Re-land r9059 with empty cityhash.gyp, instead of deleted cityhash.gyp

tests/ChecksumTest.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Test.h"
 
 #include "SkChecksum.h"
-#include "SkCityHash.h"
 
 // Word size that is large enough to hold results of any checksum type.
 typedef uint64_t checksum_result;
 
 namespace skiatest {
     class ChecksumTestClass : public Test {
     public:
         static Test* Factory(void*) {return SkNEW(ChecksumTestClass); }
     protected:
         virtual void onGetName(SkString* name) { name->set("Checksum"); }
         virtual void onRun(Reporter* reporter) {
             this->fReporter = reporter;
             RunTest();
         }
     private:
         enum Algorithm {
-            kSkChecksum,
-            kSkCityHash32,
-            kSkCityHash64
+            kSkChecksum
         };
 
         // Call Compute(data, size) on the appropriate checksum algorithm,
         // depending on this->fWhichAlgorithm.
         checksum_result ComputeChecksum(const char *data, size_t size) {
             switch(fWhichAlgorithm) {
             case kSkChecksum:
                 REPORTER_ASSERT_MESSAGE(fReporter,
                                         reinterpret_cast<uintptr_t>(data) % 4 == 0,
                                         "test data pointer is not 32-bit aligned");
                 REPORTER_ASSERT_MESSAGE(fReporter, SkIsAlign4(size),
                                         "test data size is not 32-bit aligned");
                 return SkChecksum::Compute(reinterpret_cast<const uint32_t *>(data), size);
-            case kSkCityHash32:
-                return SkCityHash::Compute32(data, size);
-            case kSkCityHash64:
-                return SkCityHash::Compute64(data, size);
             default:
                 SkString message("fWhichAlgorithm has unknown value ");
                 message.appendf("%d", fWhichAlgorithm);
                 fReporter->reportFailed(message);
             }
             // we never get here
             return 0;
         }
 
         // Confirm that the checksum algorithm (specified by fWhichAlgorithm)
@@ skipping 43 matching lines @@
                 *ptr++ = ((seed+i) & 0x7f);
             }
             checksum_result result = ComputeChecksum(start, len);
             return result;
         }
 
         void RunTest() {
             // Test self-consistency of checksum algorithms.
             fWhichAlgorithm = kSkChecksum;
             TestChecksumSelfConsistency(128);
-            fWhichAlgorithm = kSkCityHash32;
-            TestChecksumSelfConsistency(128);
-            fWhichAlgorithm = kSkCityHash64;
-            TestChecksumSelfConsistency(128);
 
             // Test checksum results that should be consistent across
             // versions and platforms.
             fWhichAlgorithm = kSkChecksum;
             REPORTER_ASSERT(fReporter, ComputeChecksum(NULL, 0) == 0);
-            fWhichAlgorithm = kSkCityHash32;
-            REPORTER_ASSERT(fReporter, ComputeChecksum(NULL, 0) == 0xdc56d17a);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(4)   == 0x616e1132);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(8)   == 0xeb0fd2d6);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(128) == 0x5321e430);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(132) == 0x924a10e4);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(256) == 0xd4de9dc9);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(260) == 0xecf0325d);
-            fWhichAlgorithm = kSkCityHash64;
-            REPORTER_ASSERT(fReporter, ComputeChecksum(NULL, 0) == 0x9ae16a3b2f90404fULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(4)   == 0x82bffd898958e540ULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(8)   == 0xad5a13e1e8e93b98ULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(128) == 0x10b153630af1f395ULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(132) == 0x7db71dc4adcc6647ULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(256) == 0xeee763519b91b010ULL);
-            REPORTER_ASSERT(fReporter, GetTestDataChecksum(260) == 0x2fe19e0b2239bc23ULL);
 
             // TODO: note the weakness exposed by these collisions...
             // We need to improve the SkChecksum algorithm.
             // We would prefer that these asserts FAIL!
             // Filed as https://code.google.com/p/skia/issues/detail?id=981
             // ('SkChecksum algorithm allows for way too many collisions')
             fWhichAlgorithm = kSkChecksum;
             REPORTER_ASSERT(fReporter,
                 GetTestDataChecksum(128) == GetTestDataChecksum(256));
             REPORTER_ASSERT(fReporter,
                 GetTestDataChecksum(132) == GetTestDataChecksum(260));
         }
 
         Reporter* fReporter;
         Algorithm fWhichAlgorithm;
     };
 
     static TestRegistry gReg(ChecksumTestClass::Factory);
 }