feat(object): render author/committer/tagger dates in human form

test/git/object_test.lua

@@ -134,6 +134,45 @@ t.test("read_uri opens stage-0 entry as a writable index buffer", function()
     t.eq(vim.api.nvim_buf_get_lines(buf, 0, -1, false), { "first" })
 end)
 
+t.test("M.open renders author/committer dates, not unix timestamps", function()
+    local dir = h.make_repo({ a = "first\n" })
+    local r = assert(require("git.core.repo").resolve(dir))
+
+    object.open(r, "HEAD", { split = false })
+    local author = assert(find_line(0, "author "), "expected an author line")
+    local committer =
+        assert(find_line(0, "committer "), "expected a committer line")
+    local lines = vim.api.nvim_buf_get_lines(0, 0, -1, false)
+    for _, lnum in ipairs({ author, committer }) do
+        local line = assert(lines[lnum])
+        t.truthy(
+            line:match(
+                " %u%l%l %u%l%l +%d+ %d%d:%d%d:%d%d %d%d%d%d [+-]%d%d%d%d$"
+            ),
+            "expected formatted date on: " .. line
+        )
+        t.falsy(
+            line:match(" %d%d%d%d%d%d%d%d%d%d? [+-]%d%d%d%d$"),
+            "expected no unix timestamp on: " .. line
+        )
+    end
+end)
+
+t.test("M.open renders tagger dates on annotated tags", function()
+    local dir = h.make_repo({ a = "first\n" })
+    h.git(dir, "tag", "-m", "rel", "v1")
+    local r = assert(require("git.core.repo").resolve(dir))
+
+    object.open(r, "v1", { split = false })
+    local tagger = assert(find_line(0, "tagger "), "expected a tagger line")
+    local line =
+        assert(vim.api.nvim_buf_get_lines(0, tagger - 1, tagger, false)[1])
+    t.truthy(
+        line:match(" %u%l%l %u%l%l +%d+ %d%d:%d%d:%d%d %d%d%d%d [+-]%d%d%d%d$"),
+        "expected formatted date on: " .. line
+    )
+end)
+
 t.test("open_under_cursor on a 'tree <sha>' line opens the tree", function()
     local dir = h.make_repo({ a = "first\n" })
     local r = assert(require("git.core.repo").resolve(dir))