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e4b6afb9ae
expression but ignoring its value. This is the right canonical way to do this. NFC, just testsuite changes. Swift SVN r28638
45 lines
2.5 KiB
Swift
45 lines
2.5 KiB
Swift
// RUN: %target-parse-verify-swift
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// XFAIL: linux
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import Foundation
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// Common pitfall: trying to subscript a string with integers.
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func testIntSubscripting(s: String, i: Int) {
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_ = s[i] // expected-error{{'subscript' is unavailable: cannot subscript String with an Int}}
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_ = s[17] // expected-error{{'subscript' is unavailable: cannot subscript String with an Int}}
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_ = s[i...i] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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_ = s[17..<20] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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_ = s[17...20] // expected-error{{subscript' is unavailable: cannot subscript String with a range of Int}}
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}
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func testNonAmbiguousStringComparisons() {
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let names = ["Chris", "Alex", "Ewa", "Barry", "Daniella"]
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_ = sorted(names, { s1, s2 in s1 > s2 })
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_ = sorted(names, { s1, s2 in s1 as String > s2 })
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}
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func testAmbiguousStringComparisons(s: String) {
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let nsString = s as NSString
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let a1 = s == nsString
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let a2 = s != nsString
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let a3 = s < nsString // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a4 = s <= nsString // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a5 = s >= nsString // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a6 = s > nsString // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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// now the other way
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let a7 = nsString == s
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let a8 = nsString != s
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let a9 = nsString < s // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a10 = nsString <= s // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a11 = nsString >= s // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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let a12 = nsString > s // expected-error{{'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?}}
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}
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func acceptsSequence<S : SequenceType>(sequence: S) {}
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func testStringIsNotASequence(s: String) {
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acceptsSequence(s) // expected-error {{cannot invoke 'acceptsSequence' with an argument list of type '(String)'}} expected-note {{expected an argument list of type '(S)'}}
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}
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