8) :: key_array(size_key_array)
integer(int32) :: dummy(size_key_array/4)
real(dp) :: rand(size_key_array/4)
! Create key array
call random_number( rand )
do i=1, size_key_array/4
dummy(i) = floor( rand(i) * 2_int64**32 - 2_int64**31, kind=int32 )
end do
key_array = transfer( dummy, 0_int8, size_key_array )
open(newunit=lun, file="key_array.bin", form="unformatted", &
access="stream", status="replace", action="write")
write(lun) key_array
close(lun)
end subroutine generate_key_array
subroutine read_array_int8(filename, res)
character(*), intent(in) :: filename
integer(int8), intent(out) :: res(:)
integer :: lun
open(newunit=lun, file=filename, form="unformatted", &
access="stream", status="old", action="read", err = 9908)
read(lun) res
close(lun)
return
9908 res = 0
end subroutine read_array_int8
subroutine read_array_int32(filename, res)
character(*), intent(in) :: filename
integer(int32), intent(out) :: res(:)
integer :: lun
open(newunit=lun, file=filename, form="unformatted", &
access="stream", status="old", action="read", err = 9908)
read(lun) res
close(lun)
return
9908 res = 0
end subroutine read_array_int32
subroutine read_array_int64(filename, res)
character(*), intent(in) :: filename
integer(int64), intent(out) :: res(:)
integer :: lun
open(newunit=lun, file=filename, form="unformatted", &
access="stream", status="old", action="read", err = 9908)
read(lun) res
close(lun)
return
9908 res = 0
end subroutine read_array_int64
subroutine read_2darray_int64(filename, res)
character(*), intent(in) :: filename
integer(int64), intent(out) :: res(:,:)
integer :: lun
open(newunit=lun, file=filename, form="unformatted", &
access="stream", status="old", action="read", err = 9908)
read(lun) res
close(lun)
return
9908 res = 0
end subroutine read_2darray_int64
end module
module modchash
use, intrinsic :: ISO_C_Binding
implicit none
private
public :: generate_all_c_hash
interface
function generate_all_c_hash() result(error) bind(C,name = "generate_all_c_hash")
import C_int
integer(C_int) :: error
end function
end interface
end module
program tester
use, intrinsic :: iso_fortran_env, only : error_unit
use, intrinsic :: ISO_C_Binding, only : C_int
use testdrive, only : run_testsuite, new_testsuite, testsuite_type
use test_hash_functions, only : collect_hash_functions, generate_key_array
use modchash, only: generate_all_c_hash
implicit none
integer(C_int) :: error
integer :: stat, is
type(testsuite_type), allocatable :: testsuites(:)
character(len=*), parameter :: fmt = '("#", *(1x, a))'
call generate_key_array()
error = generate_all_c_hash()
stat = 0
testsuites = [ &
new_testsuite("hash_functions", collect_hash_functions) &
]
do is = 1, size(testsuites)
write(error_unit, fmt) "Testing:", testsuites(is)%name
call run_testsuite(testsuites(is)%collect, error_unit, stat)
end do
if (stat > 0) then
write(error_unit, '(i0, 1x, a)') stat, "test(s) failed!"
error stop
end if
end program
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