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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; 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 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; 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 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 sepparate 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; } 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; } } struct ValueEvaluation { Throwable throwable; Duration duration; } auto evaluate(T)(lazy T testData) @trusted { auto begin = Clock.currTime; alias Result = Tuple!(T, "value", ValueEvaluation, "evaluation"); try { auto value = testData; static if(isCallable!T) { if(value !is null) { begin = Clock.currTime; value(); } } auto duration = Clock.currTime - begin; return Result(value, ValueEvaluation(null, duration)); } catch(Throwable t) { T result; static if(isCallable!T) { result = testData; } return Result(result, ValueEvaluation(t, Clock.currTime - begin)); } } /// evaluate should capture an exception unittest { int value() { throw new Exception("message"); } auto result = evaluate(value); result.evaluation.throwable.should.not.beNull; result.evaluation.throwable.msg.should.equal("message"); } /// evaluate should capture an exception thrown by a callable unittest { void value() { throw new Exception("message"); } auto result = evaluate(&value); result.evaluation.throwable.should.not.beNull; result.evaluation.throwable.msg.should.equal("message"); } auto should(T)(lazy T testData) { version(Have_vibe_d_data) { import vibe.data.json; import fluentasserts.vibe.json; static if(is(Unqual!T == Json)) { enum returned = true; return ShouldJson!T(testData.evaluate); } else { enum returned = false; } } else { enum returned = false; } static if(is(T == void)) { auto callable = ({ testData; }); return ShouldCallable!(typeof(callable))(callable); } else static if(!returned) { static if(is(T == class) || is(T == interface)) { return ShouldObject!T(testData.evaluate); } else static if(is(T == string)) { return ShouldString(testData.evaluate); } else static if(isInputRange!T) { return ShouldList!T(testData); } else static if(isCallable!T) { return ShouldCallable!T(testData); } else { return ShouldBaseType!T(testData.evaluate); } } } @("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 = actual.should; 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, file, line);"); 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 = actual.should.be.between(begin, end, file, line); 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 = actual.should.not.be.between(begin, end, file, line); 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 = actual.should.be.within(begin, end, file, line); 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 = actual.should.not.be.within(begin, end, file, line); 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 = actual.should.be.approximately(expected, delta, file, line); 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 = actual.should.not.be.approximately(expected, delta, file, line); if(reason != "") { s.because(reason); } } static void beNull(T)(T actual, string reason = "", const string file = __FILE__, const size_t line = __LINE__) { auto s = actual.should.beNull(file, line); if(reason != "") { s.because(reason); } } static void notNull(T)(T actual, string reason = "", const string file = __FILE__, const size_t line = __LINE__) { auto s = actual.should.not.beNull(file, line); 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); }