diff options
| -rw-r--r-- | spec/util_dbuffer_spec.lua | 12 | ||||
| -rw-r--r-- | util/dbuffer.lua | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/spec/util_dbuffer_spec.lua b/spec/util_dbuffer_spec.lua index c4fa22b2..b7f80dc9 100644 --- a/spec/util_dbuffer_spec.lua +++ b/spec/util_dbuffer_spec.lua @@ -46,6 +46,13 @@ describe("util.dbuffer", function () end); end); + describe(":collapse()", function () + it("works on an empty buffer", function () + local b = dbuffer.new(); + b:collapse(); + end); + end); + describe(":sub", function () -- Helper function to compare buffer:sub() with string:sub() local s = "hello world"; @@ -106,5 +113,10 @@ describe("util.dbuffer", function () local r = { b:byte(1, 2) }; assert.same({ 0, 140 }, r); end); + + it("works on an empty buffer", function () + local b = dbuffer.new(); + assert.equal("", b:sub(1,1)); + end); end); end); diff --git a/util/dbuffer.lua b/util/dbuffer.lua index 63dca750..9ec40eb9 100644 --- a/util/dbuffer.lua +++ b/util/dbuffer.lua @@ -142,7 +142,7 @@ function dbuffer_methods:collapse(bytes) local front_chunk = self.items:peek(); - if #front_chunk - self.front_consumed >= bytes then + if not front_chunk or #front_chunk - self.front_consumed >= bytes then return; end |