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119 lines
2.5 KiB
Ruby
119 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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describe "watch expression" do
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# Custom eval that will:
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# 1) Create an instance of pry that can use for multiple calls
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# 2) Exercise the after_eval hook
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# 3) Return the output
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def watch_eval(expr)
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output = @tester.eval(expr)
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@tester.pry.hooks.exec_hook :after_eval, nil, @tester.pry
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output
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end
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before do
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@tester = pry_tester
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@tester.pry.hooks.clear_event_hooks(:after_eval)
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watch_eval('watch --delete')
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end
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it "registers the after_eval hook" do
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watch_eval('watch 1+1')
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watch_eval('')
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expect(@tester.pry.hooks.hook_exists?(:after_eval, :watch_expression)).to eq(true)
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end
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it "prints no watched expressions" do
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expect(watch_eval('watch')).to match(/No watched expressions/)
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end
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it "watches an expression" do
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watch_eval 'watch 1+1'
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expect(watch_eval('watch')).to match(/=> 2/)
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end
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it "watches a local variable" do
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watch_eval('foo = :bar')
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watch_eval('watch foo')
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expect(watch_eval('watch')).to match(/=> :bar/)
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end
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it "prints when an expression changes" do
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ReplTester.start do
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input 'a = 1'
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output '=> 1'
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input 'watch a'
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output "Watching a\nwatch: a => 1"
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input "a = 2"
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output "watch: a => 2\n=> 2"
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end
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end
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it "prints when an expression is mutated" do
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ReplTester.start do
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input 'a = "one"'
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output '=> "one"'
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input 'watch a'
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output %(Watching a\nwatch: a => "one")
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input "a.sub! 'o', 'p'"
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output %(watch: a => "pne"\n=> "pne")
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end
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end
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it "doesn't print when an expresison remains the same" do
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ReplTester.start do
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input 'a = 1'
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output '=> 1'
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input 'watch a'
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output "Watching a\nwatch: a => 1"
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input "a = 1"
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output "=> 1"
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end
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end
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it "continues to work if you start a second pry instance" do
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ReplTester.start do
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input 'a = 1'
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output '=> 1'
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input 'watch a'
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output "Watching a\nwatch: a => 1"
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input "a = 2"
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output "watch: a => 2\n=> 2"
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end
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ReplTester.start do
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input 'b = 1'
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output '=> 1'
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input 'watch b'
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output "Watching b\nwatch: b => 1"
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input "b = 2"
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output "watch: b => 2\n=> 2"
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end
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end
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describe "deleting expressions" do
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before do
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watch_eval('watch :keeper')
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watch_eval('watch :delete')
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watch_eval('watch -d 2')
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end
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it "keeps keeper" do
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expect(watch_eval('watch')).to match(/keeper/)
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end
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it "deletes delete" do
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expect(watch_eval('watch')).not_to match(/delete/)
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end
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end
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end
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