[gtk/path-work-rebased: 7/105] testsuite: Update create_random_path()
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/path-work-rebased: 7/105] testsuite: Update create_random_path()
- Date: Fri, 8 Apr 2022 17:20:39 +0000 (UTC)
commit 3dac5d22177b399011528417ba0127dbaa955e4a
Author: Benjamin Otte <otte redhat com>
Date: Fri Nov 27 04:46:19 2020 +0100
testsuite: Update create_random_path()
1. Allow specifying the max number of contours
2. Be smarter about creating the paths:
With 10% chance, create a "weird" path like the empty one or only
points or things like that.
Otherwise create a bunch of contours, with 2/3 a standard contour,
with 1/3 a predetermined one.
testsuite/gsk/path.c | 265 ++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 228 insertions(+), 37 deletions(-)
---
diff --git a/testsuite/gsk/path.c b/testsuite/gsk/path.c
index ceed9ca31f..c61e0da6ad 100644
--- a/testsuite/gsk/path.c
+++ b/testsuite/gsk/path.c
@@ -20,41 +20,213 @@
#include <gtk/gtk.h>
static GskPath *
-create_random_path (void)
+create_random_degenerate_path (guint max_contours)
{
+#define N_DEGENERATE_PATHS 14
GskPathBuilder *builder;
- guint i, n;
+ guint i;
builder = gsk_path_builder_new ();
- n = g_test_rand_int_range (0, 20);
- for (i = 0; i < n; i++)
- {
- switch (g_test_rand_int_range (0, 11))
- {
- case 0:
- gsk_path_builder_move_to (builder,
+ switch (g_test_rand_int_range (0, N_DEGENERATE_PATHS))
+ {
+ case 0:
+ /* empty path */
+ break;
+
+ case 1:
+ /* a single point */
+ gsk_path_builder_move_to (builder,
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
+ break;
+
+ case 2:
+ /* N points */
+ for (i = 0; i < MIN (10, max_contours); i++)
+ {
+ gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
- break;
-
- case 1:
+ }
+ break;
+
+ case 3:
+ /* 1 closed point */
+ gsk_path_builder_move_to (builder,
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
+ gsk_path_builder_close (builder);
+ break;
+
+ case 4:
+ /* the same point closed N times */
+ gsk_path_builder_move_to (builder,
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
+ for (i = 0; i < MIN (10, max_contours); i++)
+ {
gsk_path_builder_close (builder);
- break;
+ }
+ break;
+
+ case 5:
+ /* a zero-width and zero-height rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ 0, 0));
+ break;
+
+ case 6:
+ /* a zero-width rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ 0,
+ g_test_rand_double_range (-1000, 1000)));
+ break;
+
+ case 7:
+ /* a zero-height rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ 0));
+ break;
+
+ case 8:
+ /* a negative-size rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 0),
+ g_test_rand_double_range (-1000, 0)));
+ break;
+
+ case 9:
+ /* an absolutely random rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000)));
+ break;
+
+ case 10:
+ /* an absolutely random rect */
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000)));
+ break;
+
+ case 11:
+ /* an absolutely random circle */
+ gsk_path_builder_add_circle (builder,
+ &GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000)),
+ g_test_rand_double_range (1, 1000));
+ break;
+
+ case 12:
+ /* a zero-length line */
+ {
+ graphene_point_t point = GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
+ gsk_path_builder_move_to (builder, point.x, point.y);
+ gsk_path_builder_line_to (builder, point.x, point.y);
+ }
+ break;
+
+ case 13:
+ /* a curve with start == end */
+ {
+ graphene_point_t point = GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
+ gsk_path_builder_move_to (builder, point.x, point.y);
+ gsk_path_builder_curve_to (builder,
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ point.x, point.y);
+ }
+ break;
+
+ case N_DEGENERATE_PATHS:
+ default:
+ g_assert_not_reached ();
+ }
+
+ return gsk_path_builder_free_to_path (builder);
+}
+
+static GskPath *
+create_random_path (guint max_contours);
+
+static void
+add_shape_contour (GskPathBuilder *builder)
+{
+#define N_SHAPE_CONTOURS 3
+ switch (g_test_rand_int_range (0, N_SHAPE_CONTOURS))
+ {
+ case 0:
+ gsk_path_builder_add_rect (builder,
+ &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (1, 1000),
