65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
import sys
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import pytest
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from io import StringIO
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from nordhealth_test.solution import print_pairs_with_same_sum
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def capture_output(func, *args, **kwargs):
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captured_output = StringIO()
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sys.stdout = captured_output
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func(*args, **kwargs)
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sys.stdout = sys.__stdout__
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return captured_output.getvalue()
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# Test case Input 1: [6, 4, 12, 10, 22, 54, 32, 42, 21, 11]
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def test_input_1():
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arr = [6, 4, 12, 10, 22, 54, 32, 42, 21, 11]
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expected_output = (
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"Pairs : ( 4, 12) ( 6, 10) have sum : 16\n"
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"Pairs : ( 10, 22) ( 21, 11) have sum : 32\n"
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"Pairs : ( 12, 21) ( 22, 11) have sum : 33\n"
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"Pairs : ( 22, 21) ( 32, 11) have sum : 43\n"
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"Pairs : ( 32, 21) ( 42, 11) have sum : 53\n"
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"Pairs : ( 12, 42) ( 22, 32) have sum : 54\n"
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"Pairs : ( 10, 54) ( 22, 42) have sum : 64\n"
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)
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result = capture_output(print_pairs_with_same_sum, arr)
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assert result == expected_output
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# Test case Input 2: [4, 23, 65, 67, 24, 12, 86]
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def test_input_2():
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arr = [4, 23, 65, 67, 24, 12, 86]
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expected_output = (
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"Pairs : ( 4, 86) ( 23, 67) have sum : 90\n"
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)
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result = capture_output(print_pairs_with_same_sum, arr)
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assert result == expected_output
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# Test case: Array with no valid pairs
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def test_no_valid_pairs():
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arr = [1, 2, 3, 5]
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expected_output = ""
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result = capture_output(print_pairs_with_same_sum, arr)
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assert result == expected_output
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# Test case: Array with no unique pairs
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def test_no_uniqe_pairs():
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arr = [2, 3, 3, 2]
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expected_output = ""
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result = capture_output(print_pairs_with_same_sum, arr)
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assert result == expected_output
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# Test case: Array with exactly one element
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def test_single_element():
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arr = [10]
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expected_output = "No pairs can be formed from the input file."
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with pytest.raises(ValueError) as val_error:
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capture_output(print_pairs_with_same_sum, arr)
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assert str(val_error.value) == expected_output
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# Test case: Empty array
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def test_empty_array():
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arr = []
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expected_output = "No pairs can be formed from the input file."
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with pytest.raises(ValueError) as val_error:
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capture_output(print_pairs_with_same_sum, arr)
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assert str(val_error.value) == expected_output |