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-rw-r--r--test/core/common/CharReaderTest.cpp821
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diff --git a/test/core/common/CharReaderTest.cpp b/test/core/common/CharReaderTest.cpp
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+++ b/test/core/common/CharReaderTest.cpp
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+/*
+ Ousía
+ Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <sstream>
+#include <string>
+#include <iostream>
+
+#include "gtest/gtest.h"
+
+#include <core/common/CharReader.hpp>
+
+namespace ousia {
+
+/* Test data */
+
+// Generates some pseudo-random data
+// (inspired by "Numerical Recipes, Third Edition", Chapter 7.17)
+static std::vector<char> generateData(size_t len)
+{
+ const uint32_t B1 = 17;
+ const uint32_t B2 = 15;
+ const uint32_t B3 = 5;
+ uint32_t v = 0xF3A99148;
+ std::vector<char> res;
+ for (size_t i = 0; i < len; i++) {
+ while (true) {
+ // Advance the random seed
+ v = v ^ (v >> B1);
+ v = v ^ (v << B2);
+ v = v ^ (v >> B3);
+
+ // Replace \n and \r in order to avoid line break processing by the
+ // CharReader
+ char c = v & 0xFF;
+ if (c != '\n' && c != '\r') {
+ res.push_back(c);
+ break;
+ }
+ }
+ }
+ return res;
+}
+
+// For performance tests only
+// static constexpr size_t DATA_LENGTH = 16 * 1024 * 1024 + 795;
+static constexpr size_t DATA_LENGTH = 256 * 1024 + 795;
+static const std::vector<char> DATA = generateData(DATA_LENGTH);
+
+/* Buffer Test */
+
+TEST(Buffer, simpleRead)
+{
+ std::string testStr{"this is a test"};
+
+ // Create buffer with the test string
+ char c;
+ Buffer buf{testStr};
+
+ // Create a read cursor
+ Buffer::CursorId cursor = buf.createCursor();
+
+ // We're not at the end of the stream
+ ASSERT_FALSE(buf.atEnd(cursor));
+
+ // The cursor must be at zero
+ ASSERT_EQ(0U, buf.offset(cursor));
+
+ // Try to read the test string
+ std::string res;
+ while (buf.read(cursor, c)) {
+ res.append(&c, 1);
+ }
+
+ // The cursor must be at the end
+ ASSERT_TRUE(buf.atEnd(cursor));
+
+ // The cursor must be one byond the last byte
+ ASSERT_EQ(testStr.size(), buf.offset(cursor));
+
+ // The two strings must equal
+ ASSERT_EQ(testStr, res);
+
+ buf.deleteCursor(cursor);
+}
+
+TEST(Buffer, cursorManagement)
+{
+ Buffer buf{""};
+
+ Buffer::CursorId c1 = buf.createCursor();
+ Buffer::CursorId c2 = buf.createCursor();
+ Buffer::CursorId c3 = buf.createCursor();
+
+ ASSERT_EQ(0U, c1);
+ ASSERT_EQ(1U, c2);
+ ASSERT_EQ(2U, c3);
+
+ buf.deleteCursor(c2);
+ Buffer::CursorId c4 = buf.createCursor();
+ ASSERT_EQ(1U, c4);
+
+ buf.deleteCursor(c1);
+ buf.deleteCursor(c3);
+ buf.deleteCursor(c4);
+}
+
+TEST(Buffer, twoCursors)
+{
+ std::string testStr{"this is a test"};
+
+ // Create buffer with the test string
+ char c;
+ Buffer buf{testStr};
+
+ // Create two read cursors
+ Buffer::CursorId cur1 = buf.createCursor();
+ Buffer::CursorId cur2 = buf.createCursor();
+
+ ASSERT_FALSE(buf.atEnd(cur1));
+ ASSERT_FALSE(buf.atEnd(cur2));
+
+ // Try to read the test string with the first cursor
+ std::string res1;
+ while (buf.read(cur1, c)) {
+ res1.append(&c, 1);
+ }
+
+ // The first cursor must be at the end
+ ASSERT_TRUE(buf.atEnd(cur1));
+ ASSERT_FALSE(buf.atEnd(cur2));
+
+ // Try to read the test string with the second cursor
+ std::string res2;
+ while (buf.read(cur2, c)) {
+ res2.append(&c, 1);
+ }
+
+ // The first cursor must be at the end
+ ASSERT_TRUE(buf.atEnd(cur1));
+ ASSERT_TRUE(buf.atEnd(cur2));
+
+ // The two strings must equal
+ ASSERT_EQ(testStr, res1);
