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/++
A module containing custom exceptions for display convenience
Copyright: © 2017 Szabo Bogdan
License: Subject to the terms of the MIT license, as written in the included LICENSE.txt file.
Authors: Szabo Bogdan
+/
module trial.stackresult;
import std.conv;
import std.regex;
import std.exception;
import std.stdio;
import std.string;
import std.algorithm;
import core.demangle;
version (Have_fluent_asserts) { } else {
auto toTestException(Throwable t)
{
return t;
}
}
version (Have_fluent_asserts) {
import fluentasserts.core.base;
import fluentasserts.core.results;
///
class TestExceptionWrapper : TestException {
private {
TestException exception;
IResult[] results;
}
///
this(TestException exception, IResult[] results, string fileName, size_t line, Throwable next = null) {
this.exception = exception;
this.results = results;
super(results, fileName, line, next);
this.msg = exception.msg ~ "\n" ~ this.msg;
}
///
override void print(ResultPrinter printer) {
exception.print(printer);
results.each!(a => a.print(printer));
}
///
override string toString() {
return exception.toString ~ results.map!(a => a.toString).join("\n").to!string;
}
}
/// The message of a wrapped exception should contain the original exception
unittest {
auto exception = new TestException([ new MessageResult("first message") ], "", 0);
auto wrappedException = new TestExceptionWrapper(exception, [ new MessageResult("second message") ], "", 0);
wrappedException.msg.should.equal("first message\n\nsecond message\n");
}
/// Converts a Throwable to a TestException which improves the failure verbosity
TestException toTestException(Throwable t)
{
auto exception = cast(TestException) t;
if (exception is null)
{
IResult[] results = [cast(IResult) new MessageResult(t.classinfo.name ~ ": " ~ t.msg)];
if (t.file.indexOf("../") == -1)
{
results ~= cast(IResult) new SourceResult(t.file, t.line);
}
if (t !is null && t.info !is null)
{
results ~= cast(IResult) new StackResult(t.info);
}
exception = new TestException(results, t.file, t.line, t);
} else {
exception = new TestExceptionWrapper(exception, [ cast(IResult) new StackResult(t.info) ], t.file, t.line, t);
}
return exception;
}
@("toTestException should convert an Exception from the current project to a TestException with 2 reporters")
unittest
{
auto exception = new Exception("random text");
auto testException = exception.toTestException;
(testException !is null).should.equal(true);
testException.toString.should.contain("random text");
testException.toString.should.contain("lifecycle/trial/runner.d");
}
@("toTestException should convert an Exception from other project to a TestException with 1 reporter")
unittest
{
auto exception = new Exception("random text", "../file.d");
auto testException = exception.toTestException;
(testException !is null).should.equal(true);
testException.toString.should.contain("random text");
testException.toString.should.not.contain("lifecycle/trial/runner.d");
}
/// A structure that allows you to detect which modules are relevant to display
struct ExternalValidator
{
/// The list of external modules like the standard library or dub dependencies
string[] externalModules;
/// Check if the provided name comes from an external dependency
bool isExternal(const string name) @safe
{
auto reversed = name.dup;
reverse(reversed);
string substring = name;
int sum = 0;
int index = 0;
foreach (ch; reversed)
{
if (ch == ')')
{
sum++;
}
if (ch == '(')
{
sum--;
}
if (sum == 0)
{
break;
}
index++;
}
auto tmpSubstring = reversed[index .. $];
reverse(tmpSubstring);
substring = tmpSubstring.to!string;
auto wordEnd = substring.lastIndexOf(' ') + 1;
auto chainEnd = substring.lastIndexOf(").") + 1;
if (chainEnd > wordEnd)
{
return isExternal(name[0 .. chainEnd]);
}
auto functionName = substring[wordEnd .. $];
return !externalModules.filter!(a => functionName.indexOf(a) == 0).empty;
}
}
@("It should detect external functions")
unittest
{
auto validator = ExternalValidator(["selenium.api", "selenium.session"]);
validator.isExternal("selenium.api.SeleniumApiConnector selenium.api.SeleniumApiConnector.__ctor()")
.should.equal(true);
