eval: implement timers. vim-patch: 7.4.1578, 7.4.1831

For the moment, timers are triggered during sleep,
but not in wait-for-input modes, like press-RETURN or f_getchar()

1 files changed, 106 insertions, 0 deletions

diff --git a/test/functional/eval/timer_spec.lua b/test/functional/eval/timer_spec.lua
new file mode 100644
index 0000000000..df0a55e462
--- /dev/null
+++ b/test/functional/eval/timer_spec.lua
@@ -0,0 +1,106 @@
+local helpers = require('test.functional.helpers')
+local ok, feed, eq, eval = helpers.ok, helpers.feed, helpers.eq, helpers.eval
+local source, nvim_async, run = helpers.source, helpers.nvim_async, helpers.run
+local clear, execute, funcs = helpers.clear, helpers.execute, helpers.funcs
+
+describe('timers', function()
+  before_each(function()
+    clear()
+    source([[
+      let g:val = 0
+      func MyHandler(timer)
+        let g:val += 1
+      endfunc
+    ]])
+  end)
+
+  it('works one-shot', function()
+    execute("call timer_start(50, 'MyHandler')")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 200)
+    eq(1,eval("g:val"))
+  end)
+
+  it('works with repeat two', function()
+    execute("call timer_start(50, 'MyHandler', {'repeat': 2})")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 300)
+    eq(2,eval("g:val"))
+  end)
+
+  it('are triggered during sleep', function()
+    execute("call timer_start(50, 'MyHandler', {'repeat': 2})")
+    nvim_async("command", "sleep 10")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 300)
+    eq(2,eval("g:val"))
+  end)
+
+  it('can be started during sleep', function()
+    nvim_async("command", "sleep 10")
+    -- this also tests that remote requests works during sleep
+    eval("timer_start(50, 'MyHandler', {'repeat': 2})")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 300)
+    eq(2,eval("g:val"))
+  end)
+
+  it('are paused when event processing is disabled', function()
+    -- this is not the intended behavior, but at least there will
+    -- not be a burst of queued up callbacks
+    execute("call timer_start(50, 'MyHandler', {'repeat': 2})")
+    run(nil, nil, nil, 100)
+    local count = eval("g:val")
+    nvim_async("command", "let g:c = getchar()")
+    run(nil, nil, nil, 300)
+    feed("c")
+    local diff = eval("g:val") - count
+    ok(0 <= diff and diff <= 2)
+    eq(99, eval("g:c"))
+  end)
+
+  it('can be stopped', function()
+    local t = eval("timer_start(50, 'MyHandler', {'repeat': -1})")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 300)
+    funcs.timer_stop(t)
+    local count = eval("g:val")
+    run(nil, nil, nil, 300)
+    local count2 = eval("g:val")
+    ok(4 <= count and count <= 7)
+    -- when count is eval:ed after timer_stop this should be non-racy
+    eq(count, count2)
+  end)
+
+  it('can be stopped from the handler', function()
+    source([[
+      func! MyHandler(timer)
+        let g:val += 1
+        if g:val == 3
+          call timer_stop(a:timer)
+          " check double stop is ignored
+          call timer_stop(a:timer)
+        endif
+      endfunc
+    ]])
+    execute("call timer_start(50, 'MyHandler', {'repeat': -1})")
+    eq(0,eval("g:val"))
+    run(nil, nil, nil, 300)
+    eq(3,eval("g:val"))
+  end)
+
+  it('can have two timers', function()
+    source([[
+      let g:val2 = 0
+      func! MyHandler2(timer)
+        let g:val2 += 1
+      endfunc
+    ]])
+    execute("call timer_start(50,  'MyHandler', {'repeat': 3})")
+    execute("call timer_start(100, 'MyHandler2', {'repeat': 2})")
+    run(nil, nil, nil, 300)
+    eq(3,eval("g:val"))
+    eq(2,eval("g:val2"))
+  end)
+
+end)