+ g_test_rand_double_range (1, 1000)));
+ break;
+
+ case 1:
+ gsk_path_builder_add_circle (builder,
+ &GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000)),
+ g_test_rand_double_range (1, 1000));
+ break;
+
+ case 2:
+ {
+ GskPath *path = create_random_path (1);
+ gsk_path_builder_add_path (builder, path);
+ gsk_path_unref (path);
+ }
+ break;
+
+ case N_SHAPE_CONTOURS:
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+static void
+add_standard_contour (GskPathBuilder *builder)
+{
+ guint i, n;
+
+ if (g_test_rand_bit ())
+ gsk_path_builder_move_to (builder,
+ g_test_rand_double_range (-1000, 1000),
+ g_test_rand_double_range (-1000, 1000));
- case 2:
- case 3:
- case 4:
- case 5:
+ /* that 20 is random, but should be enough to get some
+ * crazy self-intersecting shapes */
+ n = g_test_rand_int_range (1, 20);
+ for (i = 0; i < n; i++)
+ {
+ switch (g_test_rand_int_range (0, 2))
+ {
+ case 0:
gsk_path_builder_line_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
- case 6:
- case 7:
- case 8:
- case 9:
+ case 1:
gsk_path_builder_curve_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
@@ -64,20 +236,39 @@ create_random_path (void)
g_test_rand_double_range (-1000, 1000));
break;
- case 10:
- gsk_path_builder_add_rect (builder,
- &GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
- g_test_rand_double_range (-1000, 1000),
- g_test_rand_double_range (-1000, 1000),
- g_test_rand_double_range (-1000, 1000)));
- break;
-
default:
g_assert_not_reached();
break;
}
}
+ if (g_test_rand_bit ())
+ gsk_path_builder_close (builder);
+}
+
+static GskPath *
+create_random_path (guint max_contours)
+{
+ GskPathBuilder *builder;
+ guint i, n;
+
+ /* 5% chance for a weird shape */
+ if (g_test_rand_int_range (0, 20))
+ return create_random_degenerate_path (max_contours);
+
+ builder = gsk_path_builder_new ();
+ n = g_test_rand_int_range (1, 10);
+ n = MIN (n, max_contours);
+
+ for (i = 0; i < n; i++)
+ {
+ /* 2/3 of shapes are standard contours */
+ if (g_test_rand_int_range (0, 3))
+ add_standard_contour (builder);
+ else
+ add_shape_contour (builder);
+ }
+
return gsk_path_builder_free_to_path (builder);
}
@@ -93,9 +284,9 @@ test_create (void)
for (i = 0; i < 1000; i++)
{
builder = gsk_path_builder_new ();
- path1 = create_random_path ();
+ path1 = create_random_path (G_MAXUINT);
gsk_path_builder_add_path (builder, path1);
- path2 = create_random_path ();
+ path2 = create_random_path (G_MAXUINT);
gsk_path_builder_add_path (builder, path2);
built = gsk_path_builder_free_to_path (builder);
@@ -126,7 +317,7 @@ test_segment_start (void)
float epsilon, length;
guint i;
- path = create_random_path ();
+ path = create_random_path (G_MAXUINT);
measure = gsk_path_measure_new (path);
length = gsk_path_measure_get_length (measure);
epsilon = MAX (length / 1024, G_MINFLOAT);
@@ -159,7 +350,7 @@ test_segment_end (void)
float epsilon, length;
guint i;
- path = create_random_path ();
+ path = create_random_path (G_MAXUINT);
measure = gsk_path_measure_new (path);
length = gsk_path_measure_get_length (measure);
epsilon = MAX (length / 1024, G_MINFLOAT);
@@ -192,7 +383,7 @@ test_segment_chunk (void)
float epsilon, length;
guint i;
- path = create_random_path ();
+ path = create_random_path (G_MAXUINT);
measure = gsk_path_measure_new (path);
length = gsk_path_measure_get_length (measure);
epsilon = MAX (length / 1024, G_MINFLOAT);
@@ -227,7 +418,7 @@ test_segment (void)
for (i = 0; i < 1000; i++)
{
- path = create_random_path ();
+ path = create_random_path (G_MAXUINT);
measure = gsk_path_measure_new (path);
length = gsk_path_measure_get_length (measure);
/* chosen high enough to stop the testsuite from failing */
@@ -275,9 +466,9 @@ test_closest_point (void)
for (i = 0; i < 10; i++)
{
- path1 = create_random_path ();
+ path1 = create_random_path (G_MAXUINT);
measure1 = gsk_path_measure_new_with_tolerance (path1, tolerance);
- path2 = create_random_path ();
+ path2 = create_random_path (G_MAXUINT);
measure2 = gsk_path_measure_new_with_tolerance (path2, tolerance);
builder = gsk_path_builder_new ();
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