validator.isExternal("void selenium.api.SeleniumApiConnector.__ctor()").should.equal(true);
validator.isExternal(
"pure @safe bool selenium.api.enforce!(Exception, bool).enforce(bool, lazy const(char)[], immutable(char)[], ulong)")
.should.equal(true);
validator.isExternal("immutable(immutable(selenium.session.SeleniumSession) function(immutable(char)[], selenium.api.Capabilities, selenium.api.Capabilities, selenium.api.Capabilities)) selenium.session.SeleniumSession.__ctor")
.should.equal(true);
}
/// Used to display the stack
class StackResult : IResult
{
static
{
///
string[] externalModules;
}
///
Frame[] frames;
///
this(Throwable.TraceInfo t)
{
foreach (line; t)
{
auto frame = line.to!string.toFrame;
frame.name = demangle(frame.name).to!string;
frames ~= frame;
}
}
private
{
auto getFrames()
{
return frames.until!(a => a.name.indexOf("generated") != -1)
.until!(a => a.name.indexOf("D5trial") != -1);
}
}
override
{
/// Converts the result to a string
string toString() @safe
{
string result = "Stack trace:\n-------------------\n...\n";
foreach (frame; getFrames)
{
result ~= frame.toString ~ "\n";
}
return result ~ "...";
}
/// Prints the stack using the default writer
void print(ResultPrinter printer)
{
int colorIndex = 0;
printer.primary("Stack trace:\n-------------------\n...\n");
auto validator = ExternalValidator(externalModules);
foreach (frame; getFrames)
{
if (validator.isExternal(frame.name))
{
printer.primary(frame.toString);
}
else
{
frame.print(printer);
}
printer.primary("\n");
}
printer.primary("...");
}
}
}
/// The stack result should display the stack in a readable form
unittest
{
Throwable exception;
try
{
assert(false, "random message");
}
catch (Throwable t)
{
exception = t;
}
auto result = new StackResult(exception.info).toString;
result.should.startWith("Stack trace:\n-------------------\n...");
result.should.endWith("\n...");
}
} else {
/// Used to display the stack
class StackResult
{
static
{
///
string[] externalModules;
}
///
Frame[] frames;
///
this(Throwable.TraceInfo t) {
foreach (line; t)
{
auto frame = line.to!string.toFrame;
frame.name = demangle(frame.name).to!string;
frames ~= frame;
}
}
private
{
auto getFrames()
{
return frames.until!(a => a.name.indexOf("generated") != -1)
.until!(a => a.name.indexOf("D5trial") != -1);
}
}
override
{
/// Converts the result to a string
string toString() @safe
{
string result = "Stack trace:\n-------------------\n...\n";
foreach (frame; getFrames)
{
result ~= frame.toString ~ "\n";
}
return result ~ "...";
}
}
}
}
/// Represents a stack frame
struct Frame
{
///
int index = -1;
///
string moduleName;
///
string address;
///
string name;
///
string offset;
///
string file;
///
int line = -1;
///
bool invalid = true;
///
string raw;
string toString() const @safe {
if(raw != "") {
return raw;
}
string result;
if(index >= 0) {
result ~= leftJustifier(index.to!string, 4).to!string;
}
result ~= address ~ " ";
result ~= name == "" ? "????" : name;
if(moduleName != "") {
result ~= " at " ~ moduleName;
}
if(offset != "") {
result ~= " + " ~ offset;
}
if(file != "") {
result ~= " (" ~ file;
if(line > 0) {
result ~= ":" ~ line.to!string;
}
result ~= ")";
}
return result;
}
version(Have_fluent_asserts) {
void print(ResultPrinter printer) @safe
{
if(raw != "") {
printer.primary(raw);
return;
}
if(index >= 0) {
printer.info(leftJustifier(index.to!string, 4).to!string);
}
printer.primary(address ~ " ");
printer.info(name == "" ? "????" : name);
if(moduleName != "") {
printer.primary(" at ");
printer.info(moduleName);
}
if(offset != "") {
printer.primary(" + ");
printer.info(offset);
}
if(file != "") {
printer.primary(" (");
printer.info(file);
if(line > 0) {
printer.primary(":");
printer.info(line.to!string);
}
printer.primary(")");
}
}
}
}
/// The frame should convert a frame to string
unittest
{
Frame(10, "some.module", "0xffffff", "name", "offset", "file.d", 120).toString.should.equal(
`10 0xffffff name at some.module + offset (file.d:120)`
);
}
/// The frame should not output an index < 0 or a line < 0
unittest
{
Frame(-1, "some.module", "0xffffff", "name", "offset", "file.d", -1).toString.should.equal(
`0xffffff name at some.module + offset (file.d)`
