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-defmodule RevisionTest do
- use CouchTestCase
-
- @moduletag :conflicts
- @moduletag kind: :single_node
-
- @moduledoc """
- Test CouchDB conflicts
- This is a port of conflicts.js
- (but is arguably more focused on revisions than conflicts)
- """
-
- setup context do
- # Generate a doc with _rev field for each test
- doc = %{_id: "doc-1", a: 1, b: 1}
- doc = rev(doc, put(context[:db_name], doc))
- %{doc: doc}
- end
-
- @tag :with_db
- test "multiple updates with same _rev raise conflict errors", context do
- db = context[:db_name]
- doc = context[:doc]
- # doc and doc2 have same _rev
- doc2 = %{doc | a: 2, b: 2}
- # doc updated with new _rev
- _doc = rev(doc, put(db, doc))
-
- retry_until(fn ->
- assert_conflict(Couch.put("/#{db}/#{doc2._id}", body: doc2))
-
- resp = Couch.get("/#{db}/_changes")
- assert length(resp.body["results"]) == 1
-
- doc2 = Map.delete(doc2, :_rev)
- assert_conflict(Couch.put("/#{db}/#{doc2._id}", body: doc2))
- end)
- end
-
- @tag :with_db
- test "mismatched rev in body and query string returns error", context do
- db = context[:db_name]
- doc = context[:doc]
- resp = Couch.put("/#{db}/#{doc._id}?rev=1-foobar", body: doc)
-
- expected_reason =
- "Document rev from request body and query string " <> "have different values"
-
- assert_bad_request(resp, expected_reason)
- end
-
- @tag :with_db
- test "mismatched rev in body and etag returns error", context do
- opts = [body: context[:doc], headers: [{:"If-Match", "1-foobar"}]]
- resp = Couch.put("/#{context[:db_name]}/foobar", opts)
- expected_reason = "Document rev and etag have different values"
- assert_bad_request(resp, expected_reason)
- end
-
- @tag :with_db
- test "`new_edits: false` prevents bulk updates (COUCHDB-1178)", context do
- db = context[:db_name]
-
- ddoc = %{_id: "_design/couchdb-1178", validate_doc_update: "function(){}"}
- assert put(db, ddoc)["ok"] == true
-
- r0 = %{_id: "doc", val: "r0"}
- r1 = %{_id: "doc", val: "r1", _rev: "1-47f3268e7546965196b57572099f4372"}
- r2 = %{_id: "doc", val: "r2", _rev: "2-1d8171ab3a91475cfece749291e6f897"}
- r3 = %{_id: "doc", val: "r3", _rev: "3-3fb0a342d2ce092fdcc77856dbe8a2ef"}
- assert put(db, r0)["ok"] == true
- assert put(db, r1)["ok"] == true
- assert put(db, r2)["ok"] == true
- # N.b. that we *do not* put r3
-
- expected = %{
- "_id" => "doc",
- "_rev" => r3._rev,
- "_revisions" => %{
- "ids" => for(r <- [r3._rev, r2._rev, r1._rev], do: suffix(r)),
- "start" => 3
- },
- "val" => r2.val
- }
-
- assert Couch.get("/#{db}/doc?revs=true").body == expected
-
- opts = [body: %{docs: [r3, r2, r1], new_edits: false}]
- assert Couch.post("/#{db}/_bulk_docs", opts).body == []
- end
-
- defp put(db, doc) do
- Couch.put("/#{db}/#{doc._id}", body: doc).body
- end
-
- defp suffix(rev) do
- hd(tl(String.split(rev, "-")))
- end
-
- defp assert_conflict(resp) do
- assert resp.status_code == 409
- assert resp.body["error"] == "conflict"
- assert resp.body["reason"] == "Document update conflict."
- end
-
- defp assert_bad_request(resp, reason) do
- assert resp.status_code == 400
- assert resp.body["error"] == "bad_request"
- assert resp.body["reason"] == reason
- end
-end