| 1 | /* GLib testing framework examples and tests |
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| 2 | * |
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| 3 | * Copyright © 2018 Endless Mobile, Inc. |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU Lesser General Public |
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| 7 | * License as published by the Free Software Foundation; either |
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| 8 | * version 2.1 of the License, or (at your option) any later version. |
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| 9 | * |
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| 10 | * This library is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Lesser General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Lesser General |
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| 16 | * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. |
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| 17 | * |
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| 18 | * Author: Philip Withnall <withnall@endlessm.com> |
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| 19 | */ |
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| 20 | |
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| 21 | #include <glib.h> |
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| 22 | |
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| 23 | /* Test that G_STATIC_ASSERT_EXPR can be used as an expression */ |
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| 24 | static void |
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| 25 | test_assert_static (void) |
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| 26 | { |
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| 27 | G_STATIC_ASSERT (4 == 4); |
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| 28 | if (G_STATIC_ASSERT_EXPR (1 == 1), sizeof (gchar) == 2) |
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| 29 | g_assert_not_reached (); |
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| 30 | } |
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| 31 | |
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| 32 | /* Test G_ALIGNOF() gives the same results as the G_STRUCT_OFFSET fallback. This |
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| 33 | * should be the minimal alignment for the given type. |
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| 34 | * |
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| 35 | * This is necessary because the implementation of G_ALIGNOF() varies depending |
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| 36 | * on the compiler in use. We want all implementations to be consistent. |
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| 37 | * |
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| 38 | * In the case that the compiler uses the G_STRUCT_OFFSET fallback, this test |
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| 39 | * is a no-op. */ |
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| 40 | static void |
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| 41 | test_alignof_fallback (void) |
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| 42 | { |
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| 43 | #define check_alignof(type) \ |
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| 44 | g_assert_cmpint (G_ALIGNOF (type), ==, G_STRUCT_OFFSET (struct { char a; type b; }, b)) |
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| 45 | |
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| 46 | check_alignof (char); |
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| 47 | check_alignof (int); |
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| 48 | check_alignof (float); |
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| 49 | check_alignof (double); |
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| 50 | check_alignof (struct { char a; int b; }); |
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| 51 | } |
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| 52 | |
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| 53 | static void |
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| 54 | test_struct_sizeof_member (void) |
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| 55 | { |
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| 56 | G_STATIC_ASSERT (G_SIZEOF_MEMBER (struct { char a; int b; }, a) == sizeof (char)); |
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| 57 | g_assert_cmpint (G_SIZEOF_MEMBER (struct { char a; int b; }, b), ==, sizeof (int)); |
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| 58 | } |
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| 59 | |
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| 60 | int |
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| 61 | main (int argc, |
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| 62 | char *argv[]) |
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| 63 | { |
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| 64 | g_test_init (argc: &argc, argv: &argv, NULL); |
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| 65 | |
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| 66 | g_test_add_func (testpath: "/alignof/fallback" , test_func: test_alignof_fallback); |
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| 67 | g_test_add_func (testpath: "/assert/static" , test_func: test_assert_static); |
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| 68 | g_test_add_func (testpath: "/struct/sizeof_member" , test_func: test_struct_sizeof_member); |
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| 69 | |
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| 70 | return g_test_run (); |
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| 71 | } |
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| 72 | |
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