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StringTest.cpp
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// This file is subject to the terms and conditions defined in file 'LICENSE', which is part of this source code.
// Copyright (C) 2019 Silas B. Domingos
// All rights reserved.
//
#include "CppUnitTest.h"
#include "../../Library/Source/Proyth.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
using namespace Proyth;
using namespace Proyth::Rules;
namespace ProythTest
{
TEST_CLASS(StringTest)
{
public:
TEST_METHOD(ExpectTest)
{
char chars[] = "ABCABD";
char string[] = "ABC";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::Expect<char> rule(string);
// Consume characters 'ABC'
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(3U, context.getOffset());
// Can't consume next characters 'ABD'
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(3U, context.getOffset());
// Skip characters 'ABD' and reach the context end
context.forward(3);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(6U, context.getOffset());
}
TEST_METHOD(ChoiceTest)
{
char chars[] = "ABDABCABEACB";
char option1[] = "ABC";
char option2[] = "ABD";
char option3[] = "ABE";
Strings::View<char> options[] = { option1, option2, option3 };
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::Choice<char> rule(options);
// Consume characters 'ABD'
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(3U, context.getOffset());
// Consume characters 'ABC'
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(6U, context.getOffset());
// Consume characters 'ABE'
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(9U, context.getOffset());
// Can't consume next characters 'ACB'
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(9U, context.getOffset());
// Skip characters 'ACB' and reach the context end
context.forward(3);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(12U, context.getOffset());
}
TEST_METHOD(RangeTest)
{
char chars[] = "BCAD";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::Range<char> rule('A', 'C');
// Consume characters 'BCA'
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(3U, context.getOffset());
// Can't consume next character 'D'
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(3U, context.getOffset());
// Skip character 'D' and reach the context end
context.forward(1);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(4U, context.getOffset());
}
TEST_METHOD(DigitTest)
{
char chars[] = "0123456789a";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::Digit<char> rule;
// Consume all digits
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(10U, context.getOffset());
// Skip character 'a' and reach the context end
context.forward(1);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(11U, context.getOffset());
}
TEST_METHOD(LowerAZTest)
{
char chars[] = "abcdefghijklmnopqrstuvwxyz0";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::LowerAZ<char> rule;
// Consume alphabet
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(26U, context.getOffset());
// Skip character '0' and reach the context end
context.forward(1);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(27U, context.getOffset());
}
TEST_METHOD(UpperAZTest)
{
char chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZa";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::UpperAZ<char> rule;
// Consume alphabet
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(26U, context.getOffset());
// Skip character 'a' and reach the context end
context.forward(1);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(27U, context.getOffset());
}
TEST_METHOD(AnyAZTest)
{
char chars[] = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0";
Node<char>* tree = nullptr;
Context<char> context(chars, tree);
String::AnyAZ<char> rule;
// Consume alphabet
Assert::IsTrue(rule.consume(context));
Assert::AreEqual(52U, context.getOffset());
// Skip character '0' and reach the context end
context.forward(1);
// Can't consume next (reached the context end)
Assert::IsFalse(rule.consume(context));
Assert::AreEqual(53U, context.getOffset());
}
};
}