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test_loadtxt.f90
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module test_loadtxt
use stdlib_kinds, only: int32, sp, dp
use stdlib_io, only: loadtxt, savetxt
use testdrive, only: new_unittest, unittest_type, error_type, check
implicit none
private
public :: collect_loadtxt
contains
!> Collect all exported unit tests
subroutine collect_loadtxt(testsuite)
!> Collection of tests
type(unittest_type), allocatable, intent(out) :: testsuite(:)
testsuite = [ &
new_unittest("loadtxt_int32", test_loadtxt_int32), &
new_unittest("loadtxt_sp", test_loadtxt_sp), &
new_unittest("loadtxt_sp_huge", test_loadtxt_sp_huge), &
new_unittest("loadtxt_sp_tiny", test_loadtxt_sp_tiny), &
new_unittest("loadtxt_dp", test_loadtxt_dp), &
new_unittest("loadtxt_dp_max_skip", test_loadtxt_dp_max_skip), &
new_unittest("loadtxt_dp_huge", test_loadtxt_dp_huge), &
new_unittest("loadtxt_dp_tiny", test_loadtxt_dp_tiny), &
new_unittest("loadtxt_complex", test_loadtxt_complex) &
]
end subroutine collect_loadtxt
subroutine test_loadtxt_int32(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer(int32), allocatable :: input(:,:), expected(:,:)
real(sp), allocatable :: harvest(:,:)
integer :: n
allocate(harvest(10,10))
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(harvest)
input = int(harvest * 100)
call savetxt('test_int32.txt', input)
call loadtxt('test_int32.txt', expected)
call check(error, all(input == expected),'Default list directed read failed')
if (allocated(error)) return
call loadtxt('test_int32.txt', expected, fmt='*')
call check(error, all(input == expected),'User specified list directed read faile')
if (allocated(error)) return
call savetxt('test_int32.txt', input, delimiter=',')
call loadtxt('test_int32.txt', expected, delimiter=',')
call check(error, all(input == expected),'User specified delimiter `,` read failed')
if (allocated(error)) return
call savetxt('test_int32.txt', input, delimiter='-')
call loadtxt('test_int32.txt', expected, delimiter='-')
call check(error, all(input == expected),'User specified delimiter `-` read failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_int32
subroutine test_loadtxt_sp(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(sp), allocatable :: input(:,:), expected(:,:)
character(len=*), parameter :: FMT_REAL_SP = '(es15.8e2)'
integer :: n
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = input - 0.5
call savetxt('test_sp.txt', input)
call loadtxt('test_sp.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_sp.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_sp.txt', expected, fmt="(*"//FMT_REAL_sp(1:len(FMT_REAL_sp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
call savetxt('test_sp.txt', input, delimiter=',')
call loadtxt('test_sp.txt', expected, delimiter=',')
call check(error, all(input == expected),'User specified delimiter `,` read failed')
if (allocated(error)) return
call savetxt('test_sp.txt', input, delimiter=';')
call loadtxt('test_sp.txt', expected, delimiter=';')
call check(error, all(input == expected),'User specified delimiter `;` read failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_sp
subroutine test_loadtxt_sp_huge(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(sp), allocatable :: input(:,:), expected(:,:)
integer :: n
character(len=*), parameter :: FMT_REAL_SP = '(es15.8e2)'
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = (input - 0.5) * huge(input)
call savetxt('test_sp_huge.txt', input)
call loadtxt('test_sp_huge.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_sp_huge.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_sp_huge.txt', expected, fmt="(*"//FMT_REAL_sp(1:len(FMT_REAL_sp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_sp_huge
subroutine test_loadtxt_sp_tiny(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(sp), allocatable :: input(:,:), expected(:,:)
integer :: n
character(len=*), parameter :: FMT_REAL_SP = '(es15.8e2)'
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = (input - 0.5) * tiny(input)
call savetxt('test_sp_tiny.txt', input)
call loadtxt('test_sp_tiny.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_sp_tiny.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_sp_tiny.txt', expected, fmt="(*"//FMT_REAL_sp(1:len(FMT_REAL_sp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_sp_tiny
subroutine test_loadtxt_dp(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(dp), allocatable :: input(:,:), expected(:,:)
integer :: n
character(len=*), parameter :: FMT_REAL_DP = '(es24.16e3)'
