diff --git a/Tests/SwiftFormatPrettyPrintTests/UnknownNodeTests.swift b/Tests/SwiftFormatPrettyPrintTests/UnknownNodeTests.swift
deleted file mode 100644
index 51f725cab..000000000
--- a/Tests/SwiftFormatPrettyPrintTests/UnknownNodeTests.swift
+++ /dev/null
@@ -1,93 +0,0 @@
-import XCTest
-
-/// Tests for unknown/malformed nodes that ensure that they are handled as verbatim text so that
-/// their internal tokens do not get squashed together.
-final class UnknownNodeTests: PrettyPrintTestCase {
-  func testUnknownDecl() throws {
-    throw XCTSkip("This is no longer an unknown declaration")
-
-    let input =
-      """
-      struct MyStruct where {
-        let a = 123
-      }
-      """
-
-    assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 45)
-  }
-
-  func testUnknownExpr() throws {
-    throw XCTSkip("This is no longer an unknown expression")
-
-    let input =
-      """
-      (foo where bar)
-      """
-
-    assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 45)
-  }
-
-  func testUnknownPattern() throws {
-    let input =
-      """
-      if case * ! = x {
-        bar()
-      }
-      """
-
-    let expected =
-      """
-      if case
-        * ! = x
-      {
-        bar()
-      }
-
-      """
-
-    assertPrettyPrintEqual(input: input, expected: expected, linelength: 45)
-  }
-
-  func testUnknownStmt() throws {
-    throw XCTSkip("This is no longer an unknown statement")
-
-    let input =
-      """
-      if foo where {
-      }
-      """
-
-    assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 45)
-  }
-
-  func testUnknownType() throws {    
-    // This one loses the space after the colon because the break would normally be inserted before
-    // the first token in the type name.
-    let input =
-      """
-      let x: where
-      """
-
-    let expected =
-      """
-      let x:where
-
-      """
-
-    assertPrettyPrintEqual(input: input, expected: expected, linelength: 45)
-  }
-
-  func testNonEmptyTokenList() throws {
-    // The C++ parse modeled as a non-empty list of unparsed tokens. The Swift
-    // parser sees through this and treats it as an attribute with a missing
-    // name and some unexpected text after `foo!` in the arguments.
-    throw XCTSkip("This is no longer a non-empty token list")
-
-    let input =
-      """
-      @(foo ! @ # bar)
-      """
-
-    assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 45)
-  }
-}