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module fluentasserts.core.operations.throwable;
public import fluentasserts.core.base;
import fluentasserts.core.results;
import fluentasserts.core.lifecycle;
import fluentasserts.core.expect;
import fluentasserts.core.serializers;
import std.string;
import std.conv;
import std.algorithm;
import std.array;
static immutable throwAnyDescription = "Tests that the tested callable throws an exception.";
version(unittest) {
class CustomException : Exception {
this(string msg, string fileName = "", size_t line = 0, Throwable next = null) {
super(msg, fileName, line, next);
}
}
}
///
IResult[] throwAnyException(ref Evaluation evaluation) @trusted nothrow {
IResult[] results;
evaluation.message.addText(". ");
auto thrown = evaluation.currentValue.throwable;
if(evaluation.currentValue.throwable && evaluation.isNegated) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult("No exception to be thrown", "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
if(!thrown && !evaluation.isNegated) {
evaluation.message.addText("No exception was thrown.");
try results ~= new ExpectedActualResult("Any exception to be thrown", "Nothing was thrown"); catch(Exception) {}
}
if(thrown && !evaluation.isNegated && "Throwable" in evaluation.currentValue.meta) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText("A `Throwable` saying `" ~ message ~ "` was thrown.");
try results ~= new ExpectedActualResult("Any exception to be thrown", "A `Throwable` with message `" ~ message ~ "` was thrown"); catch(Exception) {}
}
evaluation.throwable = thrown;
evaluation.currentValue.throwable = null;
return results;
}
/// It should be successfull when the function does not throw
unittest {
void test() {}
expect({ test(); }).to.not.throwAnyException();
}
/// It should fail when an exception is thrown and none is expected
unittest {
void test() { throw new Exception("Test exception"); }
bool thrown;
try {
expect({ test(); }).to.not.throwAnyException();
} catch(TestException e) {
thrown = true;
assert(e.message.indexOf("should not throw any exception. `object.Exception` saying `Test exception` was thrown.") != -1);
assert(e.message.indexOf("\n Expected:No exception to be thrown\n") != -1);
assert(e.message.indexOf("\n Actual:`object.Exception` saying `Test exception`\n") != -1);
}
assert(thrown, "The exception was not thrown");
}
/// It should be successfull when the function throws an expected exception
unittest {
void test() { throw new Exception("test"); }
expect({ test(); }).to.throwAnyException;
}
/// It should not be successfull when the function throws a throwable and an exception is expected
unittest {
void test() { assert(false); }
bool thrown;
try {
expect({ test(); }).to.throwAnyException;
} catch(TestException e) {
thrown = true;
assert(e.message.indexOf("should throw any exception. A `Throwable` saying `Assertion failure` was thrown.") != -1);
assert(e.message.indexOf("\n Expected:Any exception to be thrown\n") != -1);
assert(e.message.indexOf("\n Actual:A `Throwable` with message `Assertion failure` was thrown\n") != -1);
assert(e.file == "source/fluentasserts/core/operations/throwable.d");
}
assert(thrown, "The exception was not thrown");
}
/// It should be successfull when the function throws an expected exception
unittest {
void test() { throw new Exception("test"); }
expect({ test(); }).to.throwAnyException;
}
IResult[] throwAnyExceptionWithMessage(ref Evaluation evaluation) @trusted nothrow {
IResult[] results;
auto thrown = evaluation.currentValue.throwable;
if(thrown !is null && evaluation.isNegated) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult("No exception to be thrown", "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
if(thrown is null && !evaluation.isNegated) {
evaluation.message.addText("Nothing was thrown.");
try results ~= new ExpectedActualResult("Any exception to be thrown", "Nothing was thrown"); catch(Exception) {}
}
if(thrown && !evaluation.isNegated && "Throwable" in evaluation.currentValue.meta) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText(". A `Throwable` saying `" ~ message ~ "` was thrown.");
try results ~= new ExpectedActualResult("Any throwable with the message `" ~ message ~ "` to be thrown", "A `" ~ thrown.classinfo.name ~ "` with message `" ~ message ~ "` was thrown"); catch(Exception) {}
}
evaluation.throwable = thrown;
evaluation.currentValue.throwable = null;
return results;
}
///
IResult[] throwException(ref Evaluation evaluation) @trusted nothrow {
evaluation.message.addText(".");
string exceptionType;
if("exceptionType" in evaluation.expectedValue.meta) {
exceptionType = evaluation.expectedValue.meta["exceptionType"].cleanString;
}
IResult[] results;
auto thrown = evaluation.currentValue.throwable;
if(thrown && evaluation.isNegated && thrown.classinfo.name == exceptionType) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult("no `" ~ exceptionType ~ "` to be thrown", "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
if(thrown && !evaluation.isNegated && thrown.classinfo.name != exceptionType) {
string message;
try message = thrown.message.to!string; catch(Exception) {}
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult(exceptionType, "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
evaluation.throwable = thrown;
evaluation.currentValue.throwable = null;
return results;
}
/// Should be able to catch a certain exception type
