author | Matthew Wild <mwild1@gmail.com> |
Mon, 24 Aug 2020 16:18:13 +0100 | |
changeset 11049 | 8c6bace13229 |
parent 11048 | 7b720a815519 |
child 11050 | 64713f21ff0e |
permissions | -rw-r--r-- |
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util.dbuffer: dynamic string buffer
Matthew Wild <mwild1@gmail.com>
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local dbuffer = require "util.dbuffer"; |
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util.dbuffer: dynamic string buffer
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describe("util.dbuffer", function () |
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util.dbuffer: dynamic string buffer
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describe("#new", function () |
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util.dbuffer: dynamic string buffer
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it("has a constructor", function () |
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assert.Function(dbuffer.new); |
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util.dbuffer: dynamic string buffer
Matthew Wild <mwild1@gmail.com>
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end); |
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util.dbuffer: dynamic string buffer
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it("can be created", function () |
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assert.truthy(dbuffer.new()); |
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end); |
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it("won't create an empty buffer", function () |
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assert.falsy(dbuffer.new(0)); |
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end); |
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it("won't create a negatively sized buffer", function () |
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assert.falsy(dbuffer.new(-1)); |
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end); |
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end); |
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describe(":write", function () |
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local b = dbuffer.new(); |
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it("works", function () |
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assert.truthy(b:write("hi")); |
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end); |
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end); |
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|
10984
eaee72c7afbd
util.dbuffer: If no bytes parameter passed to read, return remainder of frontmost chunk
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describe(":read", function () |
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it("supports optional bytes parameter", function () |
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-- should return the frontmost chunk |
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parents:
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local b = dbuffer.new(); |
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parents:
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assert.truthy(b:write("hello")); |
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assert.truthy(b:write(" ")); |
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assert.truthy(b:write("world")); |
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assert.equal("h", b:read(1)); |
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|
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assert.equal("ello", b:read()); |
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assert.equal(" ", b:read()); |
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assert.equal("world", b:read()); |
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end); |
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end); |
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describe(":discard", function () |
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local b = dbuffer.new(); |
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it("works", function () |
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assert.truthy(b:write("hello world")); |
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assert.truthy(b:discard(6)); |
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util.dbuffer: Don't use # operator in tests, Lua 5.1 doesn't support __len
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assert.equal(5, b:length()); |
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assert.equal("world", b:read(5)); |
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end); |
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end); |
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|
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d7a403060946
util.dbuffer: Fix traceback when :collapse() is called on empty buffer
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describe(":collapse()", function () |
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it("works on an empty buffer", function () |
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local b = dbuffer.new(); |
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b:collapse(); |
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end); |
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end); |
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describe(":sub", function () |
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-- Helper function to compare buffer:sub() with string:sub() |
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local s = "hello world"; |
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local function test_sub(b, x, y) |
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local string_result, buffer_result = s:sub(x, y), b:sub(x, y); |
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assert.equals(string_result, buffer_result, ("buffer:sub(%d, %s) does not match string:sub()"):format(x, y and ("%d"):format(y) or "nil")); |
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end |
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|
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it("works", function () |
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local b = dbuffer.new(); |
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assert.truthy(b:write("hello world")); |
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assert.equals("hello", b:sub(1, 5)); |
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end); |
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|
11049
8c6bace13229
util.dbuffer: Fix :sub() not working with partially-consumed chunks (thanks Zash for test case)
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it("works after discard", function () |
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util.dbuffer: Add failing test case involving :sub after :discard
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local b = dbuffer.new(256); |
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assert.truthy(b:write("foo")); |
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assert.truthy(b:write("bar")); |
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assert.equals("foobar", b:sub(1, 6)); |
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assert.truthy(b:discard(3)) -- until the space |
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assert.equals("bar", b:sub(1, 3)); |
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end); |
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it("supports optional end parameter", function () |
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local b = dbuffer.new(); |
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assert.truthy(b:write("hello world")); |
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assert.equals("hello world", b:sub(1)); |
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assert.equals("world", b:sub(-5)); |
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end); |
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|
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it("is equivalent to string:sub", function () |
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local b = dbuffer.new(11); |
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assert.truthy(b:write(s)); |
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for i = -13, 13 do |
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for j = -13, 13 do |
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test_sub(b, i, j); |
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92 |
end |
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end |
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end); |
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end); |
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96 |
|
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describe(":byte", function () |
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-- Helper function to compare buffer:byte() with string:byte() |
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local s = "hello world" |
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local function test_byte(b, x, y) |
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local string_result, buffer_result = {s:byte(x, y)}, {b:byte(x, y)}; |
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assert.same(string_result, buffer_result, ("buffer:byte(%d, %s) does not match string:byte()"):format(x, y and ("%d"):format(y) or "nil")); |
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103 |
end |
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104 |
|
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it("is equivalent to string:byte", function () |
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local b = dbuffer.new(11); |
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assert.truthy(b:write(s)); |
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test_byte(b, 1); |
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test_byte(b, 3); |
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test_byte(b, -1); |
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test_byte(b, -3); |
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for i = -13, 13 do |
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for j = -13, 13 do |
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test_byte(b, i, j); |
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end |
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116 |
end |
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117 |
end); |
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118 |
|
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it("works with characters > 127", function () |
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local b = dbuffer.new(); |
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b:write(string.char(0, 140)); |
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122 |
local r = { b:byte(1, 2) }; |
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assert.same({ 0, 140 }, r); |
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124 |
end); |
11032
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util.dbuffer: Fix traceback when :collapse() is called on empty buffer
Matthew Wild <mwild1@gmail.com>
parents:
10984
diff
changeset
|
125 |
|
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util.dbuffer: Fix traceback when :collapse() is called on empty buffer
Matthew Wild <mwild1@gmail.com>
parents:
10984
diff
changeset
|
126 |
it("works on an empty buffer", function () |
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util.dbuffer: Fix traceback when :collapse() is called on empty buffer
Matthew Wild <mwild1@gmail.com>
parents:
10984
diff
changeset
|
127 |
local b = dbuffer.new(); |
d7a403060946
util.dbuffer: Fix traceback when :collapse() is called on empty buffer
Matthew Wild <mwild1@gmail.com>
parents:
10984
diff
changeset
|
128 |
assert.equal("", b:sub(1,1)); |
d7a403060946
util.dbuffer: Fix traceback when :collapse() is called on empty buffer
Matthew Wild <mwild1@gmail.com>
parents:
10984
diff
changeset
|
129 |
end); |
10977
39991e40d1dc
util.dbuffer: dynamic string buffer
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
130 |
end); |
39991e40d1dc
util.dbuffer: dynamic string buffer
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
131 |
end); |