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test_npy.f90
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test_npy.f90
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module test_npy
use stdlib_kinds, only : int8, int16, int32, int64, sp, dp
use stdlib_io_npy, only : save_npy, load_npy
use testdrive, only : new_unittest, unittest_type, error_type, check
implicit none
private
public :: collect_npy
contains
!> Collect all exported unit tests
subroutine collect_npy(testsuite)
!> Collection of tests
type(unittest_type), allocatable, intent(out) :: testsuite(:)
testsuite = [ &
new_unittest("read-rdp-r2", test_read_rdp_rank2), &
new_unittest("read-rdp-r3", test_read_rdp_rank3), &
new_unittest("read-rsp-r1", test_read_rsp_rank1), &
new_unittest("read-rsp-r2", test_read_rsp_rank2), &
new_unittest("write-rdp-r2", test_write_rdp_rank2), &
new_unittest("write-rsp-r2", test_write_rsp_rank2), &
new_unittest("write-i2-r4", test_write_int16_rank4), &
new_unittest("invalid-magic-number", test_invalid_magic_number, should_fail=.true.), &
new_unittest("invalid-magic-string", test_invalid_magic_string, should_fail=.true.), &
new_unittest("invalid-major-version", test_invalid_major_version, should_fail=.true.), &
new_unittest("invalid-minor-version", test_invalid_minor_version, should_fail=.true.), &
new_unittest("invalid-header-len", test_invalid_header_len, should_fail=.true.), &
new_unittest("invalid-nul-byte", test_invalid_nul_byte, should_fail=.true.), &
new_unittest("invalid-key", test_invalid_key, should_fail=.true.), &
new_unittest("invalid-comma", test_invalid_comma, should_fail=.true.), &
new_unittest("invalid-string", test_invalid_string, should_fail=.true.), &
new_unittest("duplicate-descr", test_duplicate_descr, should_fail=.true.), &
new_unittest("missing-descr", test_missing_descr, should_fail=.true.), &
new_unittest("missing-fortran_order", test_missing_fortran_order, should_fail=.true.), &
new_unittest("missing-shape", test_missing_shape, should_fail=.true.), &
new_unittest("iomsg-deallocated", test_iomsg_deallocated) &
]
end subroutine collect_npy
subroutine test_read_rdp_rank2(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=*), parameter :: filename = ".test-rdp-r2.npy"
real(dp), allocatable :: input(:, :), output(:, :)
allocate(input(10, 4))
call random_number(input)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) input
close(io)
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_read_rdp_rank2
subroutine test_read_rsp_rank2(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f4', 'fortran_order': False, 'shape': (12, 5, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=*), parameter :: filename = ".test-rsp-r2.npy"
real(sp), allocatable :: input(:, :), output(:, :)
allocate(input(5, 12))
call random_number(input)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) input
close(io)
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_read_rsp_rank2
subroutine test_read_rdp_rank3(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 2, 2), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=*), parameter :: filename = ".test-rdp-r3.npy"
real(dp), allocatable :: input(:, :, :), output(:, :, :)
allocate(input(10, 2, 2))
call random_number(input)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) input
close(io)
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_read_rdp_rank3
subroutine test_read_rsp_rank1(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr':'<f4', 'shape' : (37 , ) , 'fortran_order': False} " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=*), parameter :: filename = ".test-rsp-r1.npy"
real(sp), allocatable :: input(:), output(:)
allocate(input(37))
call random_number(input)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) input
close(io)
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), 37)
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_read_rsp_rank1
subroutine test_write_rdp_rank2(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: stat
character(len=*), parameter :: filename = ".test-rdp-r2-rt.npy"
real(dp), allocatable :: input(:, :), output(:, :)
allocate(input(10, 4))
call random_number(input)
call save_npy(filename, input, stat)
call check(error, stat, "Writing of npy file failed")
if (allocated(error)) return
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_write_rdp_rank2
subroutine test_write_rsp_rank2(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: stat
character(len=*), parameter :: filename = ".test-rsp-r2-rt.npy"
real(sp), allocatable :: input(:, :), output(:, :)
allocate(input(12, 5))
call random_number(input)
call save_npy(filename, input, stat)
call check(error, stat, "Writing of npy file failed")
if (allocated(error)) return
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, any(abs(output - input) <= epsilon(1.0_dp)), &
"Precision loss when rereading array")
end subroutine test_write_rsp_rank2
subroutine test_write_int16_rank4(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: stat, i
character(len=*), parameter :: filename = ".test-i2-r4-rt.npy"
integer(int16), allocatable :: input(:, :, :, :), output(:, :, :, :)
input = reshape([(i*(i+1)/2, i = 1, 40)], [2, 5, 2, 2])
call save_npy(filename, input, stat)
call check(error, stat, "Writing of npy file failed")
if (allocated(error)) return
call load_npy(filename, output, stat)
