1 | !> @file tests/util.f90 |
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2 | !------------------------------------------------------------------------------! |
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3 | ! This file is part of PALM/PALM-4U. |
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4 | ! |
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5 | ! PALM/PALM-4U is free software: you can redistribute it and/or modify it under |
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6 | ! the terms of the GNU General Public License as published by the Free Software |
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7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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8 | ! version. |
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9 | ! |
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10 | ! PALM/PALM-4U is distributed in the hope that it will be useful, but WITHOUT |
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11 | ! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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12 | ! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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13 | ! |
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14 | ! You should have received a copy of the GNU General Public License along with |
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15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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16 | ! |
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17 | ! Copyright 2017-2017 Leibniz Universitaet Hannover, Deutscher Wetterdienst |
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18 | ! Offenbach |
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19 | !------------------------------------------------------------------------------! |
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20 | ! |
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21 | ! Current revisions: |
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22 | ! ----------------- |
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23 | ! |
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24 | ! |
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25 | ! Former revisions: |
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26 | ! ----------------- |
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27 | ! $Id: util.f90 2696 2017-12-14 17:12:51Z knoop $ |
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28 | ! Initial revision |
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29 | ! |
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30 | ! |
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31 | ! |
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32 | ! Authors: |
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33 | ! -------- |
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34 | ! @author Eckhard Kadasch |
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35 | ! |
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36 | ! Description: |
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37 | ! ------------ |
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38 | !> This module provides utiliy functions used in all test programs. |
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39 | !------------------------------------------------------------------------------! |
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40 | MODULE test_utils |
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41 | |
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42 | IMPLICIT NONE |
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43 | |
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44 | CONTAINS |
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45 | |
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46 | SUBROUTINE begin_test(title, res) |
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47 | CHARACTER(LEN=*), INTENT(IN) :: title |
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48 | LOGICAL, INTENT(OUT) :: res |
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49 | |
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50 | res = .TRUE. |
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51 | |
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52 | PRINT '(/A)', "******************************************************" |
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53 | PRINT '(A, A, A)', " [ ] Test '", TRIM(title), "' started." |
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54 | PRINT '(A/)', "******************************************************" |
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55 | END SUBROUTINE begin_test |
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56 | |
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57 | SUBROUTINE end_test(title, res) |
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58 | CHARACTER(LEN=*), INTENT(IN) :: title |
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59 | CHARACTER(LEN=30) :: msg, label |
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60 | LOGICAL, INTENT(IN) :: res |
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61 | |
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62 | |
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63 | IF (res .EQV. .TRUE.) THEN |
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64 | msg = 'completed successfully.' |
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65 | label = ' [OK]' |
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66 | ELSE |
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67 | msg = 'failed.' |
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68 | label = ' [XX]' |
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69 | END IF |
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70 | |
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71 | PRINT '(/A, A, A, A)', TRIM(label) // " Test '", TRIM(title), "' ", TRIM(msg) |
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72 | PRINT '(A/)', "******************************************************" |
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73 | |
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74 | END SUBROUTINE end_test |
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75 | |
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76 | LOGICAL FUNCTION assert_equal(a, b, msg) |
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77 | REAL, DIMENSION(:), INTENT(IN) :: a, b |
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78 | CHARACTER(LEN=*), INTENT(IN) :: msg |
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79 | |
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80 | assert_equal = assert(a, b, 'eq') |
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81 | IF (assert_equal .eqv. .TRUE.) THEN |
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82 | PRINT *, "Equality assertion for ", msg, " was successful." |
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83 | ELSE |
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84 | PRINT *, "Equality assertion for ", msg, " failed. Maximum error is ", & |
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85 | MAXVAL( ABS( a - b)) |
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86 | END IF |
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87 | |
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88 | END FUNCTION assert_equal |
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89 | |
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90 | LOGICAL FUNCTION assert(a, b, mode, eps) |
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91 | |
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92 | REAL, DIMENSION(:), INTENT(IN) :: a, b |
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93 | REAL, OPTIONAL, INTENT(IN) :: eps |
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94 | CHARACTER(LEN=*), INTENT(IN) :: mode |
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95 | |
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96 | REAL :: diff, mag, max_rel_diff |
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97 | INTEGER :: i |
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98 | |
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99 | max_rel_diff = 10 * EPSILON(1.0) |
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100 | IF (PRESENT(eps)) max_rel_diff = eps |
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101 | |
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102 | SELECT CASE( TRIM(mode) ) |
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103 | |
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104 | ! This case is inspired by |
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105 | ! https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/ |
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106 | CASE('eq') |
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107 | IF ( ALL(a(:) == b(:)) ) THEN |
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108 | PRINT *, "Checking for exact equality" |
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109 | assert = .TRUE. |
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110 | ELSE |
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111 | assert = .TRUE. |
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112 | PRINT *, "Checking for near equality" |
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113 | DO i = 1, SIZE(a) |
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114 | diff = ABS(a(i) - b(i)) |
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115 | mag = MAX( ABS(a(i)), ABS(b(i)) ) |
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116 | assert = assert .AND. (diff < mag * max_rel_diff ) |
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117 | END DO |
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118 | END IF |
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119 | |
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120 | CASE DEFAULT |
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121 | PRINT *, " Error: Assert mode ", mode, " not implemented. Stopping." |
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122 | STOP |
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123 | |
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124 | END SELECT |
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125 | |
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126 | END FUNCTION assert |
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127 | |
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128 | END MODULE test_utils |
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129 | |
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