[metacity] testboxes: fix test_find_closest_point_to_line test

[Alberts Muktupāvels <muktupavels src gnome org>]

commit a9ab7a62e23f8ec6bb1b1ee2da754dddd3f9fefc
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Mar 16 14:31:20 2021 +0200

    testboxes: fix test_find_closest_point_to_line test
    
    Use g_assert_cmpfloat_with_epsilon to compare floating points.

 src/core/testboxes.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)
---
diff --git a/src/core/testboxes.c b/src/core/testboxes.c
index e59db39b3..d72e7a752 100644
--- a/src/core/testboxes.c
+++ b/src/core/testboxes.c
@@ -1361,7 +1361,9 @@ test_find_closest_point_to_line (void)
                                                   x2,  y2,
                                                   px,  py,
                                                   &rx, &ry);
-  g_assert (rx == answer_x && ry == answer_y);
+
+  g_assert_cmpfloat_with_epsilon (rx, answer_x, 0.0001);
+  g_assert_cmpfloat_with_epsilon (ry, answer_y, 0.0001);
 
   /* Special test for x1 == x2, so that slop of line is infinite */
   x1 =  3.0;  y1 =  49.0;
@@ -1372,7 +1374,9 @@ test_find_closest_point_to_line (void)
                                                   x2,  y2,
                                                   px,  py,
                                                   &rx, &ry);
-  g_assert (rx == answer_x && ry == answer_y);
+
+  g_assert_cmpfloat_with_epsilon (rx, answer_x, 0.0001);
+  g_assert_cmpfloat_with_epsilon (ry, answer_y, 0.0001);
 
   /* Special test for y1 == y2, so perp line has slope of infinity */
   x1 =  3.14;  y1 =   7.0;
@@ -1383,7 +1387,9 @@ test_find_closest_point_to_line (void)
                                                   x2,  y2,
                                                   px,  py,
                                                   &rx, &ry);
-  g_assert (rx == answer_x && ry == answer_y);
+
+  g_assert_cmpfloat_with_epsilon (rx, answer_x, 0.0001);
+  g_assert_cmpfloat_with_epsilon (ry, answer_y, 0.0001);
 
   /* Test when we the point we want to be closest to is actually on the line */
   x1 =  3.0;  y1 =  49.0;
@@ -1394,7 +1400,9 @@ test_find_closest_point_to_line (void)
                                                   x2,  y2,
                                                   px,  py,
                                                   &rx, &ry);
-  g_assert (rx == answer_x && ry == answer_y);
+
+  g_assert_cmpfloat_with_epsilon (rx, answer_x, 0.0001);
+  g_assert_cmpfloat_with_epsilon (ry, answer_y, 0.0001);
 
   printf ("%s passed.\n", G_STRFUNC);
 }