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"use strict";
var diff = require("../diff")
exports["test diff from null"] = function(assert) {
var to = { a: 1, b: 2 }
assert.equal(diff(null, to), to, "diff null to x returns x")
assert.equal(diff(void(0), to), to, "diff undefined to x returns x")
}
exports["test diff to null"] = function(assert) {
var from = { a: 1, b: 2 }
assert.deepEqual(diff({ a: 1, b: 2 }, null),
{ a: null, b: null },
"diff x null returns x with all properties nullified")
}
exports["test diff identical"] = function(assert) {
assert.deepEqual(diff({}, {}), {}, "diff on empty objects is {}")
assert.deepEqual(diff({ a: 1, b: 2 }, { a: 1, b: 2 }), {},
"if properties match diff is {}")
assert.deepEqual(diff({ a: 1, b: { c: { d: 3, e: 4 } } },
{ a: 1, b: { c: { d: 3, e: 4 } } }), {},
"diff between identical nested hashes is {}")
}
exports["test diff delete"] = function(assert) {
assert.deepEqual(diff({ a: 1, b: 2 }, { b: 2 }), { a: null },
"missing property is deleted")
assert.deepEqual(diff({ a: 1, b: 2 }, { a: 2 }), { a: 2, b: null },
"missing property is deleted another updated")
assert.deepEqual(diff({ a: 1, b: 2 }, {}), { a: null, b: null },
"missing propertes are deleted")
assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, {}),
{ a: null, b: null },
"missing deep propertes are deleted")
assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, { b: { c: {} } }),
{ a: null, b: { c: { d: null } } },
"missing nested propertes are deleted")
}
exports["test add update"] = function(assert) {
assert.deepEqual(diff({ a: 1, b: 2 }, { b: 2, c: 3 }), { a: null, c: 3 },
"delete and add")
assert.deepEqual(diff({ a: 1, b: 2 }, { a: 2, c: 3 }), { a: 2, b: null, c: 3 },
"delete and adds")
assert.deepEqual(diff({}, { a: 1, b: 2 }), { a: 1, b: 2 },
"diff on empty objcet returns equivalen of to")
assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, { d: 3 }),
{ a: null, b: null, d: 3 },
"missing deep propertes are deleted")
assert.deepEqual(diff({ b: { c: {} }, d: null }, { a: 1, b: { c: { d: 2 } } }),
{ a: 1, b: { c: { d: 2 } } },
"missing nested propertes are deleted")
}
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