mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-09-20 16:15:51 +00:00
8d7fdeb633
* WIP file editing * WIP file editing * Add "on_pop" handler to navigation. * WIP Editing * WIP for draft * Fix mock and unit tests, support +newline at end. * Clean up Painter API and use string_view * Fix optional rvalue functions * Fix Result 'take' to be more standard * FileWrapper stack buffer reads * Grasping at straws * Nit * Move set_on_pop impl to cpp * Workaround "Open" when file not dirty. --------- Co-authored-by: kallanreed <kallanreed@outlook.com>
698 lines
19 KiB
C++
698 lines
19 KiB
C++
/*
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* Copyright (C) 2023 Kyle Reed
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "doctest.h"
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#include "file.hpp"
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#include "file_wrapper.hpp"
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#include <cstring>
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#include <cstdio>
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#include <string>
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/* Mocks the File interface with a backing string. */
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class MockFile {
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public:
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using Error = File::Error;
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using Offset = File::Offset;
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using Size = File::Size;
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template <typename T>
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using Result = File::Result<T>;
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MockFile(std::string data)
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: data_{std::move(data)} {}
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Size size() { return data_.size(); }
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Result<Offset> seek(uint32_t offset) {
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if ((int32_t)offset < 0)
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return {static_cast<Error>(FR_BAD_SEEK)};
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auto previous = offset_;
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if (offset > size())
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data_.resize(offset);
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offset_ = offset;
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return previous;
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}
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Result<Offset> truncate() {
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data_.resize(offset_);
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return offset_;
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}
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Result<Size> read(void* data, Size bytes_to_read) {
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if (offset_ + bytes_to_read > size())
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bytes_to_read = size() - offset_;
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if (bytes_to_read == 0 || bytes_to_read > size()) // NB: underflow wrap
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return 0;
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memcpy(data, &data_[offset_], bytes_to_read);
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offset_ += bytes_to_read;
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return bytes_to_read;
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}
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Result<Size> write(const void* data, Size bytes_to_write) {
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auto new_offset = offset_ + bytes_to_write;
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if (new_offset >= size())
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data_.resize(new_offset);
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memcpy(&data_[offset_], data, bytes_to_write);
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offset_ = new_offset;
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return bytes_to_write;
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}
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Optional<Error> sync() {
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return {};
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}
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std::string data_;
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uint32_t offset_{0};
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};
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/* Verifies correctness of MockFile. */
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TEST_SUITE("Test MockFile") {
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SCENARIO("File size") {
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GIVEN("Empty string") {
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MockFile f{""};
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THEN("size() should be 0.") {
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CHECK_EQ(f.size(), 0);
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}
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}
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GIVEN("Not empty string") {
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MockFile f{"abc"};
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THEN("size() should be string length.") {
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CHECK_EQ(f.size(), 3);
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}
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}
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}
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SCENARIO("File seek") {
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GIVEN("Valid file") {
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MockFile f{"abc\ndef"};
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auto init_size = f.size();
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WHEN("seek()") {
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f.seek(4);
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THEN("offset_ should be updated.") {
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CHECK_EQ(f.offset_, 4);
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}
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}
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WHEN("seek() negative offset") {
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auto r = f.seek(-1);
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THEN("Result should be bad_seek.") {
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CHECK(r.is_error());
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CHECK_EQ(r.error().code(), FR_BAD_SEEK);
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}
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}
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WHEN("seek() offset is size()") {
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auto r = f.seek(f.size());
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THEN("File should not grow.") {
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CHECK(r.is_ok());
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CHECK_EQ(f.size(), init_size);
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}
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}
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WHEN("seek() offset > size()") {
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auto r = f.seek(f.size() + 1);
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THEN("File should grow.") {
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CHECK(r.is_ok());
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CHECK_EQ(f.size(), init_size + 1);
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}
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}
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WHEN("seek() offset < size()") {
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auto r = f.seek(1);
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THEN("Result should be ok.") {
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CHECK(r.is_ok());
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}
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r = f.seek(3);
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THEN("Result should be previous offset") {
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CHECK(r);
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CHECK_EQ(*r, 1);
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}
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}
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}
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}
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SCENARIO("File read") {
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GIVEN("Valid file") {
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MockFile f{"abc\ndef"};
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const auto buf_len = 10;
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std::string buf;
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buf.resize(buf_len);
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WHEN("Reading") {
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auto r = f.read(&buf[0], 3);
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THEN("Result should be number of bytes read") {
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CHECK(r);
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CHECK_EQ(*r, 3);
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}
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buf.resize(*r);
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THEN("Buffer should contain read data") {
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CHECK_EQ(buf.length(), 3);
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CHECK_EQ(buf, "abc");
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}
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r = f.read(&buf[0], 3);
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THEN("Reading should continue where it left off") {
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CHECK_EQ(buf.length(), 3);
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CHECK_EQ(buf, "\nde");
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}
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r = f.read(&buf[0], 3);
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THEN("Reading should stop at the end of the file") {
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CHECK(r);
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CHECK_EQ(*r, 1);
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buf.resize(*r);
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CHECK_EQ(buf.length(), 1);
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CHECK_EQ(buf, "f");
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}
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}
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WHEN("Reading block larger than file size") {
