mirror of
https://github.com/1bardesign/batteries.git
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5fa80ca97c
Replace copy with shallow_copy, deep_copy. Replace overlay with shallow_overlay, deep_overlay. Significant rewrite of these functions and their semantics to update to the note above them. Add corresponding tests.
119 lines
2.6 KiB
Lua
119 lines
2.6 KiB
Lua
-- Run this file with testy:
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-- testy.lua tests.lua
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-- testy sets `...` to "module.test", so ignore that and use module top-level paths.
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package.path = package.path .. ";../?.lua"
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local assert = require("batteries.assert")
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local tablex = require("batteries.tablex")
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-- tablex {{{
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local function test_shallow_copy()
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local x,r
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x = { a = 1, b = 2, c = 3 }
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r = tablex.shallow_copy(x)
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assert:equal(r.a, 1)
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assert:equal(r.b, 2)
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assert:equal(r.c, 3)
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x = { a = { b = { 2 }, c = { 3 }, } }
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r = tablex.shallow_copy(x)
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assert:equal(r.a, x.a)
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end
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local function test_deep_copy()
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local x,r
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x = { a = 1, b = 2, c = 3 }
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r = tablex.deep_copy(x)
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assert:equal(r.a, 1)
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assert:equal(r.b, 2)
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assert:equal(r.c, 3)
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x = { a = { b = { 2 }, c = { 3 }, } }
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r = tablex.deep_copy(x)
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assert(r.a ~= x.a)
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assert:equal(r.a.b[1], 2)
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assert:equal(r.a.c[1], 3)
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end
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local function test_shallow_overlay()
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local x,y,r
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x = { a = 1, b = 2, c = 3 }
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y = { c = 8, d = 9 }
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r = tablex.shallow_overlay(x, y)
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assert(
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tablex.deep_equal(
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r,
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{ a = 1, b = 2, c = 8, d = 9 }
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)
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)
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x = { b = { 2 }, c = { 3 }, }
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y = { c = { 8 }, d = { 9 }, }
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r = tablex.shallow_overlay(x, y)
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assert(r.b == x.b)
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assert(r.c == y.c)
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assert(r.d == y.d)
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assert(
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tablex.deep_equal(
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r,
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{ b = { 2 }, c = { 8 }, d = { 9 }, }))
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end
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local function test_deep_overlay()
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local x,y,r
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x = { a = 1, b = 2, c = 3 }
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y = { c = 8, d = 9 }
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r = tablex.deep_overlay(x, y)
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assert(
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tablex.deep_equal(
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r,
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{ a = 1, b = 2, c = 8, d = 9 }))
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x = { a = { b = { 2 }, c = { 3 }, } }
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y = { a = { c = { 8 }, d = { 9 }, } }
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r = tablex.deep_overlay(x, y)
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assert(
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tablex.deep_equal(
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r,
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{ a = { b = { 2 }, c = { 8 }, d = { 9 }, } }))
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end
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local function test_shallow_equal()
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local x,y
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x = { a = { b = { 2 }, } }
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y = { a = { b = { 2 }, } }
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assert(not tablex.shallow_equal(x, y))
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x = { 3, 4, "hello", [20] = "end", }
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y = { 3, 4, "hello", [20] = "end", }
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assert(tablex.shallow_equal(x, y))
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local z = { 1, 2, }
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x = { a = z, b = 10, c = true, }
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y = { a = z, b = 10, c = true, }
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assert(tablex.shallow_equal(x, y))
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assert(tablex.shallow_equal(y, x))
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end
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local function test_deep_equal()
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local x,y
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x = { a = { b = { 2 }, c = { 3 }, } }
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y = { a = { b = { 2 }, c = { 3 }, } }
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assert(tablex.deep_equal(x, y))
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x = { a = { b = { 1, 2 }, c = { 3 }, } }
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y = { a = { c = { 3 }, b = { [2] = 2, [1] = 1 }, } }
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assert(tablex.deep_equal(x, y))
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assert(tablex.deep_equal(y, x))
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x = { a = { b = { 2 }, c = { 3 }, 2 } }
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y = { a = { b = { 2 }, c = { 3 }, } }
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assert(not tablex.deep_equal(x, y))
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assert(not tablex.deep_equal(y, x))
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end
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