[Patch v5 2/8] test: add support for compiling and running C snippets

diff --git a/20/dfe9796f410399a1ab70563a17a0f7c5a7d532 b/20/dfe9796f410399a1ab70563a17a0f7c5a7d532
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+++ b/20/dfe9796f410399a1ab70563a17a0f7c5a7d532
@@ -0,0 +1,112 @@
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+From: David Bremner <david@tethera.net>\r
+To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org\r
+Subject: [Patch v5 2/8] test: add support for compiling and running C snippets\r
+Date: Tue, 24 Mar 2015 09:19:40 -0400\r
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+\r
+This is to limit the copy-pasta involved in running C tests. I decided\r
+to keep things simple and not try to provide an actual C skeleton.\r
+\r
+The setting of LD_LIBRARY_PATH is to force using the built libnotmuch\r
+rather than any potential system one.\r
+---\r
+ test/README      |  5 +++++\r
+ test/test-lib.sh | 15 +++++++++++++++\r
+ 2 files changed, 20 insertions(+)\r
+\r
+diff --git a/test/README b/test/README\r
+index 81a1c82..5b40474 100644\r
+--- a/test/README\r
++++ b/test/README\r
+@@ -84,6 +84,11 @@ the tests in one of the following ways.\r
+       TEST_EMACS=my-special-emacs TEST_EMACSCLIENT=my-emacsclient ./emacs\r
+       make test TEST_EMACS=my-special-emacs TEST_EMACSCLIENT=my-emacsclient\r
+ \r
++Some tests may require a c compiler. You can choose the name and flags similarly \r
++to with emacs, e.g.\r
++\r
++     make test TEST_CC=gcc TEST_CFLAGS="-g -O2"\r
++     \r
+ Quiet Execution\r
+ ---------------\r
+ \r
+diff --git a/test/test-lib.sh b/test/test-lib.sh\r
+index 133fbe4..fdb84ea 100644\r
+--- a/test/test-lib.sh\r
++++ b/test/test-lib.sh\r
+@@ -73,6 +73,8 @@ if [[ ( -n "$TEST_EMACS" && -z "$TEST_EMACSCLIENT" ) || \\r
+ fi\r
+ TEST_EMACS=${TEST_EMACS:-${EMACS:-emacs}}\r
+ TEST_EMACSCLIENT=${TEST_EMACSCLIENT:-emacsclient}\r
++TEST_CC=${TEST_CC:-cc}\r
++TEST_CFLAGS=${TEST_CFLAGS:-"-g -O0"}\r
+ \r
+ # Protect ourselves from common misconfiguration to export\r
+ # CDPATH into the environment\r
+@@ -1161,6 +1163,19 @@ test_python() {\r
+               | $cmd -\r
+ }\r
+ \r
++test_C () {\r
++    exec_file="test${test_count}"\r
++    test_file="${exec_file}.c"\r
++    cat > ${test_file}\r
++    export LD_LIBRARY_PATH=${TEST_DIRECTORY}/../lib\r
++    ${TEST_CC} ${TEST_CFLAGS} -I${TEST_DIRECTORY}/../lib -o ${exec_file} ${test_file} -L${TEST_DIRECTORY}/../lib/ -lnotmuch -ltalloc\r
++    echo "== stdout ==" > OUTPUT.stdout\r
++    echo "== stderr ==" > OUTPUT.stderr\r
++    ./${exec_file} "$@" 1>>OUTPUT.stdout 2>>OUTPUT.stderr\r
++    sed "s,$(pwd),CWD,"  OUTPUT.stdout OUTPUT.stderr > OUTPUT\r
++}\r
++\r
++\r
+ # Creates a script that counts how much time it is executed and calls\r
+ # notmuch.  $notmuch_counter_command is set to the path to the\r
+ # generated script.  Use notmuch_counter_value() function to get the\r
+-- \r
+2.1.4\r
+\r