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module fluentasserts.core.base;
public import fluentasserts.core.array;
public import fluentasserts.core.string;
public import fluentasserts.core.objects;
public import fluentasserts.core.basetype;
public import fluentasserts.core.callable;
public import fluentasserts.core.results;
public import fluentasserts.core.lifecycle;
public import fluentasserts.core.expect;
public import fluentasserts.core.evaluation;
import std.traits;
import std.stdio;
import std.algorithm;
import std.array;
import std.range;
import std.conv;
import std.string;
import std.file;
import std.datetime;
import std.range.primitives;
import std.typecons;
@safe:
struct Result {
bool willThrow;
IResult[] results;
MessageResult message;
string file;
size_t line;
private string reason;
auto because(string reason) {
this.reason = "Because " ~ reason ~ ", ";
return this;
}
void perform() {
if(!willThrow) {
return;
}
version(DisableMessageResult) {
IResult[] localResults = this.results;
} else {
IResult[] localResults = message ~ this.results;
}
version(DisableSourceResult) {} else {
auto sourceResult = new SourceResult(file, line);
message.prependValue(sourceResult.getValue);
message.prependText(reason);
localResults ~= sourceResult;
}
throw new TestException(localResults, file, line);
}
~this() {
this.perform;
}
static Result success() {
return Result(false);
}
}
struct Message {
bool isValue;
string text;
}
mixin template DisabledShouldThrowableCommons() {
auto throwSomething(string file = __FILE__, size_t line = __LINE__) {
static assert("`throwSomething` does not work for arrays and ranges");
}
auto throwAnyException(const string file = __FILE__, const size_t line = __LINE__) {
static assert("`throwAnyException` does not work for arrays and ranges");
}
auto throwException(T)(const string file = __FILE__, const size_t line = __LINE__) {
static assert("`throwException` does not work for arrays and ranges");
}
}
mixin template ShouldThrowableCommons() {
auto throwSomething(string file = __FILE__, size_t line = __LINE__) {
addMessage(" throw ");
addValue("something");
beginCheck;
return throwException!Throwable(file, line);
}
auto throwAnyException(const string file = __FILE__, const size_t line = __LINE__) {
addMessage(" throw ");
addValue("any exception");
beginCheck;
return throwException!Exception(file, line);
}
auto throwException(T)(const string file = __FILE__, const size_t line = __LINE__) {
addMessage(" throw a `");
addValue(T.stringof);
addMessage("`");
return ThrowableProxy!T(valueEvaluation.throwable, expectedValue, messages, file, line);
}
private {
ThrowableProxy!T throwExceptionImplementation(T)(Throwable t, string file = __FILE__, size_t line = __LINE__) {
addMessage(" throw a `");
addValue(T.stringof);
addMessage("`");
bool rightType = true;
if(t !is null) {
T castedThrowable = cast(T) t;
rightType = castedThrowable !is null;
}
return ThrowableProxy!T(t, expectedValue, rightType, messages, file, line);
}
}
}
mixin template ShouldCommons()
{
import std.string;
import fluentasserts.core.results;
private ValueEvaluation valueEvaluation;
private bool isNegation;
private void validateException() {
if(valueEvaluation.throwable !is null) {
throw valueEvaluation.throwable;
}
}
auto be() {
addMessage(" be");
return this;
}
auto should() {
return this;
}
auto not() {
addMessage(" not");
expectedValue = !expectedValue;
isNegation = !isNegation;
return this;
}
auto forceMessage(string message) {
messages = [];
addMessage(message);
return this;
}
auto forceMessage(Message[] messages) {
this.messages = messages;
return this;
}
private {
Message[] messages;
ulong mesageCheckIndex;
bool expectedValue = true;
void addMessage(string msg) {
if(mesageCheckIndex != 0) {
return;
}
messages ~= Message(false, msg);
}
void addValue(string msg) {
if(mesageCheckIndex != 0) {
return;
}
messages ~= Message(true, msg);
}
void addValue(EquableValue msg) {
if(mesageCheckIndex != 0) {
return;
}
messages ~= Message(true, msg.getSerialized);
}
void beginCheck() {
if(mesageCheckIndex != 0) {
return;
}
mesageCheckIndex = messages.length;
}
Result simpleResult(bool value, Message[] msg, string file, size_t line) {
return result(value, msg, [ ], file, line);
}
Result result(bool value, Message[] msg, IResult res, string file, size_t line) {
return result(value, msg, [ res ], file, line);
}
Result result(bool value, IResult res, string file, size_t line) {
return result(value, [], [ res ], file, line);
}
Result result(bool value, Message[] msg, IResult[] res, const string file, const size_t line) {