+ ASSERT_EQ(testStr, res2);
+
+ buf.deleteCursor(cur1);
+ buf.deleteCursor(cur2);
+}
+
+TEST(Buffer, copyCursors)
+{
+ std::string testStr{"test1 test2 test3"};
+
+ // Create buffer with the test string
+ char c;
+ Buffer buf{testStr};
+
+ // Create two read cursors
+ Buffer::CursorId cur1 = buf.createCursor();
+ Buffer::CursorId cur2 = buf.createCursor();
+
+ ASSERT_FALSE(buf.atEnd(cur1));
+ ASSERT_FALSE(buf.atEnd(cur2));
+
+ // Read the first six characters with cursor one
+ std::string res1;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cur1, c)) {
+ res1.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test1 ", res1);
+ ASSERT_FALSE(buf.atEnd(cur1));
+
+ // Copy cur1 to cur2, free cur1
+ buf.copyCursor(cur1, cur2);
+ buf.deleteCursor(cur1);
+
+ std::string res2;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cur2, c)) {
+ res2.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test2 ", res2);
+ ASSERT_FALSE(buf.atEnd(cur2));
+
+ // Create a new cursor as copy of cur2
+ Buffer::CursorId cur3 = buf.createCursor(cur2);
+ std::string res3;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cur3, c)) {
+ res3.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test3", res3);
+
+ ASSERT_TRUE(buf.atEnd(cur3));
+
+ buf.deleteCursor(cur1);
+ buf.deleteCursor(cur2);
+ buf.deleteCursor(cur3);
+}
+
+TEST(Buffer, moveCursor)
+{
+ std::string testStr{"test1 test2 test3"};
+
+ // Create buffer with the test string
+ char c;
+ Buffer buf{testStr};
+ Buffer::CursorId cursor = buf.createCursor();
+
+ // Read the first six characters with cursor one
+ {
+ std::string res;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cursor, c)) {
+ res.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test1 ", res);
+ }
+
+ // Move six bytes backward
+ ASSERT_EQ(-6, buf.moveCursor(cursor, -6));
+ {
+ std::string res;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cursor, c)) {
+ res.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test1 ", res);
+ }
+
+ // Move more than six bytes backward
+ ASSERT_EQ(-6, buf.moveCursor(cursor, -1000));
+ {
+ std::string res;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cursor, c)) {
+ res.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test1 ", res);
+ }
+
+ // Move six bytes forward
+ ASSERT_EQ(6, buf.moveCursor(cursor, 6));
+ {
+ std::string res;
+ for (int i = 0; i < 6; i++) {
+ if (buf.read(cursor, c)) {
+ res.append(&c, 1);
+ }
+ }
+ ASSERT_EQ("test3", res);
+ }
+
+ buf.deleteCursor(cursor);
+}
+
+struct VectorReadState {
+ size_t offs;
+ const std::vector<char> &data;
+
+ VectorReadState(const std::vector<char> &data) : offs(0), data(data) {}
+};
+
+static size_t readFromVector(char *buf, size_t size, void *userData)
+{
+ VectorReadState &state = *(static_cast<VectorReadState *>(userData));
+ size_t tar = std::min(state.offs + size, state.data.size());
+ for (size_t i = state.offs; i < tar; i++) {
+ *buf = state.data[i];
+ buf++;
+ }
+ size_t res = tar - state.offs;
+ state.offs = tar;
+ return res;
+}
+
+TEST(Buffer, simpleStream)
+{
+ VectorReadState state(DATA);
+
+ Buffer buf{readFromVector, &state};
+ Buffer::CursorId cursor = buf.createCursor();
+
+ char c;
+ std::vector<char> res;
+ while (buf.read(cursor, c)) {
+ res.push_back(c);
+ }
+
+ // We must be at the end of the buffer and the cursor offset must be set
+ // correctly
+ ASSERT_TRUE(buf.atEnd(cursor));
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cursor));
+
+ // The read data and the original data must be equal
+ ASSERT_EQ(DATA, res);
+
+ buf.deleteCursor(cursor);