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = input - 0.5
call savetxt('test_dp.txt', input)
call loadtxt('test_dp.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_dp.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_dp.txt', expected, fmt="(*"//FMT_REAL_dp(1:len(FMT_REAL_dp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
call savetxt('test_dp.txt', input, delimiter=',')
call loadtxt('test_dp.txt', expected, delimiter=',')
call check(error, all(input == expected),'User specified delimiter read failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_dp
subroutine test_loadtxt_dp_max_skip(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(dp), allocatable :: input(:,:), expected(:,:)
integer :: n, m
character(len=*), parameter :: FMT_REAL_DP = '(es24.16e3)'
allocate(input(10,10))
do m = 0, 5
do n = 1, 11
call random_number(input)
input = input - 0.5
call savetxt('test_dp_max_skip.txt', input)
call loadtxt('test_dp_max_skip.txt', expected, skiprows=m, max_rows=n)
call check(error, all(input(m+1:min(n+m,10),:) == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_dp_max_skip.txt', expected, skiprows=m, max_rows=n, fmt='*')
call check(error, all(input(m+1:min(n+m,10),:) == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_dp_max_skip.txt', expected, fmt="(*"//FMT_REAL_dp(1:len(FMT_REAL_dp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
deallocate(expected)
if (allocated(error)) return
end do
end do
end subroutine test_loadtxt_dp_max_skip
subroutine test_loadtxt_dp_huge(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(dp), allocatable :: input(:,:), expected(:,:)
integer :: n
character(len=*), parameter :: FMT_REAL_DP = '(es24.16e3)'
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = (input - 0.5) * huge(input)
call savetxt('test_dp_huge.txt', input)
call loadtxt('test_dp_huge.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_dp_huge.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_dp_huge.txt', expected, fmt="(*"//FMT_REAL_dp(1:len(FMT_REAL_dp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_dp_huge
subroutine test_loadtxt_dp_tiny(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
real(dp), allocatable :: input(:,:), expected(:,:)
integer :: n
character(len=*), parameter :: FMT_REAL_DP = '(es24.16e3)'
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(input)
input = (input - 0.5) * tiny(input)
call savetxt('test_dp_tiny.txt', input)
call loadtxt('test_dp_tiny.txt', expected)
call check(error, all(input == expected),'Default format read failed')
if (allocated(error)) return
call loadtxt('test_dp_tiny.txt', expected, fmt='*')
call check(error, all(input == expected),'List directed read failed')
if (allocated(error)) return
call loadtxt('test_dp_tiny.txt', expected, fmt="(*"//FMT_REAL_dp(1:len(FMT_REAL_dp)-1)//",1x))")
call check(error, all(input == expected),'User specified format failed')
if (allocated(error)) return
end do
end subroutine test_loadtxt_dp_tiny
subroutine test_loadtxt_complex(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
complex(dp), allocatable :: input(:,:), expected(:,:)
real(dp), allocatable :: re(:,:), im(:,:)
integer :: n
character(len=*), parameter :: FMT_COMPLEX_DP = '(es24.16e3,1x,es24.16e3)'
allocate(re(10,10))
allocate(im(10,10))
allocate(input(10,10))
allocate(expected(10,10))
do n = 1, 10
call random_number(re)
call random_number(im)
input = cmplx(re, im)
call savetxt('test_complex.txt', input)
call loadtxt('test_complex.txt', expected)
call check(error, all(input == expected))
call loadtxt('test_complex.txt', expected, fmt="(*"//FMT_COMPLEX_dp(1:len(FMT_COMPLEX_dp)-1)//",1x))")
call check(error, all(input == expected))
if (allocated(error)) return
call savetxt('test_complex.txt', input, delimiter=',')
call loadtxt('test_complex.txt', expected, delimiter=',')
call check(error, all(input == expected))
if (allocated(error)) return
call savetxt('test_complex.txt', input, delimiter=';')
call loadtxt('test_complex.txt', expected, delimiter=';')
call check(error, all(input == expected))
if (allocated(error)) return
end do
end subroutine test_loadtxt_complex
end module test_loadtxt
program tester
use, intrinsic :: iso_fortran_env, only : error_unit
use testdrive, only : run_testsuite, new_testsuite, testsuite_type
use test_loadtxt, only : collect_loadtxt
implicit none
integer :: stat, is
type(testsuite_type), allocatable :: testsuites(:)
character(len=*), parameter :: fmt = '("#", *(1x, a))'
stat = 0
testsuites = [ &
new_testsuite("loadtxt", collect_loadtxt) &
]
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 tester