[llvm-strings][test] Merge two closely related tests

This is a follow-up to feedback on D66015. Reviewed by: grimar Differential Revision: https://reviews.llvm.org/D67069 llvm-svn: 370643
llvm · Sep 2, 2019 · 43e9ead · 43e9ead
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diff --git a/llvm/test/tools/llvm-strings/eof-no-string.test b/llvm/test/tools/llvm-strings/eof-no-string.test
diff --git a/llvm/test/tools/llvm-strings/eof.test b/llvm/test/tools/llvm-strings/eof.test
@@ -1,5 +1,11 @@
 ## Show that llvm-strings prints the last string in the input even if no
 ## unprintable character follows it.
 
-RUN: echo -n abcdefg | llvm-strings - | FileCheck %s
-CHECK: abcdefg
+RUN: echo -n abcdefg | llvm-strings - | FileCheck %s --check-prefix=PRINT
+PRINT: abcdefg
+
+## Show that llvm-strings does not print the last string in the input if it is
+## too short and no unprintable character follows it.
+
+RUN: echo -n abc | llvm-strings - | FileCheck --allow-empty %s --check-prefix=NOPRINT
+NOPRINT-NOT: {{.}}