62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
/** @file DCircularBuffer.test.cpp
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*
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* @author Roland Conybeare, Jan 2026
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**/
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#include "DCircularBuffer.hpp"
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#include "print.hpp"
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#include <xo/indentlog/print/tag.hpp>
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#include <catch2/catch.hpp>
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#include <unistd.h> // for getpagesize() on osx
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namespace xo {
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using xo::mm::DCircularBuffer;
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using xo::mm::CircularBufferConfig;
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using xo::mm::span;
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using std::byte;
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namespace ut {
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TEST_CASE("DCircularBuffer-tiny", "[arena][DCircularBuffer]")
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{
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// buffer works with bytes, not chars
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CircularBufferConfig cfg { .name_ = "testcbuf",
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.max_capacity_ = 1 };
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DCircularBuffer buf = DCircularBuffer::map(cfg);
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REQUIRE(buf.reserved_range().size() == getpagesize());
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REQUIRE(buf.mapped_range().size() == 0);
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REQUIRE(buf.occupied_range().size() == 0);
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REQUIRE(buf.input_range().size() == 0);
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REQUIRE(buf.verify_ok(verify_policy::log_only()));
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REQUIRE(buf.get_append_span(1).size() == getpagesize());
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REQUIRE(buf.mapped_range().size() == getpagesize());
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REQUIRE(buf.occupied_range().size() == 0);
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REQUIRE(buf.input_range().size() == 0);
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auto s0 = DCircularBuffer::const_span_type::from_cstr("abcdefghijk");
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/* return value is unaccepted suffix of input */
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REQUIRE(buf.append(s0).empty());
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REQUIRE(buf.verify_ok(verify_policy::log_only()));
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REQUIRE(buf.mapped_range().size() == getpagesize());
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REQUIRE(buf.occupied_range().size() == s0.size());
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REQUIRE(buf.input_range().size() == s0.size());
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auto s1 = DCircularBuffer::const_span_type::from_cstr("lmnopq");
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REQUIRE(buf.append(s1).empty());
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REQUIRE(buf.mapped_range().size() == getpagesize());
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REQUIRE(buf.occupied_range().size() == s0.size() + s1.size());
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REQUIRE(buf.occupied_range().to_string_view() == std::string_view("abcdefghijklmnopq"));
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buf.consume(buf.occupied_range().prefix(3));
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REQUIRE(buf.occupied_range().to_string_view() == std::string_view("defghijklmnopq"));
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}
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// TODO: test pin_range() / unpin_range()
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} /*namespace ut*/
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} /*namespace xo*/
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/* end DCircularBuffer.test.cpp */
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