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#include <gtest/gtest.h>
#include <jellyfish/simple_circular_buffer.hpp>
namespace {
static const int capa = 16;
typedef jellyfish::simple_circular_buffer::pre_alloc<int, capa> test_simple_circular_buffer;
TEST(SimpleCircularBufferTest, FillEmpty) {
int ary[capa];
test_simple_circular_buffer buffer(ary);
EXPECT_EQ(capa, buffer.capacity());
EXPECT_TRUE(buffer.empty());
for(int i = 0; i < buffer.capacity(); ++i) {
SCOPED_TRACE(::testing::Message() << "i=" << i);
EXPECT_FALSE(buffer.full());
EXPECT_EQ(i, buffer.size());
buffer.push_back(i);
EXPECT_EQ(i, buffer.back());
EXPECT_FALSE(buffer.empty());
}
EXPECT_TRUE(buffer.full());
for(int i = 0; i < buffer.capacity(); ++i) {
SCOPED_TRACE(::testing::Message() << "i=" << i);
EXPECT_FALSE(buffer.empty());
EXPECT_EQ(i, buffer.front());
EXPECT_EQ(buffer.capacity() - i, buffer.size());
buffer.pop_front();
EXPECT_FALSE(buffer.full());
}
EXPECT_TRUE(buffer.empty());
EXPECT_EQ(0, buffer.size());
}
TEST(SimpleCircularBufferTest, Usefull) {
int ary[capa];
test_simple_circular_buffer buffer(ary);
EXPECT_EQ(capa, buffer.capacity());
int i = 0;
for( ; i < buffer.capacity(); ++i) {
EXPECT_TRUE(buffer.push_back());
buffer.back() = i;
}
for( ; i < 10 * buffer.capacity(); ++i) {
EXPECT_EQ(i - capa, buffer.front());
buffer.pop_front();
EXPECT_TRUE(buffer.push_back());
buffer.back() = i;
}
}
} // namespace {
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