Sheshtawy #74
Sheshtawy #74
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lib/tree.rb
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| class Tree | ||
| attr_#fill_in :height, :age, :apples, :alive | ||
| attr_accessor :height, :age, :apples, :alive |
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should all attributes be settable?
| end | ||
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| def age! | ||
| def age! # I'm not sure why this has a bang |
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lib/tree.rb
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| def pick_an_apple! | ||
| raise NoApplesError, "This tree has no apples" unless self.any_apples? | ||
| if self.any_apples? | ||
| return @apples.pop |
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| require_relative '../lib/tree' | ||
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| describe Tree do | ||
| let(:tree) { Tree.new(1, [], true, 1) } |
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nice use of .let. in rails apps, you'll often see use of a library like factory_bot for building factories to use in test. there are also fixture libraries that are popular.
| expect(tree.dead?).to be true | ||
| end | ||
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| it 'is alive when calling dead? returns false' do |
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looks great but i'd recommend using contexts here to have a clear happy vs unhappy path. it also improves readability. contexts can also be nested.
describe Tree do
it 'has a particular attribute' do
...
end
context 'when alive' do
it '..' do
end
end
context 'when dead' do
it '..' do
end
end
end
| if @age == 50 | ||
| @alive = false | ||
| elsif | ||
| @age = @age + 1 |
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@age += 1 is the shorthand equivalent.
BTW, I appreciate that it doesn't continue to age after it has died. 👍
lib/tree.rb
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| end | ||
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| def any_apples? | ||
| @apples.length >= 1 ? true : false |
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The ternary here is redundant. @apples.length >= 1 already returns true or false.
@apples.any? should do the trick, too.
Update tests
Remove unnecessary ternary operator
3 participants
@jaybobo This test suite might not be covering all cases, but I wanted to get your feedback on how I'm writing tests vs best practices, and checking if I'm missing something major