feat: update Cargo.lock int Rust projects

If we update Cargo.toml, but not Cargo.lock, and Cargo.lock is in git,
when cargo publish will refuse to publish, because the files are out
of sync.

1 files changed, 14 insertions, 0 deletions

diff --git a/subplot/bumper.py b/subplot/bumper.py
index e340927..3edad5e 100644
--- a/subplot/bumper.py
+++ b/subplot/bumper.py
@@ -94,3 +94,17 @@ def git_working_tree_is_clean(ctx, dirname=None):
     runcmd_exit_code_is_zero(ctx)
     output = runcmd_get_stdout(ctx)
     assert_eq(output, "")
+
+
+def file_is_newer_than_other_file(ctx, file1=None, file2=None):
+    assert os.path.getmtime(file1) > os.path.getmtime(file2)
+
+
+def file_is_in_git(ctx, filename=None):
+    runcmd_run = globals()["runcmd_run"]
+    runcmd_exit_code_is_zero = globals()["runcmd_exit_code_is_zero"]
+
+    dirname = os.path.dirname(filename) or "."
+    basename = os.path.basename(filename)
+    runcmd_run(ctx, ["git", "blame", basename], cwd=dirname)
+    runcmd_exit_code_is_zero(ctx)