File

+
−local template = [[
+
−{greet!?Hi}, {name?world}!
+
−]];
+
−local expect1 = [[
+
−Hello, WORLD!
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−]];
+
−local expect2 = [[
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−Hello, world!
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−]];
+
−local expect3 = [[
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−Hi, YOU!
+
−]];
+
−local template_array = [[
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−{foo#{idx}. {item}
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−}]]
+
−local expect_array = [[
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−1. HELLO
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−2. WORLD
+
−]]
+
−local template_func_pipe = [[
+
−{foo|sort#{idx}. {item}
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−}]]
+
−local expect_func_pipe = [[
+
−1. A
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−2. B
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−3. C
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−4. D
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−]]
+
−local template_map = [[
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−{foo%{idx}: {item!}
+
−}]]
+
−local expect_map = [[
+
−FOO: bar
+
−]]
+
−local template_not = [[
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−{thing~Thing is falsy}{thing&Thing is truthy}
+
−]]
+
−local expect_not_true = [[
+
−Thing is truthy
+
−]]
+
−local expect_not_nil = [[
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−Thing is falsy
+
−]]
+
−local expect_not_false = [[
+
−Thing is falsy
+
−]]
+
−describe("util.interpolation", function ()
+
−	it("renders", function ()
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−		local render = require "util.interpolation".new("%b{}", string.upper, { sort = function (t) table.sort(t) return t end });
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−		assert.equal(expect1, render(template, { greet = "Hello", name = "world" }));
+
−		assert.equal(expect2, render(template, { greet = "Hello" }));
+
−		assert.equal(expect3, render(template, { name = "you" }));
+
−		assert.equal(expect_array, render(template_array, { foo = { "Hello", "World" } }));
+
−		assert.equal(expect_func_pipe, render(template_func_pipe, { foo = { "c", "a", "d", "b", } }));
+
−		-- assert.equal("", render(template_func_pipe, { foo = nil })); -- FIXME
+
−		assert.equal(expect_map, render(template_map, { foo = { foo = "bar" } }));
+
−		assert.equal(expect_not_true, render(template_not, { thing = true }));
+
−		assert.equal(expect_not_nil, render(template_not, { thing = nil }));
+
−		assert.equal(expect_not_false, render(template_not, { thing = false }));
+
−	end);
+
−	it("fixes #1623", function ()
+
−		local render = require "util.interpolation".new("%b{}", string.upper, { x = string.lower });
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−		assert.equal("", render("{foo?}", {  }))
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−		assert.equal("", render("{foo|x?}", {  }))
+
−	end);
+
−end);