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testboxes: Fix find_closest_point_to_line() test

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Eeeks, testing floating points for equality ...
This commit is contained in:
Florian Müllner 2014-06-12 01:34:40 +02:00
parent 8100cefd4c
commit 0fccb0fc86
1 changed files with 6 additions and 4 deletions
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10
src/core/testboxes.c
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@ -25,6 +25,7 @@
#include <stdio.h> #include <stdio.h>
#include <X11/Xutil.h> /* Just for the definition of the various gravities */ #include <X11/Xutil.h> /* Just for the definition of the various gravities */
#include <time.h> /* To initialize random seed */ #include <time.h> /* To initialize random seed */
#include <math.h>
#define NUM_RANDOM_RUNS 10000 #define NUM_RANDOM_RUNS 10000
@ -1332,6 +1333,7 @@ test_gravity_resize ()
printf ("%s passed.\n", G_STRFUNC); printf ("%s passed.\n", G_STRFUNC);
} }
#define EPSILON 0.000000001
static void static void
test_find_closest_point_to_line () test_find_closest_point_to_line ()
{ {
@ -1346,7 +1348,7 @@ test_find_closest_point_to_line ()
x2, y2, x2, y2,
px, py, px, py,
&rx, &ry); &rx, &ry);
g_assert (rx == answer_x && ry == answer_y); g_assert (fabs (rx - answer_x) < EPSILON && fabs (ry - answer_y) < EPSILON);
/* Special test for x1 == x2, so that slop of line is infinite */ /* Special test for x1 == x2, so that slop of line is infinite */
x1 = 3.0; y1 = 49.0; x1 = 3.0; y1 = 49.0;
@ -1357,7 +1359,7 @@ test_find_closest_point_to_line ()
x2, y2, x2, y2,
px, py, px, py,
&rx, &ry); &rx, &ry);
g_assert (rx == answer_x && ry == answer_y); g_assert (fabs (rx - answer_x) < EPSILON && fabs (ry - answer_y) < EPSILON);
/* Special test for y1 == y2, so perp line has slope of infinity */ /* Special test for y1 == y2, so perp line has slope of infinity */
x1 = 3.14; y1 = 7.0; x1 = 3.14; y1 = 7.0;
@ -1368,7 +1370,7 @@ test_find_closest_point_to_line ()
x2, y2, x2, y2,
px, py, px, py,
&rx, &ry); &rx, &ry);
g_assert (rx == answer_x && ry == answer_y); g_assert (fabs (rx - answer_x) < EPSILON && fabs (ry - answer_y) < EPSILON);
/* Test when we the point we want to be closest to is actually on the line */ /* Test when we the point we want to be closest to is actually on the line */
x1 = 3.0; y1 = 49.0; x1 = 3.0; y1 = 49.0;
@ -1379,7 +1381,7 @@ test_find_closest_point_to_line ()
x2, y2, x2, y2,
px, py, px, py,
&rx, &ry); &rx, &ry);
g_assert (rx == answer_x && ry == answer_y); g_assert (fabs (rx - answer_x) < EPSILON && fabs (ry - answer_y) < EPSILON);
printf ("%s passed.\n", G_STRFUNC); printf ("%s passed.\n", G_STRFUNC);
} }