if(res.length == 0 && msg.length == 0) {
return Result(false);
}
auto finalMessage = new MessageResult(" should");
messages ~= Message(false, ".");
if(msg.length > 0) {
messages ~= Message(false, " ") ~ msg;
}
foreach(message; messages) {
if(message.isValue) {
finalMessage.addValue(message.text);
} else {
finalMessage.addText(message.text);
}
}
return Result(expectedValue != value, res, finalMessage, file, line);
}
}
}
version(Have_unit_threaded) {
import unit_threaded.should;
alias ReferenceException = UnitTestException;
} else {
alias ReferenceException = Exception;
}
class TestException : ReferenceException {
private {
IResult[] results;
}
this(IResult[] results, string fileName, size_t line, Throwable next = null) {
auto msg = results.map!"a.toString".filter!"a != ``".join("\n") ~ '\n';
this.results = results;
super(msg, fileName, line, next);
}
void print(ResultPrinter printer) {
foreach(result; results) {
result.print(printer);
printer.primary("\n");
}
}
}
/// Test Exception should separate the results by a new line
unittest {
import std.stdio;
IResult[] results = [
cast(IResult) new MessageResult("message"),
cast(IResult) new SourceResult("test/missing.txt", 10),
cast(IResult) new DiffResult("a", "b"),
cast(IResult) new ExpectedActualResult("a", "b"),
cast(IResult) new ExtraMissingResult("a", "b") ];
auto exception = new TestException(results, "unknown", 0);
exception.msg.should.equal(`message
--------------------
test/missing.txt:10
--------------------
Diff:
[-a][+b]
Expected:a
Actual:b
Extra:a
Missing:b
`);
}
@("TestException should concatenate all the Result strings")
unittest {
class TestResult : IResult {
override string toString() {
return "message";
}
void print(ResultPrinter) {}
}
auto exception = new TestException([ new TestResult, new TestResult, new TestResult], "", 0);
exception.msg.should.equal("message\nmessage\nmessage\n");
}
@("TestException should call all the result print methods on print")
unittest {
int count;
class TestResult : IResult {
override string toString() {
return "";
}
void print(ResultPrinter) {
count++;
}
}
auto exception = new TestException([ new TestResult, new TestResult, new TestResult], "", 0);
exception.print(new DefaultResultPrinter);
count.should.equal(3);
}
struct ThrowableProxy(T : Throwable) {
import fluentasserts.core.results;
private const {
bool expectedValue;
const string _file;
size_t _line;
}
private {
Message[] messages;
string reason;
bool check;
Throwable thrown;
T thrownTyped;
}
this(Throwable thrown, bool expectedValue, Message[] messages, const string file, size_t line) {
this.expectedValue = expectedValue;
this._file = file;
this._line = line;
this.thrown = thrown;
this.thrownTyped = cast(T) thrown;
this.messages = messages;
this.check = true;
}
~this() {
checkException;
}
auto msg() {
checkException;
check = false;
return thrown.msg.dup.to!string.strip;
}
auto original() {
checkException;
check = false;
return thrownTyped;
}
auto file() {
checkException;
check = false;
return thrown.file;
}
auto info() {
checkException;
check = false;
return thrown.info;
}
auto line() {
checkException;
check = false;
return thrown.line;
}
auto next() {
checkException;
check = false;
return thrown.next;
}
auto withMessage() {
auto s = ShouldString(msg);
check = false;
return s.forceMessage(messages ~ Message(false, " with message"));
}
auto withMessage(string expectedMessage) {
auto s = ShouldString(msg);
check = false;
return s.forceMessage(messages ~ Message(false, " with message")).equal(expectedMessage);
}
private void checkException() {
if(!check) {
return;
}
bool hasException = thrown !is null;
bool hasTypedException = thrownTyped !is null;
if(hasException == expectedValue && hasTypedException == expectedValue) {
return;
}
auto sourceResult = new SourceResult(_file, _line);
auto message = new MessageResult("");
if(reason != "") {
message.addText("Because " ~ reason ~ ", ");
}
message.addText(sourceResult.getValue ~ " should");
foreach(msg; messages) {
if(msg.isValue) {
message.addValue(msg.text);
} else {
message.addText(msg.text);
}
}
message.addText(".");
if(thrown is null) {
message.addText(" Nothing was thrown.");
} else {
message.addText(" An exception of type `");
message.addValue(thrown.classinfo.name);
message.addText("` saying `");
message.addValue(thrown.msg);
message.addText("` was thrown.");
}
throw new TestException([ cast(IResult) message ], _file, _line);
}
auto because(string reason) {
this.reason = reason;
return this;
}
}
