Revert "Squash test, will enable later"

This reverts commit 7bdc9cf.

Author: hamishknight

Tests/RegexBuilderTests/AlgorithmsTests.swift

@@ -10,7 +10,7 @@
 //===----------------------------------------------------------------------===//
 
 import XCTest
-import _StringProcessing
+@testable import _StringProcessing
 import RegexBuilder
 
 @available(SwiftStdlib 5.7, *)
@@ -104,6 +104,66 @@ class RegexConsumerTests: XCTestCase {
        result: "9+16, 3, 10, 99+1")
     )
   }
+
+  func testSwitches() {
+    // Failure cases
+    do {
+      switch "abcde" {
+      case Regex {
+        "a"
+        ZeroOrMore(.any)
+        "f"
+      }:
+        XCTFail()
+
+      case OneOrMore { CharacterClass.whitespace }:
+        XCTFail()
+
+      case "abc":
+        XCTFail()
+
+      case Regex {
+        "a"
+        "b"
+        "c"
+      }:
+        XCTFail()
+
+      default:
+        break
+      }
+    }
+    // Success cases
+    do {
+      let input = "abcde"
+
+      switch input {
+      case Regex {
+        "a"
+        ZeroOrMore(.any)
+        "e"
+      }:
+        break
+
+      default:
+        XCTFail()
+      }
+
+      guard case Regex({
+        "a"
+        ZeroOrMore(.any)
+        "e"
+      }) = input else {
+        XCTFail()
+        return
+      }
+
+      guard case OneOrMore(.word) = input else {
+        XCTFail()
+        return
+      }
+    }
+  }
 }
 
 class AlgorithmsResultBuilderTests: XCTestCase {

Tests/RegexTests/AlgorithmsTests.swift

@@ -334,4 +334,18 @@ class AlgorithmTests: XCTestCase {
       ["aa"])
   }
 
+  func testSwitches() {
+    switch "abcde" {
+    case try! Regex("a.*f"):
+      XCTFail()
+    case try! Regex("abc"):
+      XCTFail()
+
+    case try! Regex("a.*e"):
+      break // success
+
+    default:
+      XCTFail()
+    }
+  }
 }