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c96985f1db
* sort: add is_sorted Add is_sorted function to check whether a list is sorted or not. Sort order (ascending or descending) will be detected by looking at the data. Add tests. * update the release notes * refactor: use lambda
93 lines
1.6 KiB
Plaintext
93 lines
1.6 KiB
Plaintext
module sort_test @test;
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import std::sort;
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import std::collections::list;
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struct TestCase @local
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{
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int[] input;
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bool want;
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}
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fn void sorted()
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{
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TestCase[] tcases = {
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{
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.input = {},
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.want = true,
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},
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{
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.input = {1},
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.want = true,
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},
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{
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.input = {1,2},
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.want = true,
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},
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{
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.input = {2,1},
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.want = true,
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},
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{
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.input = {1,2,3},
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.want = true,
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},
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{
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.input = {1,2,1},
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.want = false,
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},
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{
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.input = {2,1,2},
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.want = false,
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},
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{
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.input = {3,2,1},
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.want = true,
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},
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{
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.input = {1,1,1,1,1,2},
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.want = true,
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},
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{
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.input = {2,2,2,2,2,1},
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.want = true,
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},
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{
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.input = {1,1,1,1,2,1},
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.want = false,
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},
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};
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bool got;
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foreach (tc : tcases)
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{
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// default
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got = is_sorted(tc.input);
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assert(got == tc.want, "default: %s, got: %s, want: %s",
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tc.input, got, tc.want);
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// with list
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List(<int>) list;
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list.temp_init();
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list.add_array(tc.input);
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got = is_sorted(list);
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assert(got == tc.want, "list: %s, got: %s, want: %s",
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list.to_tstring(), got, tc.want);
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// with lambda
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got = is_sorted(tc.input, fn int(int a, int b) => a - b);
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assert(got == tc.want, "lambda: %s, got: %s, want: %s",
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tc.input, got, tc.want);
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// with value
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got = is_sorted(tc.input, &sort::cmp_int_value);
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assert(got == tc.want, "value: %s, got: %s, want: %s",
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tc.input, got, tc.want);
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// with ref
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got = is_sorted(tc.input, &sort::cmp_int_ref);
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assert(got == tc.want, "ref: %s, got: %s, want: %s",
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tc.input, got, tc.want);
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}
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}
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