Mi primera kata y mi primera vez con Groovy

mfdez1982/StringCalculator.groovy

@@ -0,0 +1,47 @@
+class StringCalculator
+{
+	def input
+	def separatorSet = '\n,'
+	def SEP_HEADER_PATTERN = '//(.+)\n'
+
+	Integer add(String stringNumbers)
+	{
+		input = stringNumbers
+		parseAndRemoveSeparatorHeader()
+		if (input.contains('-'))
+			parseNegativeNumbersAndThrowException();
+		else
+		{
+			replaceSeparatorsWithSpaces()
+			return add()
+		}
+	}
+
+	private Integer add()
+	{	
+		Integer total = 0;
+		for (String number : input.split())
+			total += number.toInteger()<1000 ? number.toInteger() : 0
+		return total
+	}
+
+	private void parseAndRemoveSeparatorHeader()
+	{
+		separatorSet += input.find(SEP_HEADER_PATTERN){ match, sep -> return sep};
+		input = input - ~SEP_HEADER_PATTERN
+	}	
+
+	private void replaceSeparatorsWithSpaces()
+	{
+		input = input.tr(separatorSet, ' ')
+	}
+
+	private void parseNegativeNumbersAndThrowException()
+	{
+		def exceptionMessage = 'negatives not allowed: '
+		def matcher = input =~ /(-\d*)/
+		for(String[] match : matcher)
+			exceptionMessage += ' ' + match[0]
+		throw new Exception(exceptionMessage)
+	}
+}

mfdez1982/StringCalculatorTest.groovy

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+import groovy.util.GroovyTestCaseclass StringCalculatorTest extends GroovyTestCase{	def calculator = new StringCalculator()		void testEmptyString()	{		assertEquals 0, calculator.add("")	}	void testZero()	{		assertEquals 0, calculator.add("0")	}		void testOne()	{		assertEquals 1, calculator.add("1")	}		void testZeroPlusOne()	{		assertEquals 1, calculator.add("0,1")	}		void testOnePlusTwo()	{		assertEquals 3, calculator.add("1,2")	}		void testWithThreeNumbers()	{		assertEquals 6, calculator.add("1,2,3")	}		void testWithUndeterminedNumberOfNumbers()	{		assertEquals 15, calculator.add("0,1,2,3,4,5")	}		void testNewLineSeparator()	{		assertEquals 3, calculator.add("1\n2")	}		void testComaAndNewLineSeparatorMixed()	{		assertEquals 15, calculator.add("1\n2,3,4\n5")	}	void testCustomSeparator()	{		assertEquals 3, calculator.add("//;\n1;2")	}	void testOnlyNegativeNumberNotAllowed()	{		def msg = shouldFail {calculator.add("-1")}		println msg	}			void testNegativeNumberNotAllowed()	{		def msg = shouldFail {calculator.add("8,-6,9")}		println msg	}			void testSeveralNegativeNumberNotAllowed()	{		def msg = shouldFail {calculator.add("8,-6,9,-3")}		println msg	}			void testNumbersBiggerThanThousandShouldBeIgnored()	{		assertEquals 4, calculator.add("1,2000,3")	}		void testCustomSeparatorOfVariableLength()	{		assertEquals 4, calculator.add("//[***]\n1***2000***3")	}		void testMultipleSeparators()	{		assertEquals 10, calculator.add("//[*][%][+]\n1*2%3+4")	}		void testMultipleSeparatorsWithVariableLength()	{		assertEquals 10, calculator.add("//[***][%][+]\n1***2%3+4")	}		void testMultipleSeparatorsWithVariableLengthAndNumbersBiggerThanThousand()	{		assertEquals 8, calculator.add("//[***][%%][++++]\n1***2000%%3++++4")	}}