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d0c0043f93
* Use _ephemeralString for substring comparison Add back != for String/Substring comparison * OK fine, Linux, if you're going to be difficult * Different forms of comparison, tests
186 lines
6.1 KiB
Swift
186 lines
6.1 KiB
Swift
// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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import StdlibUnittest
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var SubstringTests = TestSuite("SubstringTests")
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func checkMatch<S: Collection, T: Collection>(_ x: S, _ y: T, _ i: S.Index)
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where S.Index == T.Index, S.Iterator.Element == T.Iterator.Element,
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S.Iterator.Element: Equatable
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{
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expectEqual(x[i], y[i])
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}
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SubstringTests.test("Equality") {
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let s = "abcdefg"
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let s1 = s[s.index(s.startIndex, offsetBy: 2) ..<
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s.index(s.startIndex, offsetBy: 4)]
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let s2 = s1[s1.startIndex..<s1.endIndex]
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let s3 = s2[s1.startIndex..<s1.endIndex]
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expectEqual(s1, "cd")
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expectEqual(s2, "cd")
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expectEqual(s3, "cd")
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expectTrue("" == s.dropFirst(s.count))
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expectTrue(s.dropFirst().dropFirst(s.count) == s.dropFirst(s.count))
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expectEqual("ab" as String, s.prefix(2))
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expectEqual("fg" as String, s.suffix(2))
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#if _runtime(_ObjC)
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let emoji: String = s + "😄👍🏽🇫🇷👩👩👧👦🙈" + "😡🇧🇪🇨🇦🇮🇳"
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expectTrue(s == s[...])
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expectTrue(s[...] == s)
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expectTrue(s.dropFirst(2) != s)
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expectTrue(s == s.dropFirst(0))
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expectTrue(s != s.dropFirst(1))
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expectTrue(s != s.dropLast(1))
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expectEqual(s[...], s[...])
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expectEqual(s.dropFirst(0), s.dropFirst(0))
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expectTrue(s == s.dropFirst(0))
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expectTrue(s.dropFirst(2) != s.dropFirst(1))
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expectNotEqual(s.dropLast(2), s.dropLast(1))
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expectEqual(s.dropFirst(1), s.dropFirst(1))
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expectTrue(s != s[...].dropFirst(1))
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let i = emoji.index(of: "😄")!
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expectEqual("😄👍🏽" as String, emoji[i...].prefix(2))
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expectTrue("😄👍🏽🇫🇷👩👩👧👦🙈😡🇧🇪" as String == emoji[i...].dropLast(2))
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expectTrue("🇫🇷👩👩👧👦🙈😡🇧🇪" as String == emoji[i...].dropLast(2).dropFirst(2))
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expectTrue(s as String != emoji[i...].dropLast(2).dropFirst(2))
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expectEqualSequence("😄👍🏽🇫🇷👩👩👧👦🙈😡🇧🇪" as String, emoji[i...].dropLast(2))
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expectEqualSequence("🇫🇷👩👩👧👦🙈😡🇧🇪" as String, emoji[i...].dropLast(2).dropFirst(2))
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#endif
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// equatable conformance
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expectTrue("one,two,three".split(separator: ",").contains("two"))
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expectTrue("one,two,three".split(separator: ",") == ["one","two","three"])
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}
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SubstringTests.test("Comparison") {
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var s = "abc"
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s += "defg"
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expectFalse(s < s[...])
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expectTrue(s <= s[...])
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expectTrue(s >= s[...])
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expectFalse(s > s[...])
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expectFalse(s[...] < s)
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expectTrue(s[...] <= s)
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expectTrue(s[...] >= s)
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expectFalse(s[...] > s)
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expectFalse(s[...] < s[...])
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expectTrue(s[...] <= s[...])
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expectTrue(s[...] >= s[...])
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expectFalse(s[...] > s[...])
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expectTrue(s < s.dropFirst())
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expectFalse(s > s.dropFirst())
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expectFalse(s < s.dropLast())
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expectTrue(s > s.dropLast())
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expectTrue(s.dropFirst() < s.dropFirst(2))
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expectFalse(s.dropFirst() > s.dropFirst(2))
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expectFalse(s.dropLast() < s.dropLast(2))
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expectTrue(s.dropLast() > s.dropLast(2))
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expectFalse(s.dropFirst() < s.dropFirst().dropLast())
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expectTrue(s.dropFirst() > s.dropFirst().dropLast())
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expectTrue(s.dropFirst() > s)
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expectTrue(s.dropFirst() > s[...])