unittest {
expect({
throw new CustomException("test");
}).to.throwException!CustomException;
}
/// It should fail when an unexpected exception is thrown
unittest {
bool thrown;
try {
expect({
throw new Exception("test");
}).to.throwException!CustomException;
} catch(TestException e) {
thrown = true;
assert(e.message.indexOf("should throw exception \"fluentasserts.core.operations.throwable.CustomException\".`object.Exception` saying `test` was thrown.") != -1);
assert(e.message.indexOf("\n Expected:fluentasserts.core.operations.throwable.CustomException\n") != -1);
assert(e.message.indexOf("\n Actual:`object.Exception` saying `test`\n") != -1);
assert(e.file == "source/fluentasserts/core/operations/throwable.d");
}
assert(thrown, "The exception was not thrown");
}
/// It should not fail when an exception is thrown and it is not expected
unittest {
expect({
throw new Exception("test");
}).to.not.throwException!CustomException;
}
/// It should fail when an different exception than the one checked is thrown
unittest {
bool thrown;
try {
expect({
throw new CustomException("test");
}).to.not.throwException!CustomException;
} catch(TestException e) {
thrown = true;
assert(e.message.indexOf("should not throw exception \"fluentasserts.core.operations.throwable.CustomException\".`fluentasserts.core.operations.throwable.CustomException` saying `test` was thrown.") != -1);
assert(e.message.indexOf("\n Expected:no `fluentasserts.core.operations.throwable.CustomException` to be thrown\n") != -1);
assert(e.message.indexOf("\n Actual:`fluentasserts.core.operations.throwable.CustomException` saying `test`\n") != -1);
assert(e.file == "source/fluentasserts/core/operations/throwable.d");
}
assert(thrown, "The exception was not thrown");
}
///
IResult[] throwExceptionWithMessage(ref Evaluation evaluation) @trusted nothrow {
import std.stdio;
evaluation.message.addText(". ");
string exceptionType;
string message;
string expectedMessage = evaluation.expectedValue.strValue;
if(expectedMessage.startsWith(`"`)) {
expectedMessage = expectedMessage[1..$-1];
}
if("exceptionType" in evaluation.expectedValue.meta) {
exceptionType = evaluation.expectedValue.meta["exceptionType"].cleanString;
}
IResult[] results;
auto thrown = evaluation.currentValue.throwable;
evaluation.throwable = thrown;
evaluation.currentValue.throwable = null;
if(thrown) {
try message = thrown.message.to!string; catch(Exception) {}
}
if(!thrown && !evaluation.isNegated) {
evaluation.message.addText("No exception was thrown.");
try results ~= new ExpectedActualResult("`" ~ exceptionType ~ "` with message `" ~ expectedMessage ~ "` to be thrown", "nothing was thrown"); catch(Exception) {}
}
if(thrown && !evaluation.isNegated && thrown.classinfo.name != exceptionType) {
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult("`" ~ exceptionType ~ "` to be thrown", "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
if(thrown && !evaluation.isNegated && thrown.classinfo.name == exceptionType && message != expectedMessage) {
evaluation.message.addText("`");
evaluation.message.addValue(thrown.classinfo.name);
evaluation.message.addText("` saying `");
evaluation.message.addValue(message);
evaluation.message.addText("` was thrown.");
try results ~= new ExpectedActualResult("`" ~ exceptionType ~ "` saying `" ~ message ~ "` to be thrown", "`" ~ thrown.classinfo.name ~ "` saying `" ~ message ~ "`"); catch(Exception) {}
}
return results;
}
/// It fails when an exception is not catched
unittest {
Exception exception;
try {
expect({}).to.throwException!Exception.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception !is null);
expect(exception.message).to.contain(`should throw exception with message equal "test". No exception was thrown.`);
}
/// It does not fail when an exception is not expected and none is not catched
unittest {
Exception exception;
try {
expect({}).not.to.throwException!Exception.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception is null);
}
/// It fails when the caught exception has a different type
unittest {
Exception exception;
try {
expect({
throw new CustomException("hello");
}).to.throwException!Exception.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception !is null);
expect(exception.message).to.contain("should throw exception with message equal \"test\". `fluentasserts.core.operations.throwable.CustomException` saying `hello` was thrown.");
}
/// It does not fail when a certain exception type is not catched
unittest {
Exception exception;
try {
expect({
throw new CustomException("hello");
}).not.to.throwException!Exception.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception is null);
}
/// It fails when the caught exception has a different message
unittest {
Exception exception;
try {
expect({
throw new CustomException("hello");
}).to.throwException!CustomException.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception !is null);
expect(exception.message).to.contain("should throw exception with message equal \"test\". `fluentasserts.core.operations.throwable.CustomException` saying `hello` was thrown.");
}
/// It does not fails when the caught exception is expected to have a different message
unittest {
Exception exception;
try {
expect({
throw new CustomException("hello");
}).not.to.throwException!CustomException.withMessage.equal("test");
} catch(Exception e) {
exception = e;
}
assert(exception is null);
}