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test_string_to_string.f90
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test_string_to_string.f90
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! SPDX-Identifier: MIT
module test_string_to_string
use stdlib_strings, only: to_string, starts_with
use testdrive, only : new_unittest, unittest_type, error_type, check
use stdlib_optval, only: optval
implicit none
contains
!> Collect all exported unit tests
subroutine collect_string_to_string(testsuite)
!> Collection of tests
type(unittest_type), allocatable, intent(out) :: testsuite(:)
testsuite = [ &
new_unittest("to_string-complex", test_to_string_complex), &
new_unittest("to_string-integer", test_to_string_integer), &
new_unittest("to_string-logical", test_to_string_logical), &
new_unittest("to_string-real", test_to_string_real), &
new_unittest("to_string-limit-i1", test_string_i1), &
new_unittest("to_string-limit-i2", test_string_i2), &
new_unittest("to_string-limit-i4", test_string_i4), &
new_unittest("to_string-limit-i8", test_string_i8) &
]
end subroutine collect_string_to_string
subroutine check_formatter(error, actual, expected, description, partial)
type(error_type), allocatable, intent(out) :: error
character(len=*), intent(in) :: actual, expected, description
logical, intent(in), optional :: partial
logical :: stat
character(len=:), allocatable :: msg
if (optval(partial, .false.)) then
stat = starts_with(actual, expected)
else
stat = actual == expected
end if
if (.not. stat) then
msg = description // new_line("a") // &
& "Expected: '" // expected // "' but got '" // actual // "'"
else
print '(" - ", a, /, " Result: ''", a, "''")', description, actual
end if
call check(error, stat, msg)
end subroutine check_formatter
subroutine test_to_string_complex(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check_formatter(error, to_string((1, 1)), "(1.0", &
& "Default formatter for complex number", partial=.true.)
if (allocated(error)) return
call check_formatter(error, to_string((1, 1), '(F6.2)'), "( 1.00, 1.00)", &
& "Formatter for complex number")
if (allocated(error)) return
call check_formatter(error, to_string((-1, -1), 'F6.2'), "( -1.00, -1.00)", &
& "Formatter for negative complex number")
if (allocated(error)) return
call check_formatter(error, to_string((1, 1), 'SP,F6.2'), "( +1.00, +1.00)", &
& "Formatter with sign control descriptor for complex number")
if (allocated(error)) return
call check_formatter(error, to_string((1, 1), 'F6.2') // to_string((2, 2), '(F7.3)'), &
& "( 1.00, 1.00)( 2.000, 2.000)", &
& "Multiple formatters for complex numbers")
end subroutine test_to_string_complex
subroutine test_to_string_integer(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check_formatter(error, to_string(100), "100", &
& "Default formatter for integer number")
if (allocated(error)) return
call check_formatter(error, to_string(100, 'I6'), " 100", &
& "Formatter for integer number")
if (allocated(error)) return
call check_formatter(error, to_string(100, 'I0.6'), "000100", &
& "Formatter with zero padding for integer number")
if (allocated(error)) return
call check_formatter(error, to_string(100, 'I6') // to_string(1000, '(I7)'), &
& " 100 1000", "Multiple formatters for integers")
if (allocated(error)) return
call check_formatter(error, to_string(34, 'B8'), " 100010", &
& "Binary formatter for integer number")
if (allocated(error)) return
call check_formatter(error, to_string(34, 'O0.3'), "042", &
& "Octal formatter with zero padding for integer number")
if (allocated(error)) return
call check_formatter(error, to_string(34, 'Z3'), " 22", &
& "Hexadecimal formatter for integer number")
end subroutine test_to_string_integer
subroutine test_to_string_real(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check_formatter(error, to_string(100.), "100.0", &
& "Default formatter for real number", partial=.true.)
if (allocated(error)) return
call check_formatter(error, to_string(100., 'F6.2'), "100.00", &
& "Formatter for real number")
if (allocated(error)) return
call check_formatter(error, to_string(289., 'E7.2'), ".29E+03", &
& "Exponential formatter with rounding for real number")
if (allocated(error)) return
call check_formatter(error, to_string(128., 'ES8.2'), "1.28E+02", &
& "Exponential formatter for real number")
if (allocated(error)) return
! Wrong demonstration
call check_formatter(error, to_string(-100., 'F6.2'), "*", &
& "Too narrow formatter for signed real number", partial=.true.)
if (allocated(error)) return
call check_formatter(error, to_string(1000., 'F6.3'), "*", &
& "Too narrow formatter for real number", partial=.true.)
if (allocated(error)) return
call check_formatter(error, to_string(1000., '7.3'), "[*]", &
& "Invalid formatter for real number", partial=.true.)
if (allocated(error)) return
end subroutine test_to_string_real
subroutine test_to_string_logical(error)
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check_formatter(error, to_string(.true.), "T", &
& "Default formatter for logcal value")
if (allocated(error)) return
call check_formatter(error, to_string(.true., 'L2'), " T", &
& "Formatter for logical value")
if (allocated(error)) return
call check_formatter(error, to_string(.false., 'L2') // to_string(.true., '(L5)'), &
& " F T", "Multiple formatters for logical values")
if (allocated(error)) return
! Wrong demonstration
call check_formatter(error, to_string(.false., '1x'), "[*]", &
& "Invalid formatter for logical value", partial=.true.)
end subroutine test_to_string_logical
subroutine test_string_i1(error)
use stdlib_kinds, only : i1 => int8
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check(error, to_string(-huge(1_i1) - 1_i1), "-128")
end subroutine test_string_i1
subroutine test_string_i2(error)
use stdlib_kinds, only : i2 => int16
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check(error, to_string(-huge(1_i2) - 1_i2), "-32768")
end subroutine test_string_i2
subroutine test_string_i4(error)
use stdlib_kinds, only : i4 => int32
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check(error, to_string(-huge(1_i4) - 1_i4), "-2147483648")
end subroutine test_string_i4
subroutine test_string_i8(error)
use stdlib_kinds, only : i8 => int64
!> Error handling
type(error_type), allocatable, intent(out) :: error
call check(error, to_string(-huge(1_i8) - 1_i8), "-9223372036854775808")
end subroutine test_string_i8
end module test_string_to_string
program tester
use, intrinsic :: iso_fortran_env, only : error_unit
use testdrive, only : run_testsuite, new_testsuite, testsuite_type
use test_string_to_string, only : collect_string_to_string
implicit none
integer :: stat, is
type(testsuite_type), allocatable :: testsuites(:)
character(len=*), parameter :: fmt = '("#", *(1x, a))'
stat = 0
testsuites = [ &
new_testsuite("string-to_string", collect_string_to_string) &
]
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