);
}
/// The frame should not output the file if it is missing from the stack
unittest
{
Frame(-1, "some.module", "0xffffff", "name", "offset", "", 10).toString.should.equal(
`0xffffff name at some.module + offset`
);
}
/// The frame should not output the module if it is missing from the stack
unittest
{
Frame(-1, "", "0xffffff", "name", "offset", "", 10).toString.should.equal(
`0xffffff name + offset`
);
}
/// The frame should not output the offset if it is missing from the stack
unittest
{
Frame(-1, "", "0xffffff", "name", "", "", 10).toString.should.equal(
`0xffffff name`
);
}
/// The frame should display `????` when the name is missing
unittest
{
Frame(-1, "", "0xffffff", "", "", "", 10).toString.should.equal(
`0xffffff ????`
);
}
version(unittest) {
version(Have_fluent_asserts):
class MockPrinter : ResultPrinter {
string buffer;
void primary(string val) {
buffer ~= val;
}
void info(string val) {
buffer ~= "[info:" ~ val ~ "]";
}
void danger(string val) {
buffer ~= "[danger:" ~ val ~ "]";
}
void success(string val) {
buffer ~= "[success:" ~ val ~ "]";
}
void dangerReverse(string val) {
buffer ~= "[dangerReverse:" ~ val ~ "]";
}
void successReverse(string val) {
buffer ~= "[successReverse:" ~ val ~ "]";
}
}
}
/// The frame should print all fields
unittest
{
auto printer = new MockPrinter;
Frame(10, "some.module", "0xffffff", "name", "offset", "file.d", 120).print(printer);
printer.buffer.should.equal(
`[info:10 ]0xffffff [info:name] at [info:some.module] + [info:offset] ([info:file.d]:[info:120])`
);
}
/// The frame should not print an index < 0 or a line < 0
unittest
{
auto printer = new MockPrinter;
Frame(-1, "some.module", "0xffffff", "name", "offset", "file.d", -1).print(printer);
printer.buffer.should.equal(
`0xffffff [info:name] at [info:some.module] + [info:offset] ([info:file.d])`
);
}
/// The frame should not print the file if it's missing
unittest
{
auto printer = new MockPrinter;
Frame(-1, "some.module", "0xffffff", "name", "offset", "", 10).print(printer);
printer.buffer.should.equal(
`0xffffff [info:name] at [info:some.module] + [info:offset]`
);
}
/// The frame should not print the module if it's missing
unittest
{
auto printer = new MockPrinter;
Frame(-1, "", "0xffffff", "name", "offset", "", 10).print(printer);
printer.buffer.should.equal(
`0xffffff [info:name] + [info:offset]`
);
}
/// The frame should not print the offset if it's missing
unittest
{
auto printer = new MockPrinter;
Frame(-1, "", "0xffffff", "name", "", "", 10).print(printer);
printer.buffer.should.equal(
`0xffffff [info:name]`
);
}
/// The frame should print ???? when the name is missing
unittest
{
auto printer = new MockPrinter;
Frame(-1, "", "0xffffff", "", "", "", 10).print(printer);
printer.buffer.should.equal(
`0xffffff [info:????]`
);
}
immutable static
{
string index = `(?P<index>[0-9]+)`;
string moduleName = `(?P<module>\S+)`;
string address = `(?P<address>0x[0-9a-fA-F]+)`;
string name = `(?P<name>.+)`;
string offset = `(?P<offset>(0x[0-9A-Za-z]+)|([0-9]+))`;
string file = `(?P<file>.+)`;
string linePattern = `(?P<line>[0-9]+)`;
}
/// Parse a MacOS string frame
Frame toDarwinFrame(string line)
{
Frame frame;
auto darwinPattern = index ~ `(\s+)` ~ moduleName ~ `(\s+)` ~ address ~ `(\s+)`
~ name ~ `\s\+\s` ~ offset;
auto matched = matchFirst(line, darwinPattern);
if(matched.length < 5) {
return frame;
}
frame.invalid = false;
frame.index = matched["index"].to!int;
frame.moduleName = matched["module"];
frame.address = matched["address"];
frame.name = matched["name"];
frame.offset = matched["offset"];
return frame;
}
/// Parse a Windows string frame
Frame toWindows1Frame(string line)
{
Frame frame;
auto matched = matchFirst(line,
address ~ `(\s+)in(\s+)` ~ name ~ `(\s+)at(\s+)` ~ file ~ `\(` ~ linePattern ~ `\)`); // ~ );
if(matched.length < 4) {
return frame;
}
frame.address = matched["address"];
frame.name = matched["name"];
frame.file = matched["file"];
frame.line = matched["line"].to!int;
frame.invalid = frame.address == "" || frame.name == "" || frame.file == "";
return frame;
}
/// ditto
Frame toWindows2Frame(string line)
{
Frame frame;
auto matched = matchFirst(line, address ~ `(\s+)in(\s+)` ~ name);