call delete_file(filename)
call check(error, stat, "Reading of npy file failed")
if (allocated(error)) return
call check(error, size(output), size(input))
if (allocated(error)) return
call check(error, all(abs(output - input) == 0), &
"Precision loss when rereading array")
end subroutine test_write_int16_rank4
subroutine test_invalid_magic_number(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(50) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-magic-num.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_magic_number
subroutine test_invalid_magic_string(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "numpy" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-magic-str.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_magic_string
subroutine test_invalid_major_version(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(0) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-major-version.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_major_version
subroutine test_invalid_minor_version(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(9) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-minor-version.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_minor_version
subroutine test_invalid_header_len(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)-1) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-header-len.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_header_len
subroutine test_invalid_nul_byte(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'fortran_order': True, 'shape': (10, 4, ), } " // &
char(0) // char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-nul-byte.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_nul_byte
subroutine test_invalid_key(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'fortran_order': True, 'shape': (10, 4, ), 'descr': '<f8', 'x': 1, }" // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-key.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_key
subroutine test_invalid_comma(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'fortran_order': True,, 'shape': (10, 4, ), 'descr': '<f8', } " // &
" " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-comma.npy"
real(dp), allocatable :: array(:)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_comma
subroutine test_invalid_string(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'fortran_order': True, 'shape': (10, 4, ), 'descr': '<f8' '<f4', } " // &
" " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-string.npy"
real(dp), allocatable :: array(:)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_invalid_string
subroutine test_duplicate_descr(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'descr': '<f8', 'fortran_order': True, 'shape': (40, ), }"//&
" " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-invalid-descr.npy"
real(dp), allocatable :: array(:)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_duplicate_descr
subroutine test_missing_descr(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'fortran_order': True, 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-missing-descr.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_missing_descr
subroutine test_missing_fortran_order(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'descr': '<f8', 'shape': (10, 4, ), } " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-missing-fortran_order.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_missing_fortran_order
subroutine test_missing_shape(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
character(len=*), parameter :: dict = &
"{'fortran_order': True, 'descr': '<f8'} " // &
char(10)
character(len=*), parameter :: header = &
char(int(z"93")) // "NUMPY" // char(1) // char(0) // &
char(len(dict)) // char(0) // dict
integer :: io, stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-missing-shape.npy"
real(dp), allocatable :: array(:, :)
open(newunit=io, file=filename, form="unformatted", access="stream")
write(io) header
write(io) spread(0.0_dp, 1, 40)
close(io)
call load_npy(filename, array, stat, msg)
call delete_file(filename)
call check(error, stat, msg)
end subroutine test_missing_shape
subroutine test_iomsg_deallocated(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
integer :: stat
character(len=:), allocatable :: msg
character(len=*), parameter :: filename = ".test-iomsg-deallocated.npy"
real(sp), allocatable :: input(:, :), output(:, :)
msg = "This message should be deallocated."
allocate(input(12, 5))
call random_number(input)
call save_npy(filename, input, stat, msg)
call delete_file(filename)
call check(error,.not. allocated(msg), "Message wrongly allocated.")
end subroutine
subroutine delete_file(filename)
character(len=*), intent(in) :: filename
integer :: io
open(newunit=io, file=filename)
close(io, status="delete")
end subroutine delete_file
end module test_npy
program tester
use, intrinsic :: iso_fortran_env, only : error_unit
use testdrive, only : run_testsuite, new_testsuite, testsuite_type
use test_npy, only : collect_npy
implicit none
integer :: stat, is
type(testsuite_type), allocatable :: testsuites(:)
character(len=*), parameter :: fmt = '("#", *(1x, a))'
stat = 0
testsuites = [ &
new_testsuite("npy", collect_npy) &
]
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