[babl] tests: add more float->8bit tests

[Ãyvind KolÃs <ok src gnome org>]

commit ffcd2ce5a5ed5d36a6a58dc8e7db35ee91a4af8a
Author: Ãyvind KolÃs <pippin gimp org>
Date:   Wed May 2 23:10:16 2012 +0200

    tests: add more float->8bit tests

 tests/Makefile.am     |    3 ++
 tests/float-to-8bit.c |   97 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+), 0 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index b48aee5..3d74227 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -11,6 +11,7 @@ TESTS =				\
 	babl_class_name		\
 	extract \
 	floatclamp \
+	float-to-8bit \
 	types			\
 	palette \
 	extract \
@@ -29,6 +30,8 @@ endif
 LDADD = $(top_builddir)/babl/libbabl- BABL_API_VERSION@.la \
 	$(MATH_LIB)
 
+EXTRA_DIST=common.inc
+
 noinst_PROGRAMS =		\
 	introspect		\
 	babl_fish_path_fitness	\
diff --git a/tests/float-to-8bit.c b/tests/float-to-8bit.c
new file mode 100644
index 0000000..f415e96
--- /dev/null
+++ b/tests/float-to-8bit.c
@@ -0,0 +1,97 @@
+/* babl - dynamically extendable universal pixel conversion library.
+ * Copyright (C) 2005, Ãyvind KolÃs.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include "babl.h"
+
+#include "common.inc"
+
+
+int
+main (int    argc,
+      char **argv)
+{
+  int OK = 1;
+  babl_init ();
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][4]  = {{ 55, 0, 0, 255 }, {51,77,128,153}, {0,255,255,255}};
+
+    CHECK_CONV("float -> u8 1", unsigned char,
+        babl_format("R'G'B'A float"),
+        babl_format("R'G'B'A u8"),
+        in, out);
+  }
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][4]  = {{ 10, 0, 0, 255 }, {8,19,55,153}, {0,255,255,255}};
+
+    CHECK_CONV("float -> u8 2", unsigned char,
+        babl_format("R'G'B'A float"),
+        babl_format("RGBA u8"),
+        in, out);
+  }
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][4]  = {{ 55, 0, 0, 255 }, {51,77,128,153}, {0,255,255,255}};
+
+    CHECK_CONV("float -> u8 3", unsigned char,
+        babl_format("RGBA float"),
+        babl_format("RGBA u8"),
+        in, out);
+  }
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][3]  = {{128, 0, 0}, {124,149,188}, {0,255,255}};
+
+    CHECK_CONV("float -> u8 4", unsigned char,
+        babl_format("RGBA float"),
+        babl_format("R'G'B' u8"),
+        in, out);
+  }
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][4]  = {{128, 0, 0, 255 }, {156,188,235,153}, {0,156,213,255}};
+
+    CHECK_CONV("float -> u8 5", unsigned char,
+        babl_format("RaGaBaA float"),
+        babl_format("R'G'B'A u8"),
+        in, out);
+  }
+
+  {
+    float in[][4]   = {{ 0.21582, -0.55, -0.14, 1.0 }, {0.2, 0.3, 0.5, 0.6}, {0.0, 1.0, 2.0, 3.0}};
+    unsigned char out[][4]  = {{55, 0, 0, 255 }, {85,128,212,153}, {0,255,255,255}};
+
+    CHECK_CONV("float -> u8 6", unsigned char,
+        babl_format("R'aG'aB'aA float"),
+        babl_format("R'G'B'A u8"),
+        in, out);
+  }
+
+  babl_exit ();
+  return !OK;
+}