116 lines
2.1 KiB
CoffeeScript
116 lines
2.1 KiB
CoffeeScript
# Exception Handling
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# ------------------
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# shared nonce
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nonce = {}
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# Throw
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test "basic exception throwing", ->
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throws (-> throw 'error'), 'error'
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# Empty Try/Catch/Finally
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test "try can exist alone", ->
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try
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test "try/catch with empty try, empty catch", ->
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try
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# nothing
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catch err
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# nothing
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test "single-line try/catch with empty try, empty catch", ->
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try catch err
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test "try/finally with empty try, empty finally", ->
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try
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# nothing
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finally
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# nothing
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test "single-line try/finally with empty try, empty finally", ->
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try finally
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test "try/catch/finally with empty try, empty catch, empty finally", ->
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try
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catch err
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finally
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test "single-line try/catch/finally with empty try, empty catch, empty finally", ->
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try catch err then finally
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# Try/Catch/Finally as an Expression
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test "return the result of try when no exception is thrown", ->
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result = try
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nonce
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catch err
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undefined
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finally
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undefined
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eq nonce, result
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test "single-line result of try when no exception is thrown", ->
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result = try nonce catch err then undefined
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eq nonce, result
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test "return the result of catch when an exception is thrown", ->
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fn = ->
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try
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throw ->
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catch err
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nonce
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doesNotThrow fn
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eq nonce, fn()
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test "single-line result of catch when an exception is thrown", ->
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fn = ->
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try throw (->) catch err then nonce
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doesNotThrow fn
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eq nonce, fn()
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test "optional catch", ->
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fn = ->
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try throw ->
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nonce
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doesNotThrow fn
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eq nonce, fn()
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# Try/Catch/Finally Interaction With Other Constructs
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test "try/catch with empty catch as last statement in a function body", ->
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fn = ->
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try nonce
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catch err
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eq nonce, fn()
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# Catch leads to broken scoping: #1595
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test "try/catch with a reused variable name.", ->
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do ->
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try
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inner = 5
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catch inner
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# nothing
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eq typeof inner, 'undefined'
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# Allowed to destructure exceptions: #2580
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test "try/catch with destructuring the exception object", ->
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result = try
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missing.object
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catch {message}
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message
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eq message, 'missing is not defined'
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