lib/test_bitmap.c: add test for bitmap_cut() (bcb32a1d) · Commits · 戴 / test

lib/test_bitmap.c

+58 −0

Original line number	Diff line number	Diff line
		@@ -610,6 +610,63 @@ static void __init test_for_each_set_clump8(void)
		expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump);
		}

		struct test_bitmap_cut {
		unsigned int first;
		unsigned int cut;
		unsigned int nbits;
		unsigned long in[4];
		unsigned long expected[4];
		};

		static struct test_bitmap_cut test_cut[] = {
		{ 0, 0, 8, { 0x0000000aUL, }, { 0x0000000aUL, }, },
		{ 0, 0, 32, { 0xdadadeadUL, }, { 0xdadadeadUL, }, },
		{ 0, 3, 8, { 0x000000aaUL, }, { 0x00000015UL, }, },
		{ 3, 3, 8, { 0x000000aaUL, }, { 0x00000012UL, }, },
		{ 0, 1, 32, { 0xa5a5a5a5UL, }, { 0x52d2d2d2UL, }, },
		{ 0, 8, 32, { 0xdeadc0deUL, }, { 0x00deadc0UL, }, },
		{ 1, 1, 32, { 0x5a5a5a5aUL, }, { 0x2d2d2d2cUL, }, },
		{ 0, 15, 32, { 0xa5a5a5a5UL, }, { 0x00014b4bUL, }, },
		{ 0, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, },
		{ 15, 15, 32, { 0xa5a5a5a5UL, }, { 0x000125a5UL, }, },
		{ 15, 16, 32, { 0xa5a5a5a5UL, }, { 0x0000a5a5UL, }, },
		{ 16, 15, 32, { 0xa5a5a5a5UL, }, { 0x0001a5a5UL, }, },

		{ BITS_PER_LONG, BITS_PER_LONG, BITS_PER_LONG,
		{ 0xa5a5a5a5UL, 0xa5a5a5a5UL, },
		{ 0xa5a5a5a5UL, 0xa5a5a5a5UL, },
		},
		{ 1, BITS_PER_LONG - 1, BITS_PER_LONG,
		{ 0xa5a5a5a5UL, 0xa5a5a5a5UL, },
		{ 0x00000001UL, 0x00000001UL, },
		},

		{ 0, BITS_PER_LONG * 2, BITS_PER_LONG * 2 + 1,
		{ 0xa5a5a5a5UL, 0x00000001UL, 0x00000001UL, 0x00000001UL },
		{ 0x00000001UL, },
		},
		{ 16, BITS_PER_LONG * 2 + 1, BITS_PER_LONG * 2 + 1 + 16,
		{ 0x0000ffffUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL, 0x5a5a5a5aUL },
		{ 0x2d2dffffUL, },
		},
		};

		static void __init test_bitmap_cut(void)
		{
		unsigned long b[5], in = &b[1], out = &b[0]; /* Partial overlap */
		int i;

		for (i = 0; i < ARRAY_SIZE(test_cut); i++) {
		struct test_bitmap_cut *t = &test_cut[i];

		memcpy(in, t->in, sizeof(t->in));

		bitmap_cut(out, in, t->first, t->cut, t->nbits);

		expect_eq_bitmap(t->expected, out, t->nbits);
		}
		}

		static void __init selftest(void)
		{
		test_zero_clear();
		@@ -623,6 +680,7 @@ static void __init selftest(void)
		test_bitmap_parselist_user();
		test_mem_optimisations();
		test_for_each_set_clump8();
		test_bitmap_cut();
		}

		KSTM_MODULE_LOADERS(test_bitmap);

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