使用 RSpec 测试哈希内容
我有一个这样的测试：
it "should not indicate backwards jumps if the checker position is not a king" do
board = Board.new
game_board = board.create_test_board
board.add_checker(game_board, :red, 3, 3)
x_coord = 3
y_coord = 3
jump_locations = {}
jump_locations["upper_left"] = true
jump_locations["upper_right"] = false
jump_locations["lower_left"] = false
jump_locations["lower_right"] = true
adjusted_jump_locations = @bs.adjust_jump_locations_if_not_king(game_board, x_coord, y_coord, jump_locations)
adjusted_jump_locations["upper_left"].should == true
adjusted_jump_locations["upper_right"].should == false
adjusted_jump_locations["lower_left"].should == false
adjusted_jump_locations["lower_right"].should == false
end
我知道，这很冗长。有没有更简洁的方式来表达我的期望？我查看了文档，但看不到在哪里压缩我的期望。谢谢。
它也适用于哈希：
expect(jump_locations).to include(
"upper_left" => true,
"upper_right" => false,
"lower_left" => false,
"lower_right" => true
)
来源：include matcher @ relishapp.com
只是想添加到@David 的答案。您可以在 include 哈希中嵌套和使用匹配器。例如：
# Pass
expect({
"num" => 5,
"a" => {
"b" => [3, 4, 5]
}
}).to include({
"num" => a_value_between(3, 10),
"a" => {
"b" => be_an(Array)
}
})
警告：嵌套的 include 哈希必须测试所有键，否则测试将失败，例如：
# Fail
expect({
"a" => {
"b" => 1,
"c" => 2
}
}).to include({
"a" => {
"b" => 1
}
})
expect({ "a" => { "b" => 1, "c" => 2 } }).to include({ "a" => include({ "b" => 1 }) })
expect({ "a" => { "b" => 1, "c" => 2 } }).to include({ "a" => a_hash_including({ "b" => 1 }) })。 timjwade.com/2016/08/01/… 是一篇很好的博文。
RSpec 3 的语法已更改，但包含匹配器仍然是一个：
expect(jump_locations).to include(
"upper_left" => true,
"upper_right" => false,
"lower_left" => false,
"lower_right" => true
)
请参阅built-in-matchers#include-matcher。
另一种测试整个内容是否为哈希的简单方法是检查内容是否为哈希对象本身：
it 'is to be a Hash Object' do
workbook = {name: 'A', address: 'La'}
expect(workbook.is_a?(Hash)).to be_truthy
end
对于上面的问题，我们可以检查如下：
expect(adjusted_jump_locations).to match(hash_including('upper_left' => true))