if(matched.length < 2) {
return frame;
}
frame.address = matched["address"];
frame.name = matched["name"];
frame.invalid = frame.address == "" || frame.name == "";
return frame;
}
/// Parse a GLibC string frame
Frame toGLibCFrame(string line)
{
Frame frame;
auto matched = matchFirst(line, moduleName ~ `\(` ~ name ~ `\)\s+\[` ~ address ~ `\]`);
if(matched.length < 3) {
return frame;
}
frame.address = matched["address"];
frame.name = matched["name"];
frame.moduleName = matched["module"];
auto plusSign = frame.name.indexOf("+");
if (plusSign != -1)
{
frame.offset = frame.name[plusSign + 1 .. $];
frame.name = frame.name[0 .. plusSign];
}
frame.invalid = frame.address == "" || frame.name == "" || frame.moduleName == "" ||
frame.name.indexOf("(") >= 0;
return frame;
}
/// Parse a NetBsd string frame
Frame toNetBsdFrame(string line)
{
Frame frame;
auto matched = matchFirst(line, address ~ `\s+<` ~ name ~ `\+` ~ offset ~ `>\s+at\s+` ~ moduleName);
if(matched.length < 4) {
return frame;
}
frame.address = matched["address"];
frame.name = matched["name"];
frame.moduleName = matched["module"];
frame.offset = matched["offset"];
frame.invalid = frame.address == "" || frame.name == "" || frame.moduleName == "" || frame.offset == "";
return frame;
}
/// Parse a Linux frame
Frame toLinuxFrame(string line) {
Frame frame;
auto matched = matchFirst(line, file ~ `:` ~ linePattern ~ `\s+` ~ name ~ `\s+\[` ~ address ~ `\]`);
if(matched.length < 4) {
return frame;
}
frame.file = matched["file"];
frame.name = matched["name"];
frame.address = matched["address"];
frame.line = matched["line"].to!int;
frame.invalid = frame.address == "" || frame.name == "" || frame.file == "" || frame.line == 0;
return frame;
}
/// Parse a Linux frame
Frame toMissingInfoLinuxFrame(string line) {
Frame frame;
auto matched = matchFirst(line, `\?\?:\?\s+` ~ name ~ `\s+\[` ~ address ~ `\]`);
if(matched.length < 2) {
return frame;
}
frame.name = matched["name"];
frame.address = matched["address"];
frame.invalid = frame.address == "" || frame.name == "";
return frame;
}
/// Converts a stack trace line to a Frame structure
Frame toFrame(string line)
{
Frame frame;
frame.raw = line;
frame.invalid = false;
auto frames = [
line.toDarwinFrame,
line.toWindows1Frame,
line.toWindows2Frame,
line.toLinuxFrame,
line.toGLibCFrame,
line.toNetBsdFrame,
line.toMissingInfoLinuxFrame,
frame
];
return frames.filter!(a => !a.invalid).front;
}
@("Get frame info from Darwin platform format")
unittest {
auto line = "1 ???fluent-asserts 0x00abcdef000000 D6module4funcAFZv + 0";
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.index.should.equal(1);
frame.moduleName.should.equal("???fluent-asserts");
frame.address.should.equal("0x00abcdef000000");
frame.name.should.equal("D6module4funcAFZv");
frame.offset.should.equal("0");
}
@("Get frame info from windows platform format without path")
unittest
{
auto line = "0x779CAB5A in RtlInitializeExceptionChain";
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.index.should.equal(-1);
frame.moduleName.should.equal("");
frame.address.should.equal("0x779CAB5A");
frame.name.should.equal("RtlInitializeExceptionChain");
frame.offset.should.equal("");
}
@("Get frame info from windows platform format with path")
unittest
{
auto line = `0x00402669 in void app.__unitestL82_8() at D:\tidynumbers\source\app.d(84)`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.index.should.equal(-1);
frame.moduleName.should.equal("");
frame.address.should.equal("0x00402669");
frame.name.should.equal("void app.__unitestL82_8()");
frame.file.should.equal(`D:\tidynumbers\source\app.d`);
frame.line.should.equal(84);
frame.offset.should.equal("");
}
@("Get frame info from CRuntime_Glibc format without offset")
unittest {
auto line = `module(_D6module4funcAFZv) [0x00000000]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("module");
frame.name.should.equal("_D6module4funcAFZv");
frame.address.should.equal("0x00000000");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
@("Get frame info from CRuntime_Glibc format with offset")
unittest {
auto line = `module(_D6module4funcAFZv+0x78) [0x00000000]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("module");
