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// Copyright Ferdinand Majerech 2011.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
module dyaml.test.suitehelpers;
import dyaml;
import dyaml.emitter;
import dyaml.event;
import dyaml.parser;
import dyaml.reader;
import dyaml.scanner;
import dyaml.token;
import dyaml.test.constructor;
import std.algorithm;
import std.array;
import std.conv;
import std.exception;
import std.file;
import std.range;
import std.string;
package version(unittest):
// Like other types, wchar and dchar use the system's endianness, so \uFEFF
// will always be the 'correct' BOM and '\uFFFE' will always be the 'wrong' one
enum wchar[] bom16 = ['\uFEFF', '\uFFFE'];
enum dchar[] bom32 = ['\uFEFF', '\uFFFE'];
Parser parseData(string data, string name = "TEST") @safe
{
auto reader = Reader(cast(ubyte[])data.dup, name);
auto scanner = Scanner(reader);
return new Parser(scanner);
}
/**
Test scanner by scanning a document, expecting no errors.
Params:
name = Name of the document being scanned
data = Data to scan.
*/
void testScanner(string name, string data) @safe
{
ubyte[] yamlData = cast(ubyte[])data.dup;
string[] tokens;
foreach (token; Scanner(Reader(yamlData, name)))
{
tokens ~= token.id.text;
}
}
/**
Implicit tag resolution unittest.
Params:
name = Name of the document being tested
data = Document to compare
detectData = The tag that each scalar should resolve to
*/
bool testImplicitResolver(string name, string data, string detectData, out string generatedTags, out string expectedTags) @safe
{
const correctTag = detectData.strip();
const node = Loader.fromString(data, name).load();
if (node.nodeID != NodeID.sequence)
{
return false;
}
bool success = true;
foreach (const Node scalar; node)
{
generatedTags ~= scalar.tag ~ "\n";
expectedTags ~= correctTag ~ "\n";
if ((scalar.nodeID != NodeID.scalar) || (scalar.tag != correctTag))
{
success = false;
}
}
return success;
}
// Try to emit an event range.
Event[] emitTestCommon(string name, Event[] events, bool canonical) @safe
{
auto emitStream = new Appender!string();
auto emitter = Emitter!(typeof(emitStream), char)(emitStream, canonical, 2, 80, LineBreak.unix);
foreach (event; events)
{
emitter.emit(event);
}
return parseData(emitStream.data, name).array;
}
/**
Test emitter by checking if events remain equal after round-tripping, with and
without canonical output enabled.
Params:
name = Name of the document being tested
events = Events to test
results = Events that were produced by round-tripping
*/
bool testEmitter(string name, Event[] events, out Event[][2] results) @safe
{
bool matching = true;
foreach (idx, canonicalOutput; [false, true])
{
results[idx] = emitTestCommon(name, events, canonicalOutput);
if (!equal!eventCompare(events, results[idx]))
{
matching = false;
}
}
return matching;
}
/**
Test emitter by checking if events remain equal after round-tripping, with all
combinations of styles.
Params:
name = Name of the document being tested
events = Events to test
results = Events that were produced by round-tripping
*/
bool testEmitterStyles(string name, Event[] events, out Event[][2 * 2 * 5] results) @safe
{
size_t idx;
foreach (styles; cartesianProduct(
[CollectionStyle.block, CollectionStyle.flow],
[ScalarStyle.literal, ScalarStyle.folded,
ScalarStyle.doubleQuoted, ScalarStyle.singleQuoted,
ScalarStyle.plain],
[false, true]))
{
const collectionStyle = styles[0];
const scalarStyle = styles[1];
const canonical = styles[2];
Event[] styledEvents;
foreach (event; events)
{
if (event.id == EventID.scalar)
{
event = scalarEvent(Mark(), Mark(), event.anchor, event.tag,
event.implicit,
event.value, scalarStyle);
}
else if (event.id == EventID.sequenceStart)
{
event = sequenceStartEvent(Mark(), Mark(), event.anchor,
event.tag, event.implicit, collectionStyle);
}
else if (event.id == EventID.mappingStart)
{
event = mappingStartEvent(Mark(), Mark(), event.anchor,
event.tag, event.implicit, collectionStyle);
}
styledEvents ~= event;
}
auto newEvents = emitTestCommon(name, styledEvents, canonical);
results[idx++] = newEvents;
if (!equal!eventCompare(events, newEvents))
{
return false;
}
}
return true;
}
/**
Constructor unittest.
Params:
data = The document being tested
base = A unique id corresponding to one of the premade sequences in dyaml.test.constructor
*/
bool testConstructor(string data, string base) @safe
{
assert((base in expected) !is null, "Unimplemented constructor test: " ~ base);
auto loader = Loader.fromString(data);
Node[] exp = expected[base];
//Compare with expected results document by document.
return equal(loader, exp);
}
bool eventCompare(const Event a, const Event b) @safe pure
{
//Different event types.
if (a.id != b.id)
{
return false;
}
//Different anchor (if applicable).
if (a.id.among!(EventID.sequenceStart, EventID.mappingStart, EventID.alias_, EventID.scalar)
&& a.anchor != b.anchor)
{
return false;
}
//Different collection tag (if applicable).
if (a.id.among!(EventID.sequenceStart, EventID.mappingStart) && a.tag != b.tag)
{
return false;
}
if (a.id == EventID.scalar)
{
//Different scalar tag (if applicable).
if (!(a.implicit || b.implicit) && a.tag != b.tag)
{
return false;
}
//Different scalar value.
if (a.value != b.value)
{
return false;
}
}
return true;
}
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