Merge pull request #30 from Ramy-Badr-Ahmed/tests/search_modules

Created tests for the existing `search` modules

tests/searches/linear_search.f90

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+!> Test program for the Linear Search algorithm
+!!
+!!  Created by: Ramy-Badr-Ahmed (https://github.com/Ramy-Badr-Ahmed)
+!!  in Pull Request: #30
+!!  https://github.com/TheAlgorithms/Fortran/pull/30
+!!
+!!  Please mention me (@Ramy-Badr-Ahmed) in any issue or pull request
+!!  addressing bugs/corrections to this file. Thank you!
+!!
+!!  This program provides additional test cases to validate the linear_search_module.
+
+program tests_linear_search
+    use linear_search_module
+    implicit none
+    integer, dimension(:), allocatable :: array
+    integer :: target, index, expected
+
+    ! Run test cases
+    call test_found()
+    call test_not_found()
+    call test_first_element()
+    call test_last_element()
+    call test_multiple_occurrences()
+    call test_single_element_found()
+    call test_single_element_not_found()
+    call test_empty_array()
+
+    print *, "All tests completed."
+
+contains
+
+    ! Test case 1: Target is found in the array
+    subroutine test_found()
+        array = (/30, 10, 20, 40, 55, 61, 72, 86, 97, 101/)
+        target = 97
+        expected = 9
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 1: Target found in the array")
+    end subroutine test_found
+
+    ! Test case 2: Target is not found in the array
+    subroutine test_not_found()
+        array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11/)
+        target = 66
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 2: Target not found in the array")
+    end subroutine test_not_found
+
+    ! Test case 3: Target is the first element
+    subroutine test_first_element()
+        array = (/10, 20, 30, 40, 50/)
+        target = array(1)
+        expected = 1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 3: Target is the first element")
+    end subroutine test_first_element
+
+    ! Test case 4: Target is the last element
+    subroutine test_last_element()
+        array = (/10, 20, 30, 40, 50, 60, 70, 80/)
+        target = array(size(array))
+        expected = size(array)
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 4: Target is the last element")
+    end subroutine test_last_element
+
+    ! Test case 5: Multiple occurrences of the target
+    subroutine test_multiple_occurrences()
+        array = (/1, 2, 3, 2, 4, 2, 5, 2, 4/)
+        target = 4
+        expected = 5
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 5: Target has multiple occurrences (first found)")
+    end subroutine test_multiple_occurrences
+
+    ! Test case 6: Single element found
+    subroutine test_single_element_found()
+        array = (/42/)
+        target = 42
+        expected = 1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 6: Single element found")
+    end subroutine test_single_element_found
+
+    ! Test case 7: Single element not found
+    subroutine test_single_element_not_found()
+        array = (/42/)
+        target = 99
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 7: Single element not found")
+    end subroutine test_single_element_not_found
+
+    ! Test case 8: Empty array
+    subroutine test_empty_array()
+        if (allocated(array)) deallocate (array)
+        allocate (array(0))         ! Empty array
+        target = 1
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 8: Search in an empty array")
+    end subroutine test_empty_array
+
+    !> Subroutine to assert the test results
+    subroutine assert_test(actual, expected, test_name)
+        integer, intent(in) :: actual, expected
+        character(len=*), intent(in) :: test_name
+
+        if (actual == expected) then
+            print *, test_name, " PASSED"
+        else
+            print *, test_name, " FAILED"
+            print *, "Expected: ", expected
+            print *, "Got: ", actual
+            stop 1
+        end if
+
+    end subroutine assert_test
+
+end program tests_linear_search

tests/searches/recursive_linear_search.f90

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+!> Test program for the Recursive Linear Search algorithm
+!!
+!!  Created by: Ramy-Badr-Ahmed (https://github.com/Ramy-Badr-Ahmed)
+!!  in Pull Request: #30
+!!  https://github.com/TheAlgorithms/Fortran/pull/30
+!!
+!!  Please mention me (@Ramy-Badr-Ahmed) in any issue or pull request
+!!  addressing bugs/corrections to this file. Thank you!
+!!
+!!  This program provides additional test cases to validate the recursive_linear_search_module.
+
+program tests_recursive_linear_search
+    use linear_search_module
+    implicit none
+    integer, dimension(:), allocatable :: array
+    integer :: target, index, expected
+
+    ! Run test cases
+    call test_found()
+    call test_not_found()
+    call test_first_element()
+    call test_last_element()
+    call test_multiple_occurrences()
+    call test_single_element_found()
+    call test_single_element_not_found()
+    call test_empty_array()
+
+    print *, "All tests completed."
+
+contains
+
+    ! Test case 1: Target is found in the array
+    subroutine test_found()
+        array = (/30, 10, 20, 40, 55, 61, 72, 86, 97, 101/)
+        target = 97
+        expected = 9
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 1: Target found in the array")
+    end subroutine test_found
+
+    ! Test case 2: Target is not found in the array
+    subroutine test_not_found()
+        array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11/)
+        target = 66
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 2: Target not found in the array")
+    end subroutine test_not_found
+
+    ! Test case 3: Target is the first element
+    subroutine test_first_element()
+        array = (/10, 20, 30, 40, 50/)
+        target = array(1)
+        expected = 1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 3: Target is the first element")
+    end subroutine test_first_element
+
+    ! Test case 4: Target is the last element
+    subroutine test_last_element()
+        array = (/10, 20, 30, 40, 50, 60, 70, 80/)
+        target = array(size(array))
+        expected = size(array)
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 4: Target is the last element")
+    end subroutine test_last_element
+
+    ! Test case 5: Multiple occurrences of the target
+    subroutine test_multiple_occurrences()
+        array = (/1, 2, 3, 2, 4, 2, 5, 2, 4/)
+        target = 4
+        expected = 5
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 5: Target has multiple occurrences (first found)")
+    end subroutine test_multiple_occurrences
+
+    ! Test case 6: Single element found
+    subroutine test_single_element_found()
+        array = (/42/)
+        target = 42
+        expected = 1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 6: Single element found")
+    end subroutine test_single_element_found
+
+    ! Test case 7: Single element not found
+    subroutine test_single_element_not_found()
+        array = (/42/)
+        target = 99
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 7: Single element not found")
+    end subroutine test_single_element_not_found
+
+    ! Test case 8: Empty array
+    subroutine test_empty_array()
+        if (allocated(array)) deallocate (array)
+        allocate (array(0))         ! Empty array
+        target = 1
+        expected = -1
+        index = linear_search(array, target)
+        call assert_test(index, expected, "Test 8: Search in an empty array")
+    end subroutine test_empty_array
+
+    !> Subroutine to assert the test results
+    subroutine assert_test(actual, expected, test_name)
+        integer, intent(in) :: actual, expected
+        character(len=*), intent(in) :: test_name
+
+        if (actual == expected) then
+            print *, test_name, " PASSED"
+        else
+            print *, test_name, " FAILED"
+            print *, "Expected: ", expected
+            print *, "Got: ", actual
+            stop 1
+        end if
+
+    end subroutine assert_test
+
+end program tests_recursive_linear_search