frame.name.should.equal("_D6module4funcAFZv");
frame.address.should.equal("0x00000000");
frame.index.should.equal(-1);
frame.offset.should.equal("0x78");
}
@("Get frame info from NetBSD format")
unittest
{
auto line = `0x00000000 <_D6module4funcAFZv+0x78> at module`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("module");
frame.name.should.equal("_D6module4funcAFZv");
frame.address.should.equal("0x00000000");
frame.index.should.equal(-1);
frame.offset.should.equal("0x78");
}
/// Get the main frame info from linux format
unittest {
auto line = `generated.d:45 _Dmain [0x8e80c4]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("generated.d");
frame.line.should.equal(45);
frame.name.should.equal("_Dmain");
frame.address.should.equal("0x8e80c4");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
/// Get a function frame info from linux format
unittest {
auto line = `lifecycle/trial/runner.d:106 trial.interfaces.SuiteResult[] trial.runner.runTests(const(trial.interfaces.TestCase)[], immutable(char)[]) [0x8b0ec1]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("lifecycle/trial/runner.d");
frame.line.should.equal(106);
frame.name.should.equal("trial.interfaces.SuiteResult[] trial.runner.runTests(const(trial.interfaces.TestCase)[], immutable(char)[])");
frame.address.should.equal("0x8b0ec1");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
/// Get an external function frame info from linux format
unittest {
auto line = `../../.dub/packages/fluent-asserts-0.6.6/fluent-asserts/core/fluentasserts/core/base.d:39 void fluentasserts.core.base.Result.perform() [0x8f4b47]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("../../.dub/packages/fluent-asserts-0.6.6/fluent-asserts/core/fluentasserts/core/base.d");
frame.line.should.equal(39);
frame.name.should.equal("void fluentasserts.core.base.Result.perform()");
frame.address.should.equal("0x8f4b47");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
/// Get an external function frame info from linux format
unittest {
auto line = `lifecycle/trial/discovery/unit.d:268 _D5trial9discovery4unit17UnitTestDiscovery231__T12addTestCasesVAyaa62_2f686f6d652f626f737a2f776f726b73706163652f64746573742f6c6966656379636c652f747269616c2f6578656375746f722f706172616c6c656c2e64VAyaa23_747269616c2e6578656375746f722e706172616c6c656cS245trial8executor8parallelZ12addTestCasesMFZ9__lambda4FZv [0x872000]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("lifecycle/trial/discovery/unit.d");
frame.line.should.equal(268);
frame.name.should.equal("_D5trial9discovery4unit17UnitTestDiscovery231__T12addTestCasesVAyaa62_2f686f6d652f626f737a2f776f726b73706163652f64746573742f6c6966656379636c652f747269616c2f6578656375746f722f706172616c6c656c2e64VAyaa23_747269616c2e6578656375746f722e706172616c6c656cS245trial8executor8parallelZ12addTestCasesMFZ9__lambda4FZv");
frame.address.should.equal("0x872000");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
/// Get an internal function frame info from linux format
unittest {
auto line = `../../../../../fluent-asserts/source/fluentasserts/core/operations/arrayEqual.d:26 nothrow @safe fluentasserts.core.results.IResult[] fluentasserts.core.operations.arrayEqual.arrayEqual(ref fluentasserts.core.evaluation.Evaluation) [0x27a57ce]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("../../../../../fluent-asserts/source/fluentasserts/core/operations/arrayEqual.d");
frame.line.should.equal(26);
frame.name.should.equal("nothrow @safe fluentasserts.core.results.IResult[] fluentasserts.core.operations.arrayEqual.arrayEqual(ref fluentasserts.core.evaluation.Evaluation)");
frame.address.should.equal("0x27a57ce");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}
/// Get an missing info function frame info from linux format
unittest {
auto line = `??:? __libc_start_main [0x174bbf44]`;
auto frame = line.toFrame;
frame.invalid.should.equal(false);
frame.moduleName.should.equal("");
frame.file.should.equal("");
frame.line.should.equal(-1);
frame.name.should.equal("__libc_start_main");
frame.address.should.equal("0x174bbf44");
frame.index.should.equal(-1);
frame.offset.should.equal("");
}