auto should(T)(lazy T testData, const string file = __FILE__, const size_t line = __LINE__) @trusted {
static if(is(T == void)) {
auto callable = ({ testData; });
return expect(callable, file, line);
} else {
return expect(testData, file, line);
}
}
@("because")
unittest {
auto msg = ({
true.should.equal(false).because("of test reasons");
}).should.throwException!TestException.msg;
msg.split("\n")[0].should.equal("Because of test reasons, true should equal false.");
}
struct Assert {
static void opDispatch(string s, T, U)(T actual, U expected, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto sh = expect(actual);
static if(s[0..3] == "not") {
sh.not;
enum assertName = s[3..4].toLower ~ s[4..$];
} else {
enum assertName = s;
}
static if(assertName == "greaterThan" ||
assertName == "lessThan" ||
assertName == "above" ||
assertName == "below" ||
assertName == "between" ||
assertName == "within" ||
assertName == "approximately") {
sh.be;
}
mixin("auto result = sh." ~ assertName ~ "(expected);");
if(reason != "") {
result.because(reason);
}
}
static void between(T, U)(T actual, U begin, U end, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).to.be.between(begin, end);
if(reason != "") {
s.because(reason);
}
}
static void notBetween(T, U)(T actual, U begin, U end, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).not.to.be.between(begin, end);
if(reason != "") {
s.because(reason);
}
}
static void within(T, U)(T actual, U begin, U end, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).to.be.between(begin, end);
if(reason != "") {
s.because(reason);
}
}
static void notWithin(T, U)(T actual, U begin, U end, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).not.to.be.between(begin, end);
if(reason != "") {
s.because(reason);
}
}
static void approximately(T, U, V)(T actual, U expected, V delta, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).to.be.approximately(expected, delta);
if(reason != "") {
s.because(reason);
}
}
static void notApproximately(T, U, V)(T actual, U expected, V delta, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).not.to.be.approximately(expected, delta);
if(reason != "") {
s.because(reason);
}
}
static void beNull(T)(T actual, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).to.beNull;
if(reason != "") {
s.because(reason);
}
}
static void notNull(T)(T actual, string reason = "", const string file = __FILE__, const size_t line = __LINE__)
{
auto s = expect(actual, file, line).not.to.beNull;
if(reason != "") {
s.because(reason);
}
}
}
/// Assert should work for base types
unittest {
Assert.equal(1, 1, "they are the same value");
Assert.notEqual(1, 2, "they are not the same value");
Assert.greaterThan(1, 0);
Assert.notGreaterThan(0, 1);
Assert.lessThan(0, 1);
Assert.notLessThan(1, 0);
Assert.above(1, 0);
Assert.notAbove(0, 1);
Assert.below(0, 1);
Assert.notBelow(1, 0);
Assert.between(1, 0, 2);
Assert.notBetween(3, 0, 2);
Assert.within(1, 0, 2);
Assert.notWithin(3, 0, 2);
Assert.approximately(1.5f, 1, 0.6f);
Assert.notApproximately(1.5f, 1, 0.2f);
}
/// Assert should work for objects
unittest {
Object o = null;
Assert.beNull(o, "it's a null");
Assert.notNull(new Object, "it's not a null");
}
/// Assert should work for strings
unittest {
Assert.equal("abcd", "abcd");
Assert.notEqual("abcd", "abwcd");
Assert.contain("abcd", "bc");
Assert.notContain("abcd", 'e');
Assert.startWith("abcd", "ab");
Assert.notStartWith("abcd", "bc");
Assert.startWith("abcd", 'a');
Assert.notStartWith("abcd", 'b');
Assert.endWith("abcd", "cd");
Assert.notEndWith("abcd", "bc");
Assert.endWith("abcd", 'd');
Assert.notEndWith("abcd", 'c');
}
/// Assert should work for ranges
unittest {
Assert.equal([1, 2, 3], [1, 2, 3]);
Assert.notEqual([1, 2, 3], [1, 1, 3]);
Assert.contain([1, 2, 3], 3);
Assert.notContain([1, 2, 3], [5, 6]);
Assert.containOnly([1, 2, 3], [3, 2, 1]);
Assert.notContainOnly([1, 2, 3], [3, 1]);
}
void fluentHandler(string file, size_t line, string msg) nothrow {
import core.exception;
auto message = new MessageResult("Assert failed. " ~ msg);
auto source = new SourceResult(file, line);
throw new AssertError(message.toString ~ "\n\n" ~ source.toString, file, line);
}
void setupFluentHandler() {
import core.exception;
core.exception.assertHandler = &fluentHandler;
}
/// It should call the fluent handler
@trusted
unittest {
import core.exception;
setupFluentHandler;
scope(exit) core.exception.assertHandler = null;
bool thrown = false;
try {
assert(false, "What?");
} catch(Throwable t) {
thrown = true;
t.msg.should.startWith("Assert failed. What?\n");
}
thrown.should.equal(true);
}