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liza/test/bucket/delta.ts

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/**
* Test the delta generated from two key/value stores
*
* Copyright (C) 2010-2019 R-T Specialty, LLC.
*
* This file is part of liza.
*
* liza is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
import {
createDelta as sutCreate,
applyDelta as sutApply,
Kv,
DeltaResult,
} from "../../src/bucket/delta";
import { expect, use as chai_use } from 'chai';
chai_use( require( 'chai-as-promised' ) );
interface SutCreateTestCase<T>
{
label: string;
src_data: T;
dest_data: T;
expected: DeltaResult<T>;
}
interface SutApplyTestCase<T>
{
label: string;
bucket: T;
delta: DeltaResult<T>;
expected: T;
}
describe( 'Delta', () =>
{
describe( '#createDelta', () =>
{
( <SutCreateTestCase<Kv<string>>[]>[
{
label: "No changes are made, key is dropped",
src_data: { foo: [ 'bar', 'