| 1 | ! Test program for string pool validation |
| 2 | program test_memory_pool |
| 3 | use string_pool |
| 4 | use iso_fortran_env, only: int64 |
| 5 | implicit none |
| 6 | |
| 7 | integer :: i, j |
| 8 | logical :: all_tests_passed |
| 9 | type(string_ref) :: ref1, ref2, refs(100) |
| 10 | character(len=100) :: test_string |
| 11 | integer :: allocs, deallocs, current, peak |
| 12 | real :: hit_rate |
| 13 | integer(int64) :: start_time, end_time, clock_rate |
| 14 | |
| 15 | all_tests_passed = .true. |
| 16 | |
| 17 | print *, "=== String Pool Test Suite ===" |
| 18 | print *, "" |
| 19 | |
| 20 | ! Test 1: Basic allocation and deallocation |
| 21 | print *, "Test 1: Basic allocation..." |
| 22 | call pool_init() |
| 23 | ref1 = pool_get_string(100) |
| 24 | |
| 25 | if (.not. associated(ref1%data)) then |
| 26 | print *, " FAILED: String not allocated" |
| 27 | all_tests_passed = .false. |
| 28 | else |
| 29 | ref1%data = "Hello, World!" |
| 30 | if (ref1%data /= "Hello, World!") then |
| 31 | print *, " FAILED: String content mismatch" |
| 32 | all_tests_passed = .false. |
| 33 | else |
| 34 | print *, " PASSED: Basic allocation works" |
| 35 | end if |
| 36 | end if |
| 37 | |
| 38 | call pool_release_string(ref1) |
| 39 | |
| 40 | ! Test 2: Pool reuse |
| 41 | print *, "Test 2: Pool reuse..." |
| 42 | ref1 = pool_get_string(50) |
| 43 | ref1%data = "First" |
| 44 | call pool_release_string(ref1) |
| 45 | |
| 46 | ref2 = pool_get_string(50) |
| 47 | ! Should reuse the same slot |
| 48 | call pool_statistics(allocs, deallocs, current, peak, hit_rate) |
| 49 | if (hit_rate < 0.5) then |
| 50 | print *, " WARNING: Low hit rate, pool may not be reusing" |
| 51 | end if |
| 52 | print *, " PASSED: Pool reuse (hit rate:", hit_rate, ")" |
| 53 | call pool_release_string(ref2) |
| 54 | |
| 55 | ! Test 3: Multiple size classes |
| 56 | print *, "Test 3: Size class buckets..." |
| 57 | ref1 = pool_get_string(10) ! Should go to 64B bucket |
| 58 | ref2 = pool_get_string(100) ! Should go to 256B bucket |
| 59 | |
| 60 | ref1%data = "Small" |
| 61 | ref2%data = "Medium string that is longer" |
| 62 | |
| 63 | if (ref1%data /= "Small" .or. len_trim(ref2%data) /= 28) then |
| 64 | print *, " FAILED: Size class allocation failed" |
| 65 | all_tests_passed = .false. |
| 66 | else |
| 67 | print *, " PASSED: Multiple size classes work" |
| 68 | end if |
| 69 | |
| 70 | call pool_release_string(ref1) |
| 71 | call pool_release_string(ref2) |
| 72 | |
| 73 | ! Test 4: String interning |
| 74 | print *, "Test 4: String interning..." |
| 75 | ref1 = pool_intern_string("common_string") |
| 76 | ref2 = pool_intern_string("common_string") |
| 77 | |
| 78 | if (ref1%ref_count /= ref2%ref_count) then |
| 79 | print *, " WARNING: Interning may not be working correctly" |
| 80 | else |
| 81 | print *, " PASSED: String interning works" |
| 82 | end if |
| 83 | |
| 84 | call pool_release_string(ref1) |
| 85 | call pool_release_string(ref2) |
| 86 | |
| 87 | ! Test 5: Stress test - rapid allocation/deallocation |
| 88 | print *, "Test 5: Stress test (1000 allocations)..." |
| 89 | call system_clock(start_time, clock_rate) |
| 90 | |
| 91 | do i = 1, 10 |
| 92 | do j = 1, 100 |
| 93 | refs(j) = pool_get_string(64) |
| 94 | write(test_string, '(a,i0)') "Test string number ", i*100+j |
| 95 | refs(j)%data = trim(test_string) |
| 96 | end do |
| 97 | |
| 98 | do j = 1, 100 |
| 99 | call pool_release_string(refs(j)) |
| 100 | end do |
| 101 | end do |
| 102 | |
| 103 | call system_clock(end_time) |
| 104 | print *, " PASSED: Stress test completed in", & |
| 105 | real(end_time - start_time) / real(clock_rate), "seconds" |
| 106 | |
| 107 | ! Test 6: Large allocation (beyond pool) |
| 108 | print *, "Test 6: Large allocation fallback..." |
| 109 | ref1 = pool_get_string(100000) ! 100KB - should bypass pool |
| 110 | |
| 111 | if (.not. associated(ref1%data)) then |
| 112 | print *, " FAILED: Large allocation failed" |
| 113 | all_tests_passed = .false. |
| 114 | else |
| 115 | ref1%data(1:5) = "Large" |
| 116 | if (ref1%data(1:5) /= "Large") then |
| 117 | print *, " FAILED: Large allocation content error" |
| 118 | all_tests_passed = .false. |
| 119 | else |
| 120 | print *, " PASSED: Large allocation fallback works" |
| 121 | end if |
| 122 | end if |
| 123 | |
| 124 | call pool_release_string(ref1) |
| 125 | |
| 126 | ! Test 7: Statistics |
| 127 | print *, "" |
| 128 | print *, "Pool Statistics:" |
| 129 | call pool_statistics(allocs, deallocs, current, peak, hit_rate) |
| 130 | print *, " Total allocations:", allocs |
| 131 | print *, " Total deallocations:", deallocs |
| 132 | print *, " Current strings:", current |
| 133 | print *, " Peak strings:", peak |
| 134 | print *, " Cache hit rate:", hit_rate |
| 135 | |
| 136 | ! Cleanup |
| 137 | call pool_cleanup() |
| 138 | |
| 139 | ! Test 8: Verify cleanup |
| 140 | print *, "" |
| 141 | print *, "Test 8: Cleanup verification..." |
| 142 | call pool_statistics(allocs, deallocs, current, peak, hit_rate) |
| 143 | if (current /= 0) then |
| 144 | print *, " FAILED: Memory leak detected after cleanup" |
| 145 | all_tests_passed = .false. |
| 146 | else |
| 147 | print *, " PASSED: Clean shutdown" |
| 148 | end if |
| 149 | |
| 150 | ! Final result |
| 151 | print *, "" |
| 152 | print *, "===============================" |
| 153 | if (all_tests_passed) then |
| 154 | print *, "ALL TESTS PASSED!" |
| 155 | stop 0 |
| 156 | else |
| 157 | print *, "SOME TESTS FAILED!" |
| 158 | stop 1 |
| 159 | end if |
| 160 | |
| 161 | end program test_memory_pool |