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gsk: Add some more transform tests

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Tests around identity. Seems trivial, but
still managed to find a bug.
This commit is contained in:
Matthias Clasen 2019-06-03 16:18:55 +00:00
parent 4ed57449ba
commit 2f7047147d
1 changed files with 54 additions and 0 deletions
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54
testsuite/gsk/transform.c
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@ -279,6 +279,59 @@ test_invert (void)
}
}
/* some trivialities around identity transforms */
static void
test_identity (void)
{
GskTransform *s, *t, *u, *v, *w, *x;
char *string;
float a, b, c, d, tx, ty;
gboolean res;
s = gsk_transform_new ();
t = gsk_transform_new ();
u = gsk_transform_transform (gsk_transform_ref (s), NULL);
g_assert_cmpint (gsk_transform_get_category (s), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
g_assert_cmpint (gsk_transform_get_category (t), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
g_assert_cmpint (gsk_transform_get_category (u), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
g_assert_true (gsk_transform_equal (s, t));
g_assert_true (gsk_transform_equal (t, u));
g_assert_true (gsk_transform_equal (s, u));
v = gsk_transform_transform (gsk_transform_ref (s), t);
g_assert_cmpint (gsk_transform_get_category (v), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
w = gsk_transform_invert (gsk_transform_ref (v));
g_assert_cmpint (gsk_transform_get_category (w), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
string = gsk_transform_to_string (s);
res = gsk_transform_parse (string, &x);
g_assert_true (res);
g_assert_cmpint (gsk_transform_get_category (x), ==, GSK_TRANSFORM_CATEGORY_IDENTITY);
gsk_transform_to_2d (s, &a, &b, &c, &d, &tx, &ty);
g_assert_cmpfloat (a, ==, 1.0f);
g_assert_cmpfloat (b, ==, 0.0f);
g_assert_cmpfloat (c, ==, 0.0f);
g_assert_cmpfloat (d, ==, 1.0f);
g_assert_cmpfloat (tx, ==, 0.0f);
g_assert_cmpfloat (ty, ==, 0.f);
gsk_transform_unref (s);
gsk_transform_unref (t);
gsk_transform_unref (u);
gsk_transform_unref (v);
gsk_transform_unref (w);
gsk_transform_unref (x);
g_free (string);
}
int
main (int argc,
char *argv[])
@ -288,6 +341,7 @@ main (int argc,
g_test_add_func ("/transform/conversions/simple", test_conversions_simple);
g_test_add_func ("/transform/conversions/transformed", test_conversions_transformed);
g_test_add_func ("/transform/invert", test_invert);
g_test_add_func ("/transform/identity", test_identity);
return g_test_run ();
}