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auto r = f.read(&buf[0], buf_len);
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buf.resize(*r);
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THEN("It should read to file end.") {
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CHECK(r);
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CHECK_EQ(*r, 7);
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CHECK_EQ(buf, f.data_);
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}
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}
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}
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}
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SCENARIO("File write") {
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GIVEN("Valid file") {
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MockFile f{"abc\ndef"};
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WHEN("Writing over existing region") {
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f.write("xyz", 3);
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THEN("It should overwrite") {
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CHECK_EQ(f.data_, "xyz\ndef");
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}
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}
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WHEN("Writing over past end") {
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f.seek(f.size());
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f.write("xyz", 3);
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THEN("It should extend file and write") {
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CHECK_EQ(f.size(), 10);
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CHECK_EQ(f.data_, "abc\ndefxyz");
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}
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}
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}
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}
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// This scenario was tested on device.
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SCENARIO("File truncate") {
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GIVEN("Valid file") {
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MockFile f{"hello world"};
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WHEN("truncating at offset 5") {
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f.seek(5);
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f.truncate();
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THEN("resulting file should be 'hello'.") {
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CHECK_EQ(f.size(), 5);
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CHECK_EQ(f.data_, "hello");
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}
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}
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}
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}
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SCENARIO("File truncate") {
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GIVEN("Valid file") {
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MockFile f{"abc\ndef"};
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auto init_size = f.size();
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WHEN("R/W pointer at end") {
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f.seek(f.size());
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f.truncate();
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THEN("It should not change size.") {
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CHECK_EQ(f.size(), init_size);
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}
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}
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WHEN("R/W pointer in middle") {
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f.seek(3);
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f.truncate();
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THEN("It should change size.") {
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CHECK_EQ(f.size(), 3);
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}
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}
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}
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}
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}
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TEST_SUITE_BEGIN("Test BufferWrapper");
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TEST_CASE("It can wrap a MockFile.") {
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MockFile f{""};
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auto w = wrap_buffer(f);
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}
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SCENARIO("Empty file") {
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GIVEN("An empty file") {
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MockFile f{""};
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auto w = wrap_buffer(f);
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WHEN("Initializing") {
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CHECK_EQ(w.size(), 0);
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REQUIRE_EQ(w.line_count(), 1);
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}
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WHEN("Getting line_range()") {
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auto r = w.line_range(0);
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CHECK(r);
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CHECK_EQ(r->start, 0);
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CHECK_EQ(r->end, 1);
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}
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WHEN("Getting line_length()") {
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CHECK_EQ(w.line_length(0), 1);
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}
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}
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}
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SCENARIO("Basic file") {
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GIVEN("A file") {
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MockFile f{"abc\ndef"};
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auto w = wrap_buffer(f);
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WHEN("Initializing") {
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CHECK_EQ(w.size(), 7);
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REQUIRE_EQ(w.line_count(), 2);
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}
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WHEN("Getting line_range()") {
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auto r = w.line_range(0);
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CHECK(r);
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CHECK_EQ(r->start, 0);
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CHECK_EQ(r->end, 4);
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r = w.line_range(1);
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CHECK(r);
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CHECK_EQ(r->start, 4);
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CHECK_EQ(r->end, 7);
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}
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WHEN("Getting line_length()") {
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CHECK_EQ(w.line_length(0), 4);
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CHECK_EQ(w.line_length(1), 3);
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}
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}
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}
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SCENARIO("Reading file lines.") {
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GIVEN("A valid file") {
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MockFile f{"abc\ndef"};
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auto w = wrap_buffer(f);
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WHEN("Reading a line") {
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auto str = w.get_text(0, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(str->length(), 4); // Includes '\n'
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CHECK_EQ(*str, "abc\n");
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}
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}
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WHEN("Reading the last line") {
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auto str = w.get_text(w.line_count() - 1, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(str->length(), 3);
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CHECK_EQ(*str, "def");
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}
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}
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WHEN("Reading past the last line") {
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auto str = w.get_text(w.line_count(), 0, 10);
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THEN("It should return empty value.") {
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REQUIRE(!str);
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}
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}
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}
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}
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SCENARIO("Reading with cache miss.") {
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GIVEN("A valid file") {
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MockFile f{"abc\ndef\nghi\njkl\nmno"};
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constexpr uint32_t cache_size = 2;
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auto w = wrap_buffer<cache_size>(f);
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CHECK_EQ(w.start_line(), 0);
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WHEN("Reading a cached line") {
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auto str = w.get_text(0, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(*str, "abc\n");
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}
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}
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WHEN("Reading line after last cached line.") {
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auto str = w.get_text(w.line_count() - 1, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(*str, "mno");
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}
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THEN("It should push cache window forward to include line.") {
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CHECK_EQ(w.start_line(), w.line_count() - cache_size);
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}
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}
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WHEN("Reading line before first cached line.") {
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// First move cache forward to end.
