--- a/tests/test-run-tests.t	Sun Jun 03 17:02:38 2018 +0530
+++ b/tests/test-run-tests.t	Thu Apr 26 23:57:20 2018 +0200
@@ -1571,7 +1571,77 @@
   ..
   # Ran 2 tests, 0 skipped, 0 failed.
 
+Support running a specific test case
+
+  $ rt "test-cases-abc.t (case B)"
+  
+  --- $TESTTMP/anothertests/cases/test-cases-abc.t
+  +++ $TESTTMP/anothertests/cases/test-cases-abc.t.B.err
+  @@ -7,7 +7,7 @@
+     $ V=C
+   #endif
+     $ echo $V | sed 's/A/C/'
+  -  C
+  +  B
+   #if C
+     $ [ $V = C ]
+   #endif
+  
+  ERROR: test-cases-abc.t (case B) output changed
+  !
+  Failed test-cases-abc.t (case B): output changed
+  # Ran 1 tests, 0 skipped, 1 failed.
+  python hash seed: * (glob)
+  [1]
+
+Support running multiple test cases in the same file
+
+  $ rt "test-cases-abc.t (case B)" "test-cases-abc.t (case C)"
+  
+  --- $TESTTMP/anothertests/cases/test-cases-abc.t
+  +++ $TESTTMP/anothertests/cases/test-cases-abc.t.B.err
+  @@ -7,7 +7,7 @@
+     $ V=C
+   #endif
+     $ echo $V | sed 's/A/C/'
+  -  C
+  +  B
+   #if C
+     $ [ $V = C ]
+   #endif
+  
+  ERROR: test-cases-abc.t (case B) output changed
+  !.
+  Failed test-cases-abc.t (case B): output changed
+  # Ran 2 tests, 0 skipped, 1 failed.
+  python hash seed: * (glob)
+  [1]
+
+Support running invalid test cases
+
+  $ rt "test-cases-abc.t (case B)" "test-cases-abc.t (case D)"
+  
+  --- $TESTTMP/anothertests/cases/test-cases-abc.t
+  +++ $TESTTMP/anothertests/cases/test-cases-abc.t.B.err
+  @@ -7,7 +7,7 @@
+     $ V=C
+   #endif
+     $ echo $V | sed 's/A/C/'
+  -  C
+  +  B
+   #if C
+     $ [ $V = C ]
+   #endif
+  
+  ERROR: test-cases-abc.t (case B) output changed
+  !
+  Failed test-cases-abc.t (case B): output changed
+  # Ran 1 tests, 0 skipped, 1 failed.
+  python hash seed: * (glob)
+  [1]
+
 Test automatic pattern replacement
+==================================
 
   $ cat << EOF >> common-pattern.py
   > substitutions = [