Add startCase function

[Shekhar Gulati]

[Francesca Guiducci]

Hi @shekhargulati, I would like to implement this new function if that's ok.

To start, I'm writing down some test cases to practice my rusty-ish TDD.

So far I have:

    @Test(expected = IllegalArgumentException.class)
    public void startCase_shouldThrowException() throws Exception {
        startCase(null);
    }

    @Test
    public void startCase_shouldStartCaseInputString() throws Exception {
        assertThat(startCase(""), equalTo(""));
        assertThat(startCase("ALL CAPS"), equalTo("All Caps"));
        assertThat(startCase("camelCase"), equalTo("Camel Case"));
        assertThat(startCase("kebab-case"), equalTo("'Kebab Case' Case"));
        assertThat(startCase("Snake_case"), equalTo("Snake Case"));
        assertThat(startCase("  spaces  "), equalTo("Spaces"));
        assertThat(startCase("spaces    between    words"), equalTo("Spaces Between Words"));
        assertThat(startCase("--dashes--"), equalTo("Dashes"));
        assertThat(startCase("dashes----between----words"), equalTo("Dashes Between Words"));
    }

Is there some other use case/edge case I'm not considering that I should be aware of?

Thank you

[Arctic Ice Studio]

The test cases are fine, but I think there needs to be a decision if the method should modify the input in cases of whitespaces/dashes/underscores etc. It might be a bit confusing if you pass a String like snake_case and suddenly the _ character has been replaced by a whitespace. On the other hand a method to only capitalize the first character is already implemented.

Maybe the issue description should be extended by @shekhargulati to clarify the use case for this method.

[Francesca Guiducci]

@arcticicestudio Thank you for your comment. I agree with your thoughts/concerns.

Before implementing the startCase function in this repo, I researched the web but couldn't find any real "source of truth" on how this function should behave.
The only implementation I could find was lodalodash's (https://lodash.com/docs/4.17.4#startCase), which indeed strips the string from - and _, and that's why I went with the same behavior.

@shekhargulati Please let us know. Thank you all