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w.get_text(w.line_count() - 1, 0, 10);
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auto str = w.get_text(1, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(*str, "def\n");
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}
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THEN("It should push cache window backward to include line.") {
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CHECK_EQ(w.start_line(), 1);
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}
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}
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WHEN("Reading line 0 before first cached line.") {
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// First move cache forward to end, then back to beginning.
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w.get_text(w.line_count() - 1, 0, 10);
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auto str = w.get_text(0, 0, 10);
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THEN("It should read exactly one line.") {
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REQUIRE(str);
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CHECK_EQ(*str, "abc\n");
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}
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THEN("It should push cache window backward to include line.") {
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CHECK_EQ(w.start_line(), 0);
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}
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}
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}
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}
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SCENARIO("Replace range of same size.") {
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GIVEN("A file with lines") {
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MockFile f{"abc\ndef"};
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auto w = wrap_buffer(f);
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auto init_line_count = w.line_count();
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auto init_size = w.size();
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WHEN("Replacing range without changing size") {
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w.replace_range({0, 3}, "xyz");
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CHECK_EQ("xyz\ndef", f.data_);
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THEN("size should not change.") {
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CHECK_EQ(w.size(), init_size);
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}
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THEN("text should be replaced.") {
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auto str = w.get_text(0, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "xyz\n");
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}
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}
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}
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}
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SCENARIO("Replace range that increases size.") {
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GIVEN("A file with lines") {
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MockFile f{"abc\ndef"};
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auto w = wrap_buffer(f);
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auto init_line_count = w.line_count();
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auto init_size = w.size();
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WHEN("Replacing range with larger size") {
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w.replace_range({0, 3}, "wxyz");
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CHECK_EQ(f.data_, "wxyz\ndef");
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THEN("size should be increased.") {
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CHECK_EQ(w.size(), init_size + 1);
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}
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THEN("text should be replaced.") {
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auto str = w.get_text(0, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "wxyz\n");
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}
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THEN("following text should not be modified.") {
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auto str = w.get_text(1, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "def");
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}
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}
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}
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GIVEN("A file larger than internal buffer_size (512)") {
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std::string content = std::string(599, 'a');
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content.push_back('x');
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MockFile f{content};
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auto w = wrap_buffer(f);
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auto init_line_count = w.line_count();
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auto init_size = w.size();
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WHEN("Replacing range with larger size") {
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w.replace_range({0, 2}, "bbb");
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THEN("size should be increased.") {
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CHECK_EQ(w.size(), init_size + 1);
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}
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THEN("text should be replaced.") {
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auto str = w.get_text(0, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "bbbaaaaaaa");
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}
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THEN("end text should be preserved.") {