+}
+
+TEST(Buffer, streamTwoCursors)
+{
+ VectorReadState state(DATA);
+
+ Buffer buf{readFromVector, &state};
+ Buffer::CursorId cur1 = buf.createCursor();
+ Buffer::CursorId cur2 = buf.createCursor();
+
+ char c;
+
+ std::vector<char> res1;
+ while (buf.read(cur1, c)) {
+ res1.push_back(c);
+ }
+
+ ASSERT_TRUE(buf.atEnd(cur1));
+ ASSERT_FALSE(buf.atEnd(cur2));
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cur1));
+ ASSERT_EQ(0U, buf.offset(cur2));
+
+ std::vector<char> res2;
+ while (buf.read(cur2, c)) {
+ res2.push_back(c);
+ }
+
+ ASSERT_TRUE(buf.atEnd(cur1));
+ ASSERT_TRUE(buf.atEnd(cur2));
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cur1));
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cur2));
+
+ // The read data and the original data must be equal
+ ASSERT_EQ(DATA, res1);
+ ASSERT_EQ(DATA, res2);
+
+ buf.deleteCursor(cur1);
+ buf.deleteCursor(cur2);
+}
+
+TEST(Buffer, streamTwoCursorsMovingInterleaved)
+{
+ VectorReadState state(DATA);
+
+ Buffer buf{readFromVector, &state};
+ Buffer::CursorId cur1 = buf.createCursor();
+ Buffer::CursorId cur2 = buf.createCursor();
+
+ char c;
+
+ std::vector<char> res1;
+ std::vector<char> res2;
+ while (!buf.atEnd(cur1) || !buf.atEnd(cur2)) {
+ for (int i = 0; i < 100; i++) {
+ if (buf.read(cur1, c)) {
+ res1.push_back(c);
+ }
+ }
+ for (int i = 0; i < 120; i++) {
+ if (buf.read(cur2, c)) {
+ res2.push_back(c);
+ }
+ }
+
+ // Move cur2 120 bytes backward and read the content again
+ res2.resize(res2.size() - 120);
+ ASSERT_EQ(-120, buf.moveCursor(cur2, -120));
+ for (int i = 0; i < 120; i++) {
+ if (buf.read(cur2, c)) {
+ res2.push_back(c);
+ }
+ }
+
+ // Move cur1 60 bytes forward and backward
+ buf.moveCursor(cur1, -buf.moveCursor(cur1, 60));
+
+ // Make sure the cursor position is correct
+ ASSERT_EQ(res1.size(), buf.offset(cur1));
+ ASSERT_EQ(res2.size(), buf.offset(cur2));
+ }
+
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cur1));
+ ASSERT_EQ(DATA_LENGTH, buf.offset(cur2));
+
+ // The read data and the original data must be equal
+ ASSERT_EQ(DATA, res1);
+ ASSERT_EQ(DATA, res2);
+
+ buf.deleteCursor(cur1);
+ buf.deleteCursor(cur2);
+}
+
+TEST(Buffer, streamMoveForward)
+{
+ VectorReadState state(DATA);
+
+ std::vector<char> partialData;
+ partialData.resize(100);
+ std::copy(DATA.end() - partialData.size(), DATA.end(), partialData.begin());
+
+ Buffer buf{readFromVector, &state};
+ Buffer::CursorId cursor = buf.createCursor();
+ ASSERT_EQ(ssize_t(DATA_LENGTH) - 100,
+ buf.moveCursor(cursor, DATA_LENGTH - 100));
+
+ char c;
+ std::vector<char> res;
+ while (buf.read(cursor, c)) {
+ res.push_back(c);
+ }
+ ASSERT_EQ(partialData, res);
+
+ buf.deleteCursor(cursor);
+}
+
+/* CharReader Test */
+
+TEST(CharReader, simpleRead)
+{
+ std::string testStr{"this is a test"};
+ char c;
+
+ // Feed a test string into the reader
+ CharReader reader{testStr};
+
+ // Try to read the test string
+ std::string res;
+ while (!reader.atEnd()) {
+ ASSERT_TRUE(reader.read(c));
+ res.append(&c, 1);
+ }
+
+ // The two strings must equal
+ ASSERT_EQ(testStr, res);
+
+ // We must now be at line 1, column 15
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(testStr.size() + 1, reader.getColumn());
+
+ // If we call either read or peek, false is returned
+ ASSERT_FALSE(reader.read(c));
+ ASSERT_FALSE(reader.peek(c));
+}
+
+TEST(CharReader, simplePeek)
+{
+ std::string testStr{"this is a test"};
+ char c;
+
+ // Feed a test string into the reader
+ CharReader reader{testStr};
+
+ // Try to read the test string
+ std::string res;
