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-rw-r--r--test/dash-zero-length.c110
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diff --git a/test/dash-zero-length.c b/test/dash-zero-length.c
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+/*
+ * Copyright © 2006 Jeff Muizelaar
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Jeff Muizelaar. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Jeff Muizelaar. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * JEFF MUIZELAAR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL JEFF MUIZELAAR BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Jeff Muizelaar <jeff@infidigm.net>
+ */
+
+#include "cairo-test.h"
+
+#define IMAGE_WIDTH 19
+#define IMAGE_HEIGHT 61
+
+/* A test of the two extremes of dashing: a solid line
+ * and an invisible one. Also test that capping works
+ * on invisible lines.
+ */
+
+static void
+draw_dash (cairo_t *cr, double *dash, int num_dashes)
+{
+ cairo_set_dash (cr, dash, num_dashes, 0.0);
+ cairo_move_to (cr, 1, 2);
+ cairo_line_to (cr, 18, 2);
+ cairo_stroke (cr);
+ cairo_translate (cr, 0, 3);
+}
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ static double solid_line[] = { 4, 0 };
+ static double invisible_line[] = { 0, 4 };
+ static double dotted_line[] = { 0, 6 };
+ static double zero_1_of_3[] = { 0, 2, 3 };
+ static double zero_2_of_3[] = { 1, 0, 3 };
+ static double zero_3_of_3[] = { 1, 2, 0 };
+ static double zero_1_of_4[] = { 0, 2, 3, 4 };
+ static double zero_2_of_4[] = { 1, 0, 3, 4 };
+ static double zero_3_of_4[] = { 1, 2, 0, 4 };
+ static double zero_4_of_4[] = { 1, 2, 3, 0 };
+ static double zero_1_2_of_4[] = { 0, 0, 3, 4 };
+ static double zero_1_3_of_4[] = { 0, 2, 0, 4 };
+/* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */
+#if BUG_FIXED_IN_GHOSTSCRIPT
+ static double zero_1_4_of_4[] = { 0, 2, 3, 0 };
+#endif
+ static double zero_2_3_of_4[] = { 1, 0, 0, 4 };
+ static double zero_2_4_of_4[] = { 1, 0, 3, 0 };
+ static double zero_3_4_of_4[] = { 1, 2, 0, 0 };
+ static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 };
+ static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 };
+ static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 };
+ static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 };
+
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_set_line_width (cr, 2);
+
+ draw_dash (cr, solid_line, 2);
+ draw_dash (cr, invisible_line, 2);
+
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+ draw_dash (cr, dotted_line, 2);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+
+ draw_dash (cr, zero_1_of_3, 3);
+ draw_dash (cr, zero_2_of_3, 3);
+ draw_dash (cr, zero_3_of_3, 3);
+ draw_dash (cr, zero_1_of_4, 4);
+ draw_dash (cr, zero_2_of_4, 4);
+ draw_dash (cr, zero_3_of_4, 4);
+ draw_dash (cr, zero_4_of_4, 4);
+ draw_dash (cr, zero_1_2_of_4, 4);
+ draw_dash (cr, zero_1_3_of_4, 4);
+#if BUG_FIXED_IN_GHOSTSCRIPT
+ draw_dash (cr, zero_1_4_of_4, 4);
+#endif
+ draw_dash (cr, zero_2_3_of_4, 4);
+ draw_dash (cr, zero_2_4_of_4, 4);
+ draw_dash (cr, zero_3_4_of_4, 4);
+ draw_dash (cr, zero_1_2_3_of_4, 4);
+ draw_dash (cr, zero_1_2_4_of_4, 4);
+ draw_dash (cr, zero_1_3_4_of_4, 4);
+ draw_dash (cr, zero_2_3_4_of_4, 4);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (dash_zero_length,
+ "Tests cairo_set_dash with zero length",
+ "dash, stroke", /* keywords */
+ NULL, /* requirements */
+ IMAGE_WIDTH, IMAGE_HEIGHT,
+ NULL, draw)