From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
Add a new test-helper, 'test-tool refspec', that currently reads stdin
line-by-line and translates the refspecs using the parsing logic of
refspec_item_init() and writes them to output.
Create a test in t5511-refspec.sh that uses this helper to test several
known special cases. This includes all of the special properties of the
'struct refspec_item', including:
* force: The refspec starts with '+'.
* pattern: Each side of the refspec has a glob character ('*')
* matching: The refspec is simply the string ":".
* exact_sha1: The 'src' string is a 40-character hex string.
* negative: The refspec starts with '^' and 'dst' is NULL.
While the exact_sha1 property doesn't require special logic in
refspec_item_format, it is still tested here for completeness.
There is also the special-case refspec "@" which translates to "HEAD".
Note that if a refspec does not start with "refs/", then that is not
incorporated as part of the 'struct refspec_item'. This behavior is
confirmed by these tests. These refspecs still work in the wild because
the refs layer interprets them appropriately as branches, prepending
"refs/" or "refs/heads/" as necessary. I spent some time attempting to
insert these prefixes explicitly in parse_refspec(), but these are
several subtleties I was unable to overcome. If such a change were to be
made, then this new test in t5511-refspec.sh will need to be updated
with new output. For example, the input lines ending with "translated"
are designed to demonstrate these subtleties.
Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
Makefile | 1 +
t/helper/test-refspec.c | 44 +++++++++++++++++++++++++++++++++++++++++
t/helper/test-tool.c | 1 +
t/helper/test-tool.h | 1 +
t/t5511-refspec.sh | 41 ++++++++++++++++++++++++++++++++++++++
5 files changed, 88 insertions(+)
create mode 100644 t/helper/test-refspec.c
diff --git a/Makefile b/Makefile
index a6a73c574191..f858c9f25976 100644
--- a/Makefile
+++ b/Makefile
@@ -734,6 +734,7 @@ TEST_BUILTINS_OBJS += test-reach.o
TEST_BUILTINS_OBJS += test-read-cache.o
TEST_BUILTINS_OBJS += test-read-graph.o
TEST_BUILTINS_OBJS += test-read-midx.o
+TEST_BUILTINS_OBJS += test-refspec.o
TEST_BUILTINS_OBJS += test-ref-store.o
TEST_BUILTINS_OBJS += test-regex.o
TEST_BUILTINS_OBJS += test-repository.o
diff --git a/t/helper/test-refspec.c b/t/helper/test-refspec.c
new file mode 100644
index 000000000000..b06735ded208
--- /dev/null
+++ b/t/helper/test-refspec.c
@@ -0,0 +1,44 @@
+#include "cache.h"
+#include "parse-options.h"
+#include "refspec.h"
+#include "strbuf.h"
+#include "test-tool.h"
+
+static const char * const refspec_usage[] = {
+ N_("test-tool refspec [--fetch]"),
+ NULL
+};
+
+int cmd__refspec(int argc, const char **argv)
+{
+ struct strbuf line = STRBUF_INIT;
+ int fetch = 0;
+
+ struct option refspec_options [] = {
+ OPT_BOOL(0, "fetch", &fetch,
+ N_("enable the 'fetch' option for parsing refpecs")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, NULL, refspec_options,
+ refspec_usage, 0);
+
+ while (strbuf_getline(&line, stdin) != EOF) {
+ struct refspec_item rsi;
+ char *buf;
+
+ if (!refspec_item_init(&rsi, line.buf, fetch)) {
+ printf("failed to parse %s\n", line.buf);
+ continue;
+ }
+
+ buf = refspec_item_format(&rsi);
+ printf("%s\n", buf);
+ free(buf);
+
+ refspec_item_clear(&rsi);
+ }
+
+ strbuf_release(&line);
+ return 0;
+}
diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c
index 287aa6002307..f534ad1731a9 100644
--- a/t/helper/test-tool.c
+++ b/t/helper/test-tool.c
@@ -55,6 +55,7 @@ static struct test_cmd cmds[] = {
{ "read-cache", cmd__read_cache },
{ "read-graph", cmd__read_graph },
{ "read-midx", cmd__read_midx },
+ { "refspec", cmd__refspec },
{ "ref-store", cmd__ref_store },
{ "regex", cmd__regex },
{ "repository", cmd__repository },
diff --git a/t/helper/test-tool.h b/t/helper/test-tool.h
index 9ea4b31011dd..46a0b8850f17 100644
--- a/t/helper/test-tool.h
+++ b/t/helper/test-tool.h
@@ -44,6 +44,7 @@ int cmd__reach(int argc, const char **argv);
int cmd__read_cache(int argc, const char **argv);
int cmd__read_graph(int argc, const char **argv);
int cmd__read_midx(int argc, const char **argv);
+int cmd__refspec(int argc, const char **argv);
int cmd__ref_store(int argc, const char **argv);
int cmd__regex(int argc, const char **argv);
int cmd__repository(int argc, const char **argv);
diff --git a/t/t5511-refspec.sh b/t/t5511-refspec.sh
index be025b90f989..489bec08d570 100755
--- a/t/t5511-refspec.sh
+++ b/t/t5511-refspec.sh
@@ -93,4 +93,45 @@ test_refspec fetch "refs/heads/${good}"
bad=$(printf '\011tab')
test_refspec fetch "refs/heads/${bad}" invalid
+test_expect_success 'test input/output round trip' '
+ cat >input <<-\EOF &&
+ +refs/heads/*:refs/remotes/origin/*
+ refs/heads/*:refs/remotes/origin/*
+ refs/heads/main:refs/remotes/frotz/xyzzy
+ :refs/remotes/frotz/deleteme
+ ^refs/heads/secrets
+ refs/heads/secret:refs/heads/translated
+ refs/heads/secret:heads/translated
+ refs/heads/secret:remotes/translated
+ secret:translated
+ refs/heads/*:remotes/xxy/*
+ refs/heads*/for-linus:refs/remotes/mine/*
+ 2e36527f23b7f6ae15e6f21ac3b08bf3fed6ee48:refs/heads/fixed
+ HEAD
+ @
+ :
+ EOF
+ cat >expect <<-\EOF &&
+ +refs/heads/*:refs/remotes/origin/*
+ refs/heads/*:refs/remotes/origin/*
+ refs/heads/main:refs/remotes/frotz/xyzzy
+ :refs/remotes/frotz/deleteme
+ ^refs/heads/secrets
+ refs/heads/secret:refs/heads/translated
+ refs/heads/secret:heads/translated
+ refs/heads/secret:remotes/translated
+ secret:translated
+ refs/heads/*:remotes/xxy/*
+ refs/heads*/for-linus:refs/remotes/mine/*
+ 2e36527f23b7f6ae15e6f21ac3b08bf3fed6ee48:refs/heads/fixed
+ HEAD
+ HEAD
+ :
+ EOF
+ test-tool refspec <input >output &&
+ test_cmp expect output &&
+ test-tool refspec --fetch <input >output &&
+ test_cmp expect output
+'
+
test_done
--
gitgitgadget
