[RFC] Merge mi-cli.exp and mi2-cli.exp

[Yao Qi <yao@codesourcery.com>]

Hi,
When trying to add some new tests in mi-cli.exp, the same stuff should
be added to mi2-cli.exp as well.  Then, looks most part of two tests are
identical, and I start to think about why don't merge them together.

In 2003, Andrew copied mi-*.exp to mi2-*.exp in this patch,

  [patch,6.0,rfc,rfa:doco] Finish "mi2"/"mi3" rollover
  http://sourceware.org/ml/gdb-patches/2003-08/msg00044.html

Unless I miss something, the intention of copying tests here is to test
both '-i=mi' and '-i=mi2' respectively.  However, this duplicates the code,
and increase the effort to maintain, IMO.

Sometimes, people may only update one of two files, and keep them un-sync'ed.
  http://sourceware.org/ml/gdb-patches/2009-03/msg00172.html
  http://sourceware.org/ml/gdb-patches/2009-02/msg00278.html

I am wondering if we can get rid of mi2-cli.exp, and exercise MI with
different MIFLAGS in a single mi-cli.exp.  This is what this patch does.
I don't re-indent the code to make patch readable.  WDYT?  If it is
OK, I'll post a full patch with code indentation and removing
mi2-cli.exp.

I realize other mi-foo.exp and mi2-foo.exp may have the same issue,
but I don't examine the difference of them.  If it is the right way
to go, we can get rid of mi2-foo.exp gradually.

gdb/testsuite:

2012-08-31  Yao Qi  <yao@codesourcery.com>

	* lib/mi-support.exp (mi_run_test_with_miflags): New.
	* gdb.mi/mi-cli.exp (test_mi_cli): New.  Move tests into this
	proc.
	Invoke mi_run_test_with_miflags.
---
 gdb/testsuite/gdb.mi/mi-cli.exp  |   19 +++++++++++++------
 gdb/testsuite/lib/mi-support.exp |   12 ++++++++++++
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/gdb/testsuite/gdb.mi/mi-cli.exp b/gdb/testsuite/gdb.mi/mi-cli.exp
index f487cbd..fc6229c 100644
--- a/gdb/testsuite/gdb.mi/mi-cli.exp
+++ b/gdb/testsuite/gdb.mi/mi-cli.exp
@@ -20,12 +20,6 @@
 # handlers, etc.
 
 load_lib mi-support.exp
-set MIFLAGS "-i=mi"
-
-gdb_exit
-if [mi_gdb_start] {
-    continue
-}
 
 standard_testfile basics.c
 
@@ -34,6 +28,15 @@ if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {deb
      return -1
 }
 
+proc test_mi_cli { } {
+    global binfile
+    global async
+
+gdb_exit
+if [mi_gdb_start] {
+    continue
+}
+
 mi_gdb_test "-interpreter-exec" \
   {\^error,msg="-interpreter-exec: Usage: -interpreter-exec interp command"} \
   "-interpreter-exec with no arguments"
@@ -212,4 +215,8 @@ mi_gdb_test "888-interpreter-exec console \"set \$pc=0x0\"" \
   "-interpreter-exec console \"\""
 
 mi_gdb_exit
+}
+
+mi_run_test_with_miflags test_mi_cli
+
 return 0
diff --git a/gdb/testsuite/lib/mi-support.exp b/gdb/testsuite/lib/mi-support.exp
index 9de27dd..2ac8ca0 100644
--- a/gdb/testsuite/lib/mi-support.exp
+++ b/gdb/testsuite/lib/mi-support.exp
@@ -36,6 +36,18 @@ set library_loaded_re "=library-loaded\[^\n\]+\"\r\n(?:$gdbindex_warning_re)?"
 set breakpoint_re "=(?:breakpoint-created|breakpoint-deleted)\[^\n\]+\"\r\n"
 
 #
+# Run TEST_PROC with one argument which is the name of MI interpreter.
+#
+proc mi_run_test_with_miflags { test_proc } {
+    foreach mi_interp { "mi" "mi1" "mi2" "mi3" } {
+	set MIFLAGS "-i=${mi_interp}"
+	with_test_prefix "$mi_interp" {
+	    $test_proc
+	}
+    }
+}
+
+#
 # mi_gdb_exit -- exit the GDB, killing the target program if necessary
 #
 proc mi_gdb_exit {} {
-- 
1.7.7.6