Address code review comments

Author: AmrDeveloper

llvm/test/tools/llvm-objcopy/ELF/dump-section-directory-not-exists.test

@@ -64,3 +64,9 @@ ProgramHeaders:
 # RUN: not llvm-objcopy --dump-section .text= %t /dev/null 2>&1 | FileCheck %s --check-prefix=ERR2
 
 # ERR2: error: bad format for --dump-section, expected section=file
+
+# RUN: not llvm-objcopy --dump-section .text=not_exists/text-section %t 2>&1 \
+# RUN:   | FileCheck -DMSG=%errc_ENOENT %s -DINPUT=%t --check-prefix=NO-SUCH-PATH
+# NO-SUCH-PATH: error: 'not_exists/text-section': [[MSG]]
+
+

llvm/test/tools/llvm-objcopy/ELF/dump-section.test

@@ -21,6 +21,10 @@
 # RUN:   | FileCheck %s -DINPUT=%t --check-prefix=NO-SUCH-SECTION
 # NO-SUCH-SECTION: error: '[[INPUT]]': section '__TEXT,__foo' not found
 
+# RUN: not llvm-objcopy --dump-section __TEXT,__text=not_exists/text-section %t 2>&1 \
+# RUN:   | FileCheck -DMSG=%errc_ENOENT %s -DINPUT=%t --check-prefix=NO-SUCH-PATH
+# NO-SUCH-PATH: error: 'not_exists/text-section': [[MSG]]
+
 --- !mach-o
 FileHeader:
   magic:           0xFEEDFACF

llvm/test/tools/llvm-objcopy/MachO/dump-section-directory-not-exists.test

@@ -28,6 +28,10 @@
 
 # REMOVED-NOT: producers
 
+# RUN: not llvm-objcopy --dump-section producers=not_exists/text-section %t 2>&1 \
+# RUN:   | FileCheck -DMSG=%errc_ENOENT %s -DINPUT=%t --check-prefix=NO-SUCH-PATH
+# NO-SUCH-PATH: error: 'not_exists/text-section': [[MSG]]
+
 --- !WASM
 FileHeader:
   Version: 0x00000001