+ while (reader.peek(c)) {
+ res.append(&c, 1);
+ }
+
+ // Peeking does not trigger the "atEnd" flag
+ ASSERT_FALSE(reader.atEnd());
+
+ // The two strings must equal
+ ASSERT_EQ(testStr, res);
+
+ // We must now be at line 1, column 1 and NOT at the end of the stream
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+ ASSERT_FALSE(reader.atEnd());
+
+ // If we consume the peek, we must be at line 1, column 15 and we should be
+ // at the end of the stream
+ reader.consumePeek();
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(testStr.size() + 1, reader.getColumn());
+ ASSERT_TRUE(reader.atEnd());
+
+ // If we call either read or peek, false is returned
+ ASSERT_FALSE(reader.read(c));
+ ASSERT_FALSE(reader.peek(c));
+}
+
+TEST(CharReader, rowColumnCounter)
+{
+ // Feed a test string into the reader
+ CharReader reader{"1\n\r2\n3\r\n\n4"};
+
+ // We should currently be in line 1, column 1
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+
+ // Read two characters
+ char c;
+ for (int i = 0; i < 2; i++)
+ reader.read(c);
+ ASSERT_EQ(2U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+
+ // Read two characters
+ for (int i = 0; i < 2; i++)
+ reader.read(c);
+ ASSERT_EQ(3U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+
+ // Read three characters
+ for (int i = 0; i < 3; i++)
+ reader.read(c);
+ ASSERT_EQ(5U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+}
+
+TEST(CharReader, rowColumnCounterTest)
+{
+ // Feed a test string into the reader
+ CharReader reader{"1\n\r2\n3\r\n\n4", 4, 10};
+
+ // We should currently be in line 1, column 1
+ ASSERT_EQ(4U, reader.getLine());
+ ASSERT_EQ(10U, reader.getColumn());
+
+ // Read two characters
+ char c;
+ for (int i = 0; i < 2; i++)
+ reader.read(c);
+ ASSERT_EQ(5U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+
+ // Read two characters
+ for (int i = 0; i < 2; i++)
+ reader.read(c);
+ ASSERT_EQ(6U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+
+ // Read three characters
+ for (int i = 0; i < 3; i++)
+ reader.read(c);
+ ASSERT_EQ(8U, reader.getLine());
+ ASSERT_EQ(1U, reader.getColumn());
+}
+
+TEST(CharReader, linebreakSubstitution)
+{
+ // Feed a test string into the reader and read all characters back
+ CharReader reader{"this\n\ris\n\rjust\na test\r\n\rtest\n\r"};
+ std::string res;
+ char c;
+ while (reader.read(c)) {
+ res.append(&c, 1);
+ }
+
+ // Test for equality
+ ASSERT_EQ("this\nis\njust\na test\n\ntest\n", res);
+}
+
+TEST(CharReader, rowColumnCounterUTF8)
+{
+ // Feed a test string with some umlauts into the reader
+ CharReader reader{"\x61\xc3\x96\xc3\x84\xc3\x9c\xc3\x9f"};
+
+ // Read all bytes
+ char c;
+ while (reader.read(c)) {
+ // Do nothing
+ }
+
+ // The sequence above equals 5 UTF-8 characters (so after reading all the
+ // cursor is at position 6)
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(6U, reader.getColumn());
+}
+
+TEST(CharReader, stream)
+{
+ // Copy the test data to a string stream
+ std::stringstream ss;
+ std::copy(DATA.begin(), DATA.end(), std::ostream_iterator<char>(ss));
+
+ // Read the data back from the stream
+ std::vector<char> res;
+ char c;
+ CharReader reader{ss};
+ while (reader.read(c)) {
+ res.push_back(c);
+ }
+ ASSERT_EQ(DATA_LENGTH, res.size());
+ ASSERT_EQ(DATA, res);
+}
+
+TEST(CharReader, fork)
+{
+ std::string testStr{"first line\n\n\rsecond line\n\rlast line"};
+ // 0123456789 0 123456789012 3456789012
+ // 0 1 2 3
+
+ char c;
+ CharReader reader{testStr};
+
+ // Read a few characters
+ for (int i = 0; i < 4; i++)
+ reader.read(c);
+
