SYM1000 / Test_Commit_Revert

A simple excercise for practicing for Test Commit Revert

Test_Commit_Revert

A simple exercise for practicing ( Test && Commit || Revert ) This is an activity for TC3405 course.

Prepare environment

• Using VsCode install Run on Save
• Go to settings:
  • File > Preferences > Settings
  • hitting Ctrl + , (Cmd + , if you’re on a Mac).
• In the left side menu click on Extensions
• Look for the extension Run On Save (Reload vscode if it doesn't appear)
• Open settings.json
• Inside emeraldwalk.runonsave add:

    "commands": [
            {
                "match": "(.+\\\\Test_Commit_Revert\\\\tests_stringcalculator\\.py|.+\\/Test_Commit_Revert\\/tests_stringcalculator\\.py)",
                "cmd": "git add ./tests_stringcalculator.py && git commit -m \"test\""
            },
            {
                "match": "(.+\\\\Test_Commit_Revert\\\\stringcalculator\\.py|.+\\/Test_Commit_Revert\\/stringcalculator\\.py)",
                "cmd": "python ./tests_stringcalculator.py && git commit -am progress || git reset --hard",
                "runIn": "terminal"
            },
        ]

• Your file should have the structure as the settings.json in this repository

Instructions

• Fork this repository into your Github.
• Perform the following TCR challenge before the talk about this topic.

String Calculator Kata (via Roy Osherove)

• 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 (for an empty string it will return 0). For example "" or "1" or "1,2"
  • Start with the simplest test case of an empty string and move to 1 and two numbers.
  • Remember to solve things as simple as possible so that you force yourself to write tests you did not think about.
  • Remember to refactor after each passing test.
• Allow the Add method to handle an unknown amount of numbers.
• 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)
• 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. all existing scenarios should still be supported
• 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

Notes

• Every time you save stringcalculator.py it will run the tests, if they fail then your changes in the file will be reverted
• To see the output of the test if they don't appear in terminal, go to Output (it's next to terminal, you can open it directly with ctrl+shit+u) and select Run On Save from the selection box
• Every time you save tests_stringcalculator.py it will save that change without a problem.