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author | Kim Alvefur <zash@zash.se> | 2020-11-05 22:31:25 +0100 |
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committer | Kim Alvefur <zash@zash.se> | 2020-11-05 22:31:25 +0100 |
commit | 238b2bfc1cdb65ae7d051c2f29c1427149317795 (patch) | |
tree | 58547de6e7795740633c1b93e67c217eb621fe8f /spec/util_ringbuffer_spec.lua | |
parent | ce3e3808f5359f481f3ea063220ba71428b26ad5 (diff) | |
parent | 48521ba1538f797f5bef64f5fe5f3a9fb6e68f7f (diff) | |
download | prosody-238b2bfc1cdb65ae7d051c2f29c1427149317795.tar.gz prosody-238b2bfc1cdb65ae7d051c2f29c1427149317795.zip |
Merge 0.11->trunk
Diffstat (limited to 'spec/util_ringbuffer_spec.lua')
-rw-r--r-- | spec/util_ringbuffer_spec.lua | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/spec/util_ringbuffer_spec.lua b/spec/util_ringbuffer_spec.lua new file mode 100644 index 00000000..633885a8 --- /dev/null +++ b/spec/util_ringbuffer_spec.lua @@ -0,0 +1,103 @@ +local rb = require "util.ringbuffer"; +describe("util.ringbuffer", function () + describe("#new", function () + it("has a constructor", function () + assert.Function(rb.new); + end); + it("can be created", function () + assert.truthy(rb.new()); + end); + it("won't create an empty buffer", function () + assert.has_error(function () + rb.new(0); + end); + end); + it("won't create a negatively sized buffer", function () + assert.has_error(function () + rb.new(-1); + end); + end); + end); + describe(":write", function () + local b = rb.new(); + it("works", function () + assert.truthy(b:write("hi")); + end); + end); + + describe(":discard", function () + local b = rb.new(); + it("works", function () + assert.truthy(b:write("hello world")); + assert.truthy(b:discard(6)); + assert.equal(5, #b); + assert.equal("world", b:read(5)); + end); + end); + + describe(":sub", function () + -- Helper function to compare buffer:sub() with string:sub() + local function test_sub(b, x, y) + local s = b:read(#b, true); + local string_result, buffer_result = s:sub(x, y), b:sub(x, y); + assert.equals(string_result, buffer_result, ("buffer:sub(%d, %s) does not match string:sub()"):format(x, y and ("%d"):format(y) or "nil")); + end + + it("works", function () + local b = rb.new(); + assert.truthy(b:write("hello world")); + assert.equals("hello", b:sub(1, 5)); + end); + + it("supports optional end parameter", function () + local b = rb.new(); + assert.truthy(b:write("hello world")); + assert.equals("hello world", b:sub(1)); + assert.equals("world", b:sub(-5)); + end); + + it("is equivalent to string:sub", function () + local b = rb.new(6); + assert.truthy(b:write("foobar")); + b:read(3); + b:write("foo"); + for i = -13, 13 do + for j = -13, 13 do + test_sub(b, i, j); + end + end + end); + end); + + describe(":byte", function () + -- Helper function to compare buffer:byte() with string:byte() + local function test_byte(b, x, y) + local s = b:read(#b, true); + local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)}; + assert.same(string_result, buffer_result, ("buffer:byte(%d, %s) does not match string:byte()"):format(x, y and ("%d"):format(y) or "nil")); + end + + it("is equivalent to string:byte", function () + local b = rb.new(6); + assert.truthy(b:write("foobar")); + b:read(3); + b:write("foo"); + test_byte(b, 1); + test_byte(b, 3); + test_byte(b, -1); + test_byte(b, -3); + for i = -13, 13 do + for j = -13, 13 do + test_byte(b, i, j); + end + end + end); + + it("works with characters > 127", function () + local b = rb.new(); + b:write(string.char(0, 140)); + local r = { b:byte(1, 2) }; + assert.same({ 0, 140 }, r); + end); + end); +end); |