[PATCH v2 35/36] Guile extension language: error tests

Doug Evans xdje42@gmail.com
Mon Jan 20 21:54:00 GMT 2014


This patch adds some tests for error conditions.

Changes from v1:
- improve exception backtrace printing test

2014-01-20  Doug Evans  <xdje42@gmail.com>

	testsuite/
	* gdb.guile/scm-error.exp: New file.
	* gdb.guile/scm-error.scm: New file.

diff --git a/gdb/testsuite/gdb.guile/scm-error.exp b/gdb/testsuite/gdb.guile/scm-error.exp
new file mode 100644
index 0000000..b5a1028
--- /dev/null
+++ b/gdb/testsuite/gdb.guile/scm-error.exp
@@ -0,0 +1,117 @@
+# Copyright (C) 2010-2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test various error conditions.
+
+set testfile "scm-error"
+
+load_lib gdb-guile.exp
+
+# Start with a fresh gdb.
+gdb_exit
+gdb_start
+
+# Skip all tests if Guile scripting is not enabled.
+if { [skip_guile_tests] } { continue }
+
+# Test error while loading .scm.
+
+# Give the files a new name so we don't clobber the real one if
+# objfile == srcdir.
+set remote_guile_file_1 [gdb_remote_download host \
+			     ${srcdir}/${subdir}/${testfile}-1.scm \
+			     ${subdir}/t-${testfile}-1.scm]
+set remote_guile_file_2 [gdb_remote_download host \
+			     ${srcdir}/${subdir}/${testfile}-2.scm \
+			     ${subdir}/t-${testfile}-2.scm]
+
+gdb_test "source $remote_guile_file_1" \
+    "(ERROR: )?In procedure \[+\]: Wrong type: #f.*" \
+    "error loading scm file caught"
+
+gdb_test "p 1" " = 1" "no delayed error"
+
+# Test setting/showing the various states for "guile print-stack".
+
+gdb_test "show guile print-stack" \
+    "The mode of Guile exception printing on error is \"message\".*" \
+    "test print-stack show setting of default"
+gdb_test_no_output "set guile print-stack full" \
+    "test print-stack full setting"
+gdb_test "show guile print-stack" \
+    "The mode of Guile exception printing on error is \"full\".*" \
+    "test print-stack show setting to full"
+gdb_test_no_output "set guile print-stack none" \
+    "test print-stack none setting"
+gdb_test "show guile print-stack" \
+    "The mode of Guile exception printing on error is \"none\".*" \
+    "test print-stack show setting to none"
+# Reset back to default, just in case.
+gdb_test_no_output "set guile print-stack message" \
+    "reset print-stack to default, post set/show tests"
+
+# Test "set guile print-stack none".
+
+gdb_test_no_output "set guile print-stack none" \
+    "set print-stack to none, for error test"
+
+set test_name "no error printed"
+set command "guile (define x doesnt-exist)"
+gdb_test_multiple $command $test_name {
+    -re "Backtrace.*$gdb_prompt $" { fail $test_name }
+    -re "ERROR.*$gdb_prompt $"     { fail $test_name }
+    -re "$gdb_prompt $"            { pass $test_name }
+}
+
+# Test "set guile print-stack message".
+
+gdb_test_no_output "set guile print-stack message" \
+    "set print-stack to message, for error test"
+
+set test_name "error message printed"
+set command "guile (define x doesnt-exist)"
+gdb_test_multiple $command $test_name {
+    -re "Backtrace.*$gdb_prompt $" { fail $test_name }
+    -re "ERROR.*$gdb_prompt $"     { pass $test_name }
+}
+
+# Test "set guile print-stack full".
+
+gdb_scm_test_silent_cmd "source $remote_guile_file_2" ""
+
+gdb_test_no_output "set guile print-stack full" \
+    "set print-stack to full, for backtrace test"
+
+gdb_test "guile (define x (top-func 42))" \
+    "Guile Backtrace:.*top-func 42.*middle-func 42.*bottom-func 42.*" \
+    "backtrace printed"
+
+# Verify gdb-specific errors are printed properly.
+# i.e., each gdb error is registered to use init.scm:%error-printer.
+
+gdb_test_no_output "set guile print-stack message" \
+    "set print-stack to message, for error printing tests"
+
+gdb_test "guile (throw 'gdb:error \"subr\" \"misc error: ~a\" (list 42))" \
+    "ERROR: In procedure subr: misc error: 42.*"
+
+gdb_test "guile (throw 'gdb:invalid-object-error \"subr\" \"invalid object error: ~a\" (list 42))" \
+    "ERROR: In procedure subr: invalid object error: 42.*"
+
+gdb_test "guile (throw 'gdb:memory-error \"subr\" \"memory error: ~a\" (list 42))" \
+    "ERROR: In procedure subr: memory error: 42.*"
+
+gdb_test "guile (throw 'gdb:pp-type-error \"subr\" \"pp-type error: ~a\" (list 42))" \
+    "ERROR: In procedure subr: pp-type error: 42.*"
diff --git a/gdb/testsuite/gdb.guile/scm-error-1.scm b/gdb/testsuite/gdb.guile/scm-error-1.scm
new file mode 100644
index 0000000..a68f491
--- /dev/null
+++ b/gdb/testsuite/gdb.guile/scm-error-1.scm
@@ -0,0 +1,19 @@
+;; Copyright (C) 2014 Free Software Foundation, Inc.
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(use-modules (gdb))
+
+;; An intentional error to test error handling when loading a file.
+(define foo (+ 42 #f))
diff --git a/gdb/testsuite/gdb.guile/scm-error-2.scm b/gdb/testsuite/gdb.guile/scm-error-2.scm
new file mode 100644
index 0000000..87a7ee5
--- /dev/null
+++ b/gdb/testsuite/gdb.guile/scm-error-2.scm
@@ -0,0 +1,30 @@
+;; Copyright (C) 2014 Free Software Foundation, Inc.
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(use-modules (gdb))
+
+;; Create a set of functions to call, with the last one having an error,
+;; so we can test backtrace printing.
+
+(define foo #f)
+
+(define (top-func x)
+  (+ (middle-func x) 1))
+
+(define (middle-func x)
+  (+ (bottom-func x) 1))
+
+(define (bottom-func x)
+  (+ x foo))



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