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4744a744f0
When calling join with e.g. arguments (nil, {"a"}), then everything past
the nil was ignored, because the code internally used ipairs() to
iterate over the arguments and this stops at the first nil it
encounters.
Fix this by using select() to iterate over the arguments.
This also adds a unit test for this problem.
Signed-off-by: Uli Schlachter <psychon@znc.in>
51 lines
1.6 KiB
Lua
51 lines
1.6 KiB
Lua
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local gtable = require("gears.table")
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describe("gears.table", function()
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it("table.keys_filter", function()
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local t = { "a", 1, function() end, false}
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assert.is.same(gtable.keys_filter(t, "number", "function"), { 2, 3 })
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end)
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it("table.reverse", function()
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local t = { "a", "b", c = "c", "d" }
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assert.is.same(gtable.reverse(t), { "d", "b", "a", c = "c" })
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end)
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describe("table.iterate", function()
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it("no filter", function()
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local t = { "a", "b", c = "c", "d" }
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local f = gtable.iterate(t, function() return true end)
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assert.is.equal(f(), "a")
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assert.is.equal(f(), "b")
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assert.is.equal(f(), "d")
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assert.is.equal(f(), nil)
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assert.is.equal(f(), nil)
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end)
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it("b filter", function()
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local t = { "a", "b", c = "c", "d" }
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local f = gtable.iterate(t, function(i) return i == "b" end)
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assert.is.equal(f(), "b")
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assert.is.equal(f(), nil)
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assert.is.equal(f(), nil)
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end)
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it("with offset", function()
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local t = { "a", "b", c = "c", "d" }
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local f = gtable.iterate(t, function() return true end, 2)
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assert.is.equal(f(), "b")
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assert.is.equal(f(), "d")
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assert.is.equal(f(), "a")
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assert.is.equal(f(), nil)
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assert.is.equal(f(), nil)
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end)
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end)
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describe("table.join", function()
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it("nil argument", function()
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local t = gtable.join({"a"}, nil, {"b"})
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assert.is.same(t, {"a", "b"})
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end)
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end)
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end)
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