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module fluentasserts.core.objects; public import fluentasserts.core.base; import fluentasserts.core.results; import std.string; import std.stdio; import std.traits; import std.conv; @safe: struct ShouldObject(T) { private { T testData; } mixin ShouldCommons; mixin ShouldThrowableCommons; this(U)(U value) { this.valueEvaluation = value.evaluation; this.testData = value.value; } auto beNull(const string file = __FILE__, const size_t line = __LINE__) @trusted { validateException; addMessage(" be "); addValue("null"); beginCheck; if(expectedValue) { return result(testData is null, cast(IResult) new ExpectedActualResult("null", "a `" ~ T.stringof ~ "` instance"), file, line); } else { return result(testData is null, cast(IResult) new ExpectedActualResult("a `" ~ T.stringof ~ "` instance", "null"), file, line); } } auto instanceOf(U)(const string file = __FILE__, const size_t line = __LINE__) @trusted { validateException; addValue(" instance of `" ~ U.stringof ~ "`"); beginCheck; U castedObject = cast(U) testData; return result(castedObject !is null, cast(IResult) new ExpectedActualResult(( expectedValue ? "" : "not " ) ~ "a `" ~ U.stringof ~ "` instance", "a `" ~ T.stringof ~ "` instance"), file, line); } auto equal(U)(U instance, const string file = __FILE__, const size_t line = __LINE__) @trusted { validateException; addMessage(" equal "); addValue("`" ~ U.stringof ~ "`"); beginCheck; return result(testData == instance, [] , new ExpectedActualResult(( expectedValue ? "" : "not " ) ~ instance.to!string, testData.to!string), file, line); } } /// When there is a lazy object that throws an it should throw that exception unittest { Object someLazyObject() { throw new Exception("This is it."); } ({ someLazyObject.should.not.beNull; }).should.throwAnyException.withMessage("This is it."); ({ someLazyObject.should.be.instanceOf!Object; }).should.throwAnyException.withMessage("This is it."); ({ someLazyObject.should.equal(new Object); }).should.throwAnyException.withMessage("This is it."); } /// object beNull unittest { Object o = null; ({ o.should.beNull; (new Object).should.not.beNull; }).should.not.throwAnyException; auto msg = ({ o.should.not.beNull; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("o should not be null."); msg.split("\n")[2].strip.should.equal("Expected:a `Object` instance"); msg.split("\n")[3].strip.should.equal("Actual:null"); msg = ({ (new Object).should.beNull; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("(new Object) should be null."); msg.split("\n")[2].strip.should.equal("Expected:null"); msg.split("\n")[3].strip.strip.should.equal("Actual:a `Object` instance"); } /// object instanceOf unittest { class BaseClass { } class ExtendedClass : BaseClass { } class SomeClass { } class OtherClass { } auto someObject = new SomeClass; auto otherObject = new OtherClass; auto extendedObject = new ExtendedClass; someObject.should.be.instanceOf!SomeClass; extendedObject.should.be.instanceOf!BaseClass; someObject.should.not.be.instanceOf!OtherClass; someObject.should.not.be.instanceOf!BaseClass; auto msg = ({ otherObject.should.be.instanceOf!SomeClass; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("otherObject should be instance of `SomeClass`."); msg.split("\n")[2].strip.should.equal("Expected:a `SomeClass` instance"); msg.split("\n")[3].strip.should.equal("Actual:a `OtherClass` instance"); msg = ({ otherObject.should.not.be.instanceOf!OtherClass; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("otherObject should not be instance of `OtherClass`."); msg.split("\n")[2].strip.should.equal("Expected:not a `OtherClass` instance"); msg.split("\n")[3].strip.should.equal("Actual:a `OtherClass` instance"); } /// object instanceOf interface unittest { interface MyInterface { } class BaseClass : MyInterface { } class OtherClass { } auto someObject = new BaseClass; MyInterface someInterface = new BaseClass; auto otherObject = new OtherClass; someInterface.should.be.instanceOf!MyInterface; someInterface.should.be.instanceOf!BaseClass; someObject.should.be.instanceOf!MyInterface; auto msg = ({ otherObject.should.be.instanceOf!MyInterface; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("otherObject should be instance of `MyInterface`."); msg.split("\n")[2].strip.should.equal("Expected:a `MyInterface` instance"); msg.split("\n")[3].strip.should.equal("Actual:a `OtherClass` instance"); msg = ({ someObject.should.not.be.instanceOf!MyInterface; }).should.throwException!TestException.msg; msg.split("\n")[0].should.equal("someObject should not be instance of `MyInterface`."); msg.split("\n")[2].strip.should.equal("Expected:not a `MyInterface` instance"); msg.split("\n")[3].strip.should.equal("Actual:a `BaseClass` instance"); } /// should throw exceptions for delegates that return basic types unittest { class SomeClass { } SomeClass value() { throw new Exception("not implemented"); } SomeClass noException() { return null; } value().should.throwAnyException.withMessage.equal("not implemented"); bool thrown; try { noException.should.throwAnyException; } catch (TestException e) { e.msg.should.startWith("noException should throw any exception. Nothing was thrown."); thrown = true; } thrown.should.equal(true); } /// object equal unittest { class TestEqual { private int value; this(int value) { this.value = value; } } auto instance = new TestEqual(1); instance.should.equal(instance); instance.should.not.equal(new TestEqual(1)); auto msg = ({ instance.should.not.equal(instance); }).should.throwException!TestException.msg; msg.should.startWith("instance should not equal `TestEqual`."); msg = ({ instance.should.equal(new TestEqual(1)); }).should.throwException!TestException.msg; msg.should.startWith("instance should equal `TestEqual`."); } /// null object comparison unittest { Object nullObject; auto msg = ({ nullObject.should.equal(new Object); }).should.throwException!TestException.msg; msg.should.startWith("nullObject should equal `Object`."); msg = ({ (new Object).should.equal(null); }).should.throwException!TestException.msg; msg.should.startWith("(new Object) should equal `typeof(null)`."); }