String Calculator TDD Kata by Roy Osherove done in Clojure. Based on video Test-driving Clojure in Light Table by Misophistful.
- Editor: LightTable
- Generating build/generate template project: Leiningen
lein new string-calculator- Testing framework Expectations
lein do clean, test- Automatically re-run tests after source changed: lein-autoexpect
lein autoexpect- Finding updates in dependencies using lein-ancient:
lein ancient :all
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Create a simple String calculator with a method int Add(string numbers) The method can take 0, 1 or 2 numbers, and will return their sum.
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For an empty string it will return 0.
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For "" will return 0.
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For "1" will return 1
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For "1,2"
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Allow the Add method to handle an unknown amount of numbers
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Allow the Add method to handle new lines between numbers (instead of commas). The following input is ok: "1\n2,3" (will equal 6). The following input is NOT ok: “1,\n” (not need to prove it - just clarifying).
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Support different delimiters to change a delimiter, the beginning of the string will contain a separate line that looks like this: "//[delimiter]\n[numbers…]" For example "//;\n1;2" should return three where the default delimiter is ‘;’. The first line is optional.
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Calling Add with a negative number will throw an exception "negatives not allowed" - and the negative that was passed.if there are multiple negatives, show all of them in the exception message
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Numbers bigger than 1000 should be ignored, so adding 2 + 1001 = 2
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Delimiters can be of any length with the following format: "//[delimiter]\n" for example: "//[]\n12***3" should return 6
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Allow multiple delimiters like this: "//[delim1][delim2]\n" for example "//[][%]\n12%3" should return 6. Make sure you can also handle multiple delimiters with length longer than one char
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