Function TEST

Tests/Hash64_Test.cpp:32–91

#include "Engine/Hash64.h"

NATRON_NAMESPACE_USING

TEST(Hash64,
     GeneralTest)
{
    Hash64 hash1;

    ASSERT_FALSE( hash1.valid() ) << "A fresh hash is not valid.";

    hash1.computeHash();
    ASSERT_FALSE( hash1.valid() ) << "Compute on an empty hash doesn't make it valid";

    hash1.append<int>(3);
    ASSERT_FALSE( hash1.valid() ) << "You need to call compute to make the hash valid";

    hash1.computeHash();
    ASSERT_TRUE( hash1.valid() );

    hash1.reset();
    ASSERT_FALSE( hash1.valid() );

    srand(2000);
    // coverity[dont_call]
    int hash1ElementCount = rand() % 100 + 80;
    std::vector<int> hash1Elements;
    for (int i = 0; i < hash1ElementCount; ++i) {
        // coverity[dont_call]
        int v = rand();
        hash1Elements.push_back(v);
        hash1.append<int>(v);
    }

    hash1.computeHash();
    ASSERT_TRUE( hash1.valid() );

    Hash64 hash2;
    for (int i = 0; i < hash1ElementCount; ++i) {
        hash2.append<int>(hash1Elements[i]);
    }
    hash2.computeHash();
    ASSERT_TRUE( hash2.valid() );

    EXPECT_EQ( hash1.value(), hash2.value() ) << "Hashs with same elements should be equal.";
    EXPECT_EQ(hash1, hash2);

    hash2.reset();
    ASSERT_FALSE( hash2.valid() );

    // coverity[dont_call]
    int hash2ElementCount = hash1ElementCount + (rand() % 10 + 1);
    for (int i = 0; i < hash2ElementCount; ++i) {
        // coverity[dont_call]
        hash2.append<int>( rand() );
    }
    hash2.computeHash();
    ASSERT_TRUE( hash2.valid() );

    EXPECT_NE( hash1.value(), hash2.value() );