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expectTrue(s >= s[...])
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expectTrue(s.dropFirst() >= s.dropFirst())
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// comparable conformance
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expectEqualSequence("pen,pineapple,apple,pen".split(separator: ",").sorted(),
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["apple", "pen", "pen", "pineapple"])
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}
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SubstringTests.test("CharacterView") {
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let s = "abcdefg"
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var t = s.characters.dropFirst(2)
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var u = t.dropFirst(2)
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checkMatch(s.characters, t, t.startIndex)
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checkMatch(s.characters, t, t.index(after: t.startIndex))
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checkMatch(s.characters, t, t.index(before: t.endIndex))
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checkMatch(s.characters, t, u.startIndex)
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checkMatch(t, u, u.startIndex)
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checkMatch(t, u, u.index(after: u.startIndex))
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checkMatch(t, u, u.index(before: u.endIndex))
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expectEqual("", String(t.dropFirst(10)))
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expectEqual("", String(t.dropLast(10)))
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expectEqual("", String(u.dropFirst(10)))
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expectEqual("", String(u.dropLast(10)))
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t.replaceSubrange(t.startIndex...t.startIndex, with: ["C"])
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u.replaceSubrange(u.startIndex...u.startIndex, with: ["E"])
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expectEqual(String(u), "Efg")
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expectEqual(String(t), "Cdefg")
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expectEqual(s, "abcdefg")
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}
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SubstringTests.test("UnicodeScalars") {
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let s = "abcdefg"
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var t = s.unicodeScalars.dropFirst(2)
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var u = t.dropFirst(2)
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checkMatch(s.unicodeScalars, t, t.startIndex)
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checkMatch(s.unicodeScalars, t, t.index(after: t.startIndex))
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checkMatch(s.unicodeScalars, t, t.index(before: t.endIndex))
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checkMatch(s.unicodeScalars, t, u.startIndex)
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checkMatch(t, u, u.startIndex)
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checkMatch(t, u, u.index(after: u.startIndex))
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checkMatch(t, u, u.index(before: u.endIndex))
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expectEqual("", String(t.dropFirst(10)))
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expectEqual("", String(t.dropLast(10)))
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expectEqual("", String(u.dropFirst(10)))
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expectEqual("", String(u.dropLast(10)))
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t.replaceSubrange(t.startIndex...t.startIndex, with: ["C"])
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u.replaceSubrange(u.startIndex...u.startIndex, with: ["E"])
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expectEqual(String(u), "Efg")
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expectEqual(String(t), "Cdefg")
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expectEqual(s, "abcdefg")
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}
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SubstringTests.test("UTF16View") {
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let s = "abcdefg"
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let t = s.utf16.dropFirst(2)
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let u = t.dropFirst(2)
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checkMatch(s.utf16, t, t.startIndex)
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checkMatch(s.utf16, t, t.index(after: t.startIndex))
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checkMatch(s.utf16, t, t.index(before: t.endIndex))
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checkMatch(s.utf16, t, u.startIndex)
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checkMatch(t, u, u.startIndex)
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checkMatch(t, u, u.index(after: u.startIndex))
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checkMatch(t, u, u.index(before: u.endIndex))
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expectEqual("", String(t.dropFirst(10))!)
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expectEqual("", String(t.dropLast(10))!)
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expectEqual("", String(u.dropFirst(10))!)
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expectEqual("", String(u.dropLast(10))!)
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}
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SubstringTests.test("UTF8View") {
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let s = "abcdefg"
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let t = s.utf8.dropFirst(2)
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let u = t.dropFirst(2)
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checkMatch(s.utf8, t, t.startIndex)
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checkMatch(s.utf8, t, t.index(after: t.startIndex))
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checkMatch(s.utf8, t, u.startIndex)
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checkMatch(t, u, u.startIndex)
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checkMatch(t, u, u.index(after: u.startIndex))
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expectEqual("", String(t.dropFirst(10))!)
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expectEqual("", String(t.dropLast(10))!)
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expectEqual("", String(u.dropFirst(10))!)
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expectEqual("", String(u.dropLast(10))!)
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}
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runAllTests()
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