+ // Peek a few characters
+ for (int i = 4; i < 7; i++)
+ reader.peek(c);
+
+ // Fork the reader
+ {
+ CharReaderFork fork = reader.fork();
+
+ ASSERT_EQ(1U, fork.getLine());
+ ASSERT_EQ(5U, fork.getColumn());
+
+ fork.peek(c);
+ ASSERT_EQ('i', c);
+
+ fork.read(c);
+ ASSERT_EQ('t', c);
+
+ ASSERT_EQ(1U, fork.getLine());
+ ASSERT_EQ(6U, fork.getColumn());
+
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(5U, reader.getColumn());
+
+ reader.read(c);
+ reader.read(c);
+ ASSERT_EQ(' ', c);
+
+ fork.commit();
+ }
+ ASSERT_EQ(1U, reader.getLine());
+ ASSERT_EQ(6U, reader.getColumn());
+}
+
+TEST(CharReaderTest, context)
+{
+ std::string testStr{"first line\n\n\rsecond line\n\rlast line"};
+ // 0123456789 0 123456789012 3456789012
+ // 0 1 2 3
+
+ // Retrieval at beginning of stream
+ {
+ CharReader reader{testStr};
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("first line", ctx.line);
+ ASSERT_EQ(0U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Retrieval in middle of line
+ {
+ CharReader reader{testStr};
+ CharReader::Context ctx = reader.getContext(80);
+
+ char c;
+ for (int i = 0; i < 5; i++)
+ reader.read(c);
+
+ ASSERT_EQ("first line", ctx.line);
+ ASSERT_EQ(0U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Retrieval in whitespace sequence
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 11; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("first line", ctx.line);
+ ASSERT_EQ(10U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Truncation of text
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 5; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(3);
+ ASSERT_EQ("t l", ctx.line);
+ ASSERT_EQ(1U, ctx.relPos);
+ ASSERT_TRUE(ctx.truncatedStart);
+ ASSERT_TRUE(ctx.truncatedEnd);
+ }
+
+ // Second line
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 12; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("second line", ctx.line);
+ ASSERT_EQ(0U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // End of second line
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 23; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("second line", ctx.line);
+ ASSERT_EQ(11U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Last line
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 24; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("last line", ctx.line);
+ ASSERT_EQ(0U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Middle of last line
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 28; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("last line", ctx.line);
+ ASSERT_EQ(4U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // Middle of last line truncated
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 28; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(3);
+ ASSERT_EQ("t l", ctx.line);
+ ASSERT_EQ(1U, ctx.relPos);
+ ASSERT_TRUE(ctx.truncatedStart);
+ ASSERT_TRUE(ctx.truncatedEnd);
+ }
+
+ // End of stream
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 100; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(80);
+ ASSERT_EQ("last line", ctx.line);
+ ASSERT_EQ(9U, ctx.relPos);
+ ASSERT_FALSE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+
+ // End of stream truncated
+ {
+ CharReader reader{testStr};
+
+ char c;
+ for (int i = 0; i < 100; i++)
+ reader.read(c);
+
+ CharReader::Context ctx = reader.getContext(4);
+ ASSERT_EQ("line", ctx.line);
+ ASSERT_EQ(4U, ctx.relPos);
+ ASSERT_TRUE(ctx.truncatedStart);
+ ASSERT_FALSE(ctx.truncatedEnd);
+ }
+}
+}
+
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