[Test] Add a test to make sure every group has decls to print.

Author: nkcsgexi

test/IDE/print_stdlib.swift

@@ -47,8 +47,36 @@
 // RUN: %target-swift-ide-test -print-module-groups -module-to-print=Swift -source-filename %s -print-interface > %t-group.txt
 // RUN: FileCheck -check-prefix=CHECK-GROUPS1 %s < %t-group.txt
 // CHECK-GROUPS1: Module groups begin:
-// CHECK-GROUPS1-DAG: Array
-// CHECK-GROUPS1-DAG: Assert
+// CHECK-GROUPS1-DAG: Pointer
+// CHECK-GROUPS1-DAG: C
+// CHECK-GROUPS1-DAG: Protocols
+// CHECK-GROUPS1-DAG: Optional
+// CHECK-GROUPS1-DAG: Collection/Lazy Views
+// CHECK-GROUPS1-DAG: Math
+// CHECK-GROUPS1-DAG: Reflection
+// CHECK-GROUPS1-DAG: Misc
 // CHECK-GROUPS1-DAG: Collection
+// CHECK-GROUPS1-DAG: Bool
+// CHECK-GROUPS1-DAG: Assert
+// CHECK-GROUPS1-DAG: String
+// CHECK-GROUPS1-DAG: Collection/Array
+// CHECK-GROUPS1-DAG: Collection/Type-erased
 // CHECK-GROUPS1-NOT: <NULL>
-// CHECK-GROUPS1: Module groups end.
+// CHECK-GROUPS1: Module groups end.
+
+// RUN: %target-swift-ide-test -print-module -module-group "Pointer" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "C" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Protocols" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Optional" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Collection/Lazy Views" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Math" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Reflection" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Misc" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Collection" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Bool" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Assert" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "String" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Collection/Array" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+// RUN: %target-swift-ide-test -print-module -module-group "Collection/Type-erased" -synthesize-extension -module-to-print=Swift -source-filename %s -print-interface | FileCheck %s -check-prefix=CHECK-FREQUENT-WORD
+
+// CHECK-FREQUENT-WORD: ///