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e90073f7dd
Avoid calling libtool to link every single test case, by building just one binary from all the sources. This binary is then given the task of choosing tests to run (based on user selection and individual test requirement), forking each test into its own process and accumulating the results.
203 lines
7.6 KiB
C
203 lines
7.6 KiB
C
/*
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* Copyright © 2006 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Red Hat, Inc. not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Red Hat, Inc. makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Behdad Esfahbod <behdad@behdad.org>
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*/
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/* Related bug 5177
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*
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* In short:
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*
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* _cairo_atsui_font_text_to_glyph with a zero-sized string crashes.
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*
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* Moreover, the fallback path in cairo_scaled_font_text_to_glyphs()
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* when handling a zero-sized string, allocates a zero-sized glyph array
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* and when NULL is returned by malloc, recognizes that as an out-of-memory
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* error. The glibc implementation of malloc() does not return NULL from
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* malloc(0), but I don't think it's a safe assumption.
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*
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* By just bailing out on zero-sized text, we fix both issues.
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*/
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#include "cairo-test.h"
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#define NUM_TEXT 20
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#define TEXT_SIZE 12
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static cairo_bool_t
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text_extents_equal (const cairo_text_extents_t *A,
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const cairo_text_extents_t *B)
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{
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return A->x_bearing == B->x_bearing &&
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A->y_bearing == B->y_bearing &&
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A->width == B->width &&
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A->height == B->height &&
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A->x_advance == B->x_advance &&
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A->y_advance == B->y_advance;
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}
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static cairo_bool_t
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font_extents_equal (const cairo_font_extents_t *A,
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const cairo_font_extents_t *B)
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{
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return A->ascent == B->ascent &&
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A->descent == B->descent &&
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A->height == B->height &&
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A->max_x_advance == B->max_x_advance &&
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A->max_y_advance == B->max_y_advance;
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}
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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const cairo_test_context_t *ctx = cairo_test_get_context (cr);
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cairo_text_extents_t extents, nil_extents;
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cairo_font_extents_t font_extents, nil_font_extents;
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cairo_scaled_font_t *scaled_font;
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cairo_select_font_face (cr, "Bitstream Vera Sans",
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CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size (cr, 16);
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cairo_move_to (cr, 10, 25);
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cairo_show_text (cr, NULL);
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cairo_show_text (cr, "");
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cairo_show_glyphs (cr, NULL, 0);
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cairo_show_glyphs (cr, (void*)8, 0);
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cairo_move_to (cr, 10, 55);
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cairo_text_path (cr, NULL);
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cairo_text_path (cr, "");
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cairo_glyph_path (cr, (void*)8, 0);
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cairo_fill (cr);
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memset (&nil_extents, 0, sizeof (cairo_text_extents_t));
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_text_extents (cr, "", &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_text_extents(\"\"); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_text_extents (cr, NULL, &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_text_extents(NULL); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_glyph_extents (cr, (void*)8, 0, &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_glyph_extents(); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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scaled_font = cairo_get_scaled_font (cr);
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_scaled_font_text_extents (scaled_font, "", &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_scaled_font_text_extents(\"\"); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_scaled_font_text_extents (scaled_font, NULL, &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_scaled_font_text_extents(NULL); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_scaled_font_glyph_extents (scaled_font, (void*)8, 0, &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_scaled_font_glyph_extents(NULL); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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/* Lets also try font size 0 while here */
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cairo_set_font_size (cr, 0);
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memset (&extents, 0xff, sizeof (cairo_text_extents_t));
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cairo_text_extents (cr, "test", &extents);
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if (! text_extents_equal (&extents, &nil_extents)) {
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cairo_test_log (ctx, "Error: cairo_set_font_size(0); cairo_text_extents(\"test\"); extents (%g, %g, %g, %g, %g, %g)\n",
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extents.x_bearing, extents.y_bearing,
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extents.width, extents.height,
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extents.x_advance, extents.y_advance);
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return CAIRO_TEST_FAILURE;
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}
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memset (&nil_font_extents, 0, sizeof (cairo_font_extents_t));
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memset (&font_extents, 0xff, sizeof (cairo_font_extents_t));
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cairo_font_extents (cr, &font_extents);
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if (! font_extents_equal (&font_extents, &nil_font_extents)) {
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cairo_test_log (ctx, "Error: cairo_set_font_size(0); cairo_font_extents(); extents (%g, %g, %g, %g, %g)\n",
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font_extents.ascent, font_extents.descent,
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font_extents.height,
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font_extents.max_x_advance, font_extents.max_y_advance);
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return CAIRO_TEST_FAILURE;
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}
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scaled_font = cairo_get_scaled_font (cr);
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memset (&font_extents, 0xff, sizeof (cairo_font_extents_t));
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cairo_scaled_font_extents (scaled_font, &font_extents);
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if (! font_extents_equal (&font_extents, &nil_font_extents)) {
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cairo_test_log (ctx, "Error: cairo_set_font_size(0); cairo_scaled_font_extents(); extents (%g, %g, %g, %g, %g)\n",
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font_extents.ascent, font_extents.descent,
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font_extents.height,
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font_extents.max_x_advance, font_extents.max_y_advance);
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return CAIRO_TEST_FAILURE;
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}
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (text_zero_len,
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"Tests show_text and text_path with a zero-sized string",
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"text, stress, extents", /* keywords */
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NULL, /* requirements */
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0, 0,
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NULL, draw)
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