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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/data/simple_buffer.h>
using namespace vespalib;
void checkMemory(const string &expect, const Memory &mem) {
EXPECT_EQUAL(expect, string(mem.data, mem.size));
}
void checkBuffer(const string &expect, const SimpleBuffer &buf) {
TEST_DO(checkMemory(expect, buf.get()));
}
TEST("simple buffer") {
SimpleBuffer buf;
TEST_DO(checkBuffer("", buf));
{ // read from empty buffer
EXPECT_EQUAL(0u, buf.obtain().size);
}
{ // write to buffer
WritableMemory mem = buf.reserve(10);
TEST_DO(checkBuffer("", buf));
EXPECT_EQUAL(10u, mem.size);
mem.data[0] = 'a';
mem.data[1] = 'b';
mem.data[2] = 'c';
EXPECT_EQUAL(&buf, &buf.commit(3));
mem = buf.reserve(0);
TEST_DO(checkBuffer("abc", buf));
EXPECT_EQUAL(0u, mem.size);
}
{ // read without evicting last byte
Memory mem = buf.obtain();
TEST_DO(checkBuffer("abc", buf));
TEST_DO(checkMemory("abc", mem));
EXPECT_EQUAL(&buf, &buf.evict(2));
mem = buf.obtain();
TEST_DO(checkBuffer("c", buf));
TEST_DO(checkMemory("c", mem));
mem = buf.obtain();
TEST_DO(checkBuffer("c", buf));
TEST_DO(checkMemory("c", mem));
}
{ // write more to buffer
WritableMemory mem = buf.reserve(10);
EXPECT_EQUAL(10u, mem.size);
TEST_DO(checkBuffer("c", buf));
mem.data[0] = 'd';
EXPECT_EQUAL(&buf, &buf.commit(1));
mem = buf.reserve(5);
TEST_DO(checkBuffer("cd", buf));
EXPECT_EQUAL(5u, mem.size);
}
{ // read until end
Memory mem = buf.obtain();
TEST_DO(checkBuffer("cd", buf));
TEST_DO(checkMemory("cd", mem));
EXPECT_EQUAL(&buf, &buf.evict(1));
mem = buf.obtain();
TEST_DO(checkBuffer("d", buf));
TEST_DO(checkMemory("d", mem));
EXPECT_EQUAL(&buf, &buf.evict(1));
mem = buf.obtain();
TEST_DO(checkBuffer("", buf));
TEST_DO(checkMemory("", mem));
}
}
TEST("require that add works as expected") {
SimpleBuffer buf;
buf.add('a').add('b').add('c');
EXPECT_EQUAL(buf.get(), Memory("abc"));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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