[test] renaming test/1_stdlib to just test/stdlib

test/stdlib/PrintString.swift

@@ -0,0 +1,48 @@
+// RUN: rm -rf %t && mkdir %t
+// RUN: %target-build-swift -c -force-single-frontend-invocation -parse-as-library -emit-module -emit-module-path %t/PrintTestTypes.swiftmodule -o %t/PrintTestTypes.o %S/Inputs/PrintTestTypes.swift
+// RUN: %target-build-swift %s -Xlinker %t/PrintTestTypes.o -I %t -L %t -o %t/main
+// RUN: %target-run %t/main
+// REQUIRES: executable_test
+
+import StdlibUnittest
+import PrintTestTypes
+
+
+let PrintTests = TestSuite("PrintString")
+PrintTests.test("Printable") {
+  let s0: String = "abc"
+  expectPrinted("abc", s0)
+  expectDebugPrinted("\"abc\"", s0)
+
+  let s1: String =  "\\ \' \" \0 \n \r \t \u{05}"
+  expectDebugPrinted("\"\\\\ \\\' \\\" \\0 \\n \\r \\t \\u{05}\"", s1)
+
+  let ch: Character = "a"
+  expectPrinted("a", ch)
+  expectDebugPrinted("\"a\"", ch)
+
+  let us0: UnicodeScalar = "a"
+  expectPrinted("a", us0)
+  expectDebugPrinted("\"a\"", us0)
+
+  let us1: UnicodeScalar = "\\"
+  expectPrinted("\\", us1)
+  expectEqual("\"\\\\\"", us1.description)
+  expectDebugPrinted("\"\\\\\"", us1)
+
+  let us2: UnicodeScalar = "あ"
+  expectPrinted("あ", us2)
+  expectEqual("\"あ\"", us2.description)
+  expectDebugPrinted("\"\\u{3042}\"", us2)
+}
+
+PrintTests.test("Printable") {
+  expectPrinted("Optional(\"meow\")", String?("meow"))
+}
+
+PrintTests.test("CustomStringInterpolation") {
+  let s = ("aaa\(1)bbb" as MyString).value
+  expectEqual("<segment aaa><segment 1><segment bbb>", s)
+}
+
+runAllTests()