test-run-tests: add tests for "#if no-false" and no-true

tests/test-run-tests.t

@@ -1,85 +1,99 b''
 Simple commands:
 
   $ echo foo
   foo
   $ printf 'oh no'
   oh no (no-eol)
   $ printf 'bar\nbaz\n' | cat
   bar
   baz
 
 Multi-line command:
 
   $ foo() {
   >     echo bar
   > }
   $ foo
   bar
 
 Return codes before inline python:
 
   $ sh -c 'exit 1'
   [1]
 
 Doctest commands:
 
   >>> print 'foo'
   foo
   $ echo interleaved
   interleaved
   >>> for c in 'xyz':
   ...     print c
   x
   y
   z
   >>> print
   
 
 Regular expressions:
 
   $ echo foobarbaz
   foobar.* (re)
   $ echo barbazquux
   .*quux.* (re)
 
 Globs:
 
   $ printf '* \\foobarbaz {10}\n'
   \* \\fo?bar* {10} (glob)
 
 Literal match ending in " (re)":
 
   $ echo 'foo (re)'
   foo (re)
 
 testing hghave
 
   $ "$TESTDIR/hghave" true
   $ "$TESTDIR/hghave" false
   skipped: missing feature: nail clipper
   [1]
   $ "$TESTDIR/hghave" no-true
   skipped: system supports yak shaving
   [1]
   $ "$TESTDIR/hghave" no-false
 
 Conditional sections based on hghave:
 
 #if true
   $ echo tested
   tested
 #else
   $ echo skipped
 #endif
 
 #if false
   $ echo skipped
 #else
   $ echo tested
   tested
 #endif
 
+#if no-false
+  $ echo tested
+  tested
+#else
+  $ echo skipped
+#endif
+
+#if no-true
+  $ echo skipped
+#else
+  $ echo tested
+  tested
+#endif
+
 Exit code:
 
   $ (exit 1) 
   [1]