Change directory structure of read tests

1 files changed, 178 insertions, 0 deletions

diff --git a/test/read_test.cpp b/test/read_test.cpp
new file mode 100644
index 0000000000..85970fc069
--- /dev/null
+++ b/test/read_test.cpp
@@ -0,0 +1,178 @@
+/*
+ * libnbt++ - A library for the Minecraft Named Binary Tag format.
+ * Copyright (C) 2013, 2015  ljfa-ag
+ *
+ * This file is part of libnbt++.
+ *
+ * libnbt++ is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libnbt++ 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libnbt++.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "microtest.h"
+#include "io/stream_reader.h"
+#include "nbt_tags.h"
+#include <fstream>
+#include <sstream>
+
+using namespace nbt;
+
+void test_stream_reader_big()
+{
+    const char input[] {
+        1, //tag_type::Byte
+        0, //tag_type::End
+        11, //tag_type::Int_Array
+
+        0x0a, 0x0b, 0x0c, 0x0d, //0x0a0b0c0d in Big Endian
+
+        0x00, 0x06, //String length in Big Endian
+        'f', 'o', 'o', 'b', 'a', 'r',
+
+        0 //tag_type::End (invalid with allow_end = false)
+    };
+    std::istringstream is(std::string(input, sizeof input));
+    nbt::io::stream_reader reader(is);
+
+    ASSERT(&reader.get_istr() == &is);
+    ASSERT(reader.get_endian() == endian::big);
+
+    ASSERT(reader.read_type() == tag_type::Byte);
+    ASSERT(reader.read_type(true) == tag_type::End);
+    ASSERT(reader.read_type(false) == tag_type::Int_Array);
+
+    int32_t i;
+    reader.read_num(i);
+    ASSERT(i == 0x0a0b0c0d);
+
+    ASSERT(reader.read_string() == "foobar");
+
+    EXPECT_EXCEPTION(reader.read_type(false), io::input_error);
+    ASSERT(!is);
+    is.clear();
+
+    //Test for invalid tag type 12
+    is.str("\x0c");
+    EXPECT_EXCEPTION(reader.read_type(), io::input_error);
+    ASSERT(!is);
+    is.clear();
+
+    //Test for unexpcted EOF on numbers (input too short for int32_t)
+    is.str("\x03\x04");
+    reader.read_num(i);
+    ASSERT(!is);
+}
+
+void test_stream_reader_little()
+{
+    const char input[] {
+        0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, //0x0d0c0b0a09080706 in Little Endian
+
+        0x06, 0x00, //String length in Little Endian
+        'f', 'o', 'o', 'b', 'a', 'r',
+
+        0x10, 0x00, //String length (intentionally too large)
+        'a', 'b', 'c', 'd' //unexpected EOF
+    };
+    std::istringstream is(std::string(input, sizeof input));
+    nbt::io::stream_reader reader(is, endian::little);
+
+    ASSERT(reader.get_endian() == endian::little);
+
+    int64_t i;
+    reader.read_num(i);
+    ASSERT(i == 0x0d0c0b0a09080706);
+
+    ASSERT(reader.read_string() == "foobar");
+
+    EXPECT_EXCEPTION(reader.read_string(), io::input_error);
+    ASSERT(!is);
+}
+
+void test_read_bigtest()
+{
+    //Uses an extended variant of Notch's original bigtest file
+    std::ifstream file("bigtest_uncompr", std::ios::binary);
+    ASSERT(file);
+    nbt::io::stream_reader reader(file);
+
+    auto pair = reader.read_tag();
+    ASSERT(pair.first == "Level");
+
+    ASSERT(pair.second->get_type() == tag_type::Compound);
+    const tag_compound& comp = pair.second->as<tag_compound>();
+
+    ASSERT(comp.size() == 13);
+
+    ASSERT(comp.at("byteTest") == tag_byte(127));
+    ASSERT(comp.at("shortTest") == tag_short(32767));
+    ASSERT(comp.at("intTest") == tag_int(2147483647));
+    ASSERT(comp.at("longTest") == tag_long(9223372036854775807));
+    ASSERT(comp.at("floatTest") == tag_float(std::stof("0xff1832p-25"))); //0.4982315
+    ASSERT(comp.at("doubleTest") == tag_double(std::stod("0x1f8f6bbbff6a5ep-54"))); //0.493128713218231
+
+    //From bigtest.nbt: "the first 1000 values of (n*n*255+n*7)%100, starting with n=0 (0, 62, 34, 16, 8, ...)"
+    tag_byte_array byteArrayTest;
+    for(int n = 0; n < 1000; ++n)
+        byteArrayTest.push_back((n*n*255 + n*7) % 100);
+    ASSERT(comp.at("byteArrayTest (the first 1000 values of (n*n*255+n*7)%100, starting with n=0 (0, 62, 34, 16, 8, ...))") == byteArrayTest);
+
+    ASSERT(comp.at("stringTest") == tag_string("HELLO WORLD THIS IS A TEST STRING \u00C5\u00C4\u00D6!"));
+
+    ASSERT(comp.at("listTest (compound)") == tag_list::of<tag_compound>({
+        {{"created-on", tag_long(1264099775885)}, {"name", "Compound tag #0"}},
+        {{"created-on", tag_long(1264099775885)}, {"name", "Compound tag #1"}}
+    }));
+    ASSERT(comp.at("listTest (long)") == tag_list::of<tag_long>({11, 12, 13, 14, 15}));
+    ASSERT(comp.at("listTest (end)") == tag_list());
+
+    ASSERT((comp.at("nested compound test") == tag_compound{
+        {"egg", tag_compound{{"value", 0.5f},  {"name", "Eggbert"}}},
+        {"ham", tag_compound{{"value", 0.75f}, {"name", "Hampus"}}}
+    }));
+
+    ASSERT(comp.at("intArrayTest") == tag_int_array(
+        {0x00010203, 0x04050607, 0x08090a0b, 0x0c0d0e0f}));
+}
+
+void test_read_errors()
+{
+    std::ifstream file;
+    nbt::io::stream_reader reader(file);
+
+    //EOF within a tag_double payload
+    file.open("errortest_eof1", std::ios::binary);
+    ASSERT(file);
+    EXPECT_EXCEPTION(reader.read_tag(), io::input_error);
+    ASSERT(!file);
+
+    //EOF within a key in a compound
+    file.close();
+    file.open("errortest_eof2", std::ios::binary);
+    ASSERT(file);
+    EXPECT_EXCEPTION(reader.read_tag(), io::input_error);
+    ASSERT(!file);
+
+    //Missing tag_end
+    file.close();
+    file.open("errortest_noend", std::ios::binary);
+    ASSERT(file);
+    EXPECT_EXCEPTION(reader.read_tag(), io::input_error);
+    ASSERT(!file);
+}
+
+int main()
+{
+    test_stream_reader_big();
+    test_stream_reader_little();
+    test_read_bigtest();
+    test_read_errors();
+}