tests/searches/ternary_search_array.f90

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+!> Test program for the Array-Based Ternary Search algorithm
+!!
+!!  Created by: Ramy-Badr-Ahmed (https://github.com/Ramy-Badr-Ahmed)
+!!  in Pull Request: #30
+!!  https://github.com/TheAlgorithms/Fortran/pull/30
+!!
+!!  Please mention me (@Ramy-Badr-Ahmed) in any issue or pull request
+!!  addressing bugs/corrections to this file. Thank you!
+!!
+!!  This program provides additional test cases to validate the array-based ternary_search module.
+
+program tests_ternary_search_array
+    use ternary_search
+    implicit none
+    integer, dimension(:), allocatable :: sorted_array
+    integer :: target, index, expected
+
+    ! Run test cases
+    call test_found()
+    call test_not_found()
+    call test_first_element()
+    call test_last_element()
+    call test_multiple_occurrences()
+    call test_single_element_found()
+    call test_single_element_not_found()
+    call test_empty_array()
+
+    print *, "All tests completed."
+
+contains
+
+    ! Test case 1: Target found
+    subroutine test_found()
+        sorted_array = (/1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25/)
+        target = 21
+        expected = 11
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 1: Target found in the array")
+    end subroutine test_found
+
+    ! Test case 2: Target not found
+    subroutine test_not_found()
+        sorted_array = (/1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12/)
+        target = 110
+        expected = -1
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, -1, "Test 2: Target not found in the array")
+    end subroutine test_not_found
+
+    ! Test case 3: Target is the first element
+    subroutine test_first_element()
+        sorted_array = (/10, 20, 30, 40, 50, 60, 70, 80/)
+        target = sorted_array(1)
+        expected = 1
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 3: Target is the first element")
+    end subroutine test_first_element
+
+    ! Test case 4: Target is the last element
+    subroutine test_last_element()
+        sorted_array = (/100, 200, 300, 400, 500, 600, 700, 800, 900/)
+        target = sorted_array(size(sorted_array))
+        expected = size(sorted_array)
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 4: Target is the last element")
+    end subroutine test_last_element
+
+    ! Test case 5: Multiple occurrences of the target
+    subroutine test_multiple_occurrences()
+        sorted_array = (/1, 1, 2, 3, 4, 4, 5, 5, 6, 7, 8, 8, 9, 10, 11, 12, 12/)
+        target = 12
+        expected = 16
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 5: Target has multiple occurrences (first found)")
+    end subroutine test_multiple_occurrences
+
+    ! Test case 6: Single element found
+    subroutine test_single_element_found()
+        sorted_array = (/59/)
+        target = 59
+        expected = 1
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 6: Single element found")
+    end subroutine test_single_element_found
+
+    ! Test case 7: Single element not found
+    subroutine test_single_element_not_found()
+        sorted_array = (/42/)
+        target = 99
+        expected = -1
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 7: Single element not found")
+    end subroutine test_single_element_not_found
+
+    ! Test case 8: Empty array
+    subroutine test_empty_array()
+        if (allocated(sorted_array)) deallocate (sorted_array)
+        allocate (sorted_array(0))         ! Empty array
+        target = 1
+        expected = -1
+        index = ternary_search_array(sorted_array, target, 1, size(sorted_array))
+        call assert_test(index, expected, "Test 8: Search in an empty array")
+    end subroutine test_empty_array
+
+    !> Subroutine to assert the test results
+    subroutine assert_test(actual, expected, test_name)
+        integer, intent(in) :: actual, expected
+        character(len=*), intent(in) :: test_name
+
+        if (actual == expected) then
+            print *, test_name, " PASSED"
+        else
+            print *, test_name, " FAILED"
+            print *, "Expected: ", expected
+            print *, "Got: ", actual
+            stop 1
+        end if
+
+    end subroutine assert_test
+
+end program tests_ternary_search_array