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CHECK_EQ(f.data_.back(), 'x');
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}
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}
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}
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}
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SCENARIO("Replace range that decreases size.") {
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GIVEN("A file with lines") {
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MockFile f{"abc\ndef"};
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auto w = wrap_buffer(f);
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auto init_line_count = w.line_count();
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auto init_size = w.size();
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WHEN("Replacing range with smaller size") {
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w.replace_range({0, 3}, "yz");
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CHECK_EQ(f.data_, "yz\ndef");
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THEN("size should be decreased.") {
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CHECK_EQ(w.size(), init_size - 1);
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}
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THEN("text should be replaced.") {
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auto str = w.get_text(0, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "yz\n");
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}
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THEN("following text should not be modified.") {
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auto str = w.get_text(1, 0, 10);
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REQUIRE(str);
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CHECK_EQ(*str, "def");
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}
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}
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}
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GIVEN("A file larger than internal buffer_size (512)") {
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std::string content = std::string(599, 'a');
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content.push_back('x');
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MockFile f{content};
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auto w = wrap_buffer(f);
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auto init_line_count = w.line_count();
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auto init_size = w.size();
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WHEN("Replacing range with smaller size") {
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w.replace_range({0, 10}, "b");
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THEN("size should be decreased.") {
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CHECK_EQ(w.size(), init_size - 9);
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}
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THEN("text should be replaced.") {
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auto str = w.get_text(0, 0, 10);
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REQUIRE(str);
|
|
CHECK_EQ(*str, "baaaaaaaaa");
|
|
}
|
|
|
|
THEN("end should be moved toward front.") {
|
|
CHECK_EQ(f.data_.back(), 'x');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SCENARIO("Insert line.") {
|
|
GIVEN("A file with lines") {
|
|
MockFile f{"abc\ndef\nghi\n"};
|
|
auto w = wrap_buffer(f);
|
|
auto init_line_count = w.line_count();
|
|
auto init_size = w.size();
|
|
|
|
WHEN("Inserting before the first line") {
|
|
w.insert_line(0);
|
|
|
|
THEN("should increment line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count + 1);
|
|
CHECK_EQ(w.size(), init_size + 1);
|
|
}
|
|
|
|
THEN("should insert empty line content.") {
|
|
auto str = w.get_text(0, 0, 10);
|
|
CHECK_EQ(*str, "\n");
|
|
}
|
|
|
|
THEN("first line should be pushed down.") {
|
|
auto str = w.get_text(1, 0, 10);
|
|
CHECK_EQ(*str, "abc\n");
|
|
}
|
|
}
|
|
|
|
WHEN("Inserting before the last line") {
|
|
w.insert_line(2);
|
|
|
|
THEN("should increment line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count + 1);
|
|
CHECK_EQ(w.size(), init_size + 1);
|
|
}
|
|
|
|
THEN("should insert empty line content.") {
|
|
auto str = w.get_text(2, 0, 10);
|
|
CHECK_EQ(*str, "\n");
|
|
}
|
|
|
|
THEN("last line should be pushed down.") {
|
|
auto str = w.get_text(3, 0, 10);
|
|
CHECK_EQ(*str, "ghi\n");
|
|
}
|
|
}
|
|
|
|
WHEN("Inserting after the last line") {
|
|
w.insert_line(w.line_count());
|
|
|
|
THEN("should increment line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count + 1);
|
|
CHECK_EQ(w.size(), init_size + 1);
|
|
}
|
|
|
|
THEN("should insert empty line content.") {
|
|
auto str = w.get_text(3, 0, 10);
|
|
CHECK_EQ(*str, "\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SCENARIO("Delete line.") {
|
|
GIVEN("A file with lines") {
|
|
MockFile f{"abc\ndef\nghi"};
|
|
auto w = wrap_buffer(f);
|
|
auto init_line_count = w.line_count();
|
|
auto init_size = w.size();
|
|
|
|
WHEN("Deleting the first line") {
|
|
w.delete_line(0);
|
|
|
|
THEN("should decrement line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count - 1);
|
|
CHECK_EQ(w.size(), init_size - 4);
|
|
}
|
|
|
|
THEN("should remove first line content.") {
|
|
auto str = w.get_text(0, 0, 10);
|
|
CHECK_EQ(*str, "def\n");
|
|
}
|
|
}
|
|
|
|
WHEN("Deleting the middle line") {
|
|
w.delete_line(1);
|
|
|
|
THEN("should decrement line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count - 1);
|
|
CHECK_EQ(w.size(), init_size - 4);
|
|
}
|
|
|
|
THEN("should remove middle line content.") {
|
|
auto str = w.get_text(1, 0, 10);
|
|
CHECK_EQ(*str, "ghi");
|
|
}
|
|
}
|
|
|
|
WHEN("Deleting the last line") {
|
|
w.delete_line(2);
|
|
|
|
THEN("should decrement line count and size.") {
|
|
CHECK_EQ(w.line_count(), init_line_count - 1);
|
|
CHECK_EQ(w.size(), init_size - 3);
|
|
}
|
|
|
|
THEN("should remove last line content.") {
|
|
auto str = w.get_text(2, 0, 10);
|
|
CHECK(!str);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_SUITE_END(); |