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When consuming a priority queue, it can be convenient to inspect the next object that will be dequeued without actually dequeueing it. Our existing library did not have such a 'peek' operation, so add it as prio_queue_peek(). Add a reference-level comparison in t/helper/test-prio-queue.c so this method is exercised by t0009-prio-queue.sh. Further, add a test that checks the behavior when the compare function is NULL (i.e. the queue becomes a stack). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
65 lines
780 B
Bash
Executable File
65 lines
780 B
Bash
Executable File
#!/bin/sh
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test_description='basic tests for priority queue implementation'
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. ./test-lib.sh
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cat >expect <<'EOF'
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1
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2
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3
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4
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5
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5
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6
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7
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8
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9
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10
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EOF
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test_expect_success 'basic ordering' '
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test-tool prio-queue 2 6 3 10 9 5 7 4 5 8 1 dump >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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2
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3
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4
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1
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5
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6
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EOF
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test_expect_success 'mixed put and get' '
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test-tool prio-queue 6 2 4 get 5 3 get get 1 dump >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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1
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2
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NULL
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1
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2
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NULL
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EOF
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test_expect_success 'notice empty queue' '
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test-tool prio-queue 1 2 get get get 1 2 get get get >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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3
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2
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6
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4
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5
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1
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8
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EOF
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test_expect_success 'stack order' '
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test-tool prio-queue stack 8 1 5 4 6 2 3 dump >actual &&
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test_cmp expect actual
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'
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test_done
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