1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
local match = require "luassert.match"
local spy = require "luassert.spy"
local EventEmitter = require "mason-core.EventEmitter"
local a = require "mason-core.async"
describe("EventEmitter", function()
it("should call registered event handlers", function()
local emitter = EventEmitter.init(setmetatable({}, { __index = EventEmitter }))
local my_event_handler = spy.new()
emitter:on("my:event", my_event_handler --[[@as fun()]])
emitter:emit("my:event", { table = "value" })
emitter:emit("my:event", 1337, 42)
assert.spy(my_event_handler).was_called(2)
assert.spy(my_event_handler).was_called_with(match.same { table = "value" })
assert.spy(my_event_handler).was_called_with(1337, 42)
end)
it("should call registered event handlers only once", function()
local emitter = EventEmitter.init(setmetatable({}, { __index = EventEmitter }))
local my_event_handler = spy.new()
emitter:once("my:event", my_event_handler --[[@as fun()]])
emitter:emit("my:event", { table = "value" })
emitter:emit("my:event", 1337, 42)
assert.spy(my_event_handler).was_called(1)
assert.spy(my_event_handler).was_called_with(match.same { table = "value" })
end)
it("should remove registered event handlers", function()
local emitter = EventEmitter.init(setmetatable({}, { __index = EventEmitter }))
local my_event_handler = spy.new() --[[@as fun()]]
emitter:on("my:event", my_event_handler)
emitter:once("my:event", my_event_handler)
emitter:off("my:event", my_event_handler)
emitter:emit("my:event", { table = "value" })
assert.spy(my_event_handler).was_called(0)
end)
it("should print errors in handlers", function()
spy.on(vim.api, "nvim_err_writeln")
local emitter = EventEmitter.init(setmetatable({}, { __index = EventEmitter }))
emitter:on("event", mockx.throws "My error.")
emitter:emit "event"
a.run_blocking(a.wait, vim.schedule)
assert.spy(vim.api.nvim_err_writeln).was_called(1)
assert.spy(vim.api.nvim_err_writeln).was_called_with "My error."
end)
end)
|
