Add pattern tests

Author: FantasqueX

clang/test/CodeCompletion/if-const.cpp

@@ -3,11 +3,24 @@ void test() {
   if constexpr (Flag) {
     return;
   }
-  // RUN: %clang_cc1 -fsyntax-only -std=c++17 -code-completion-at=%s:3:7 %s -o - | FileCheck -check-prefix=CHECK-CXX17 %s
-  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-at=%s:3:7 %s -o - | FileCheck -check-prefix=CHECK-CXX23 %s
-  // CHECK-CXX17: constexpr
-  // CHECK-CXX23: consteval
+  // RUN: %clang_cc1 -fsyntax-only -std=c++17 -code-completion-at=%s:3:7 %s | FileCheck -check-prefix=CHECK-CXX17 %s
+  // RUN: %clang_cc1 -fsyntax-only -std=c++17 -code-completion-patterns -code-completion-at=%s:3:7 %s | FileCheck -check-prefix=CHECK-PATTERN-CXX17 %s
+  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-at=%s:3:7 %s | FileCheck -check-prefix=CHECK-CXX23 %s
+  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-patterns -code-completion-at=%s:3:7 %s | FileCheck -check-prefix=CHECK-PATTERN-CXX23 %s
+  // CHECK-CXX17: COMPLETION: constexpr
+  // CHECK-PATTERN-CXX17: COMPLETION: Pattern : constexpr (<#condition#>) {
+  // CHECK-PATTERN-CXX17: <#statements#>
+  // CHECK-PATTERN-CXX17: }
+  // CHECK-CXX23: COMPLETION: consteval
+  // CHECK-PATTERN-CXX23: COMPLETION: Pattern : consteval {
+  // CHECK-PATTERN-CXX23: <#statements#>
+  // CHECK-PATTERN-CXX23: }
   if !c
-  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-at=%s:10:8 %s -o - | FileCheck -check-prefix=CHECK-CXX23-NOT %s
-  // CHECK-CXX23-NOT: consteval
+  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-at=%s:18:8 %s -o - | FileCheck -check-prefix=CHECK-CXX23-EXCLAIM %s
+  // RUN: %clang_cc1 -fsyntax-only -std=c++23 -code-completion-patterns -code-completion-at=%s:18:8 %s -o - | FileCheck -check-prefix=CHECK-PATTERN-CXX23-EXCLAIM %s
+  // CHECK-CXX23-EXCLAIM: COMPLETION: consteval
+  // CHECK-CXX23-EXCLAIM-NOT: constexpr
+  // CHECK-PATTERN-CXX23-EXCLAIM: COMPLETION: Pattern : consteval {
+  // CHECK-PATTERN-CXX23-EXCLAIM: <#statements#>
+  // CHECK-PATTERN-CXX23-EXCLAIM: }
 }