Initial import

test/dsp/core/illumination_test.c

@@ -0,0 +1,50 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program 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             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "dsp/core/core.h"
+#include "dsp/core/illumination.h"
+#include "libc/log/log.h"
+#include "libc/math.h"
+#include "libc/testlib/ezbench.h"
+#include "libc/testlib/testlib.h"
+#include "tool/viz/lib/formatstringtable-testlib.h"
+
+TEST(GetChromaticAdaptationMatrix, testSuperiorIlluminationBannedInCalifornia) {
+  double M[3][3];
+  GetChromaticAdaptationMatrix(M, kIlluminantD65, kIlluminantA);
+  EXPECT_DBLMATRIXEQ(5, rint, 3, 3, M, "\n\
+1.21646  .11099 -.15493\n\
+ .15333  .91523   -.056\n\
+-.02395   .0359  .31475");
+}
+
+TEST(GetChromaticAdaptationMatrix, testD65ToD50_soWeCanCieLab) {
+  double M[3][3];
+  GetChromaticAdaptationMatrix(M, kIlluminantD65, kIlluminantD50);
+  EXPECT_DBLMATRIXEQ(6, rint, 3, 3, M, "\n\
+1.047811  .022887 -.050127\n\
+ .029542  .990484 -.017049\n\
+-.009234  .015044  .752132");
+}
+
+BENCH(GetChromaticAdaptationMatrix, bench) {
+  double M[3][3];
+  EZBENCH2("GetChromaticAdaptationMatrix", donothing,
+           GetChromaticAdaptationMatrix(M, kIlluminantD65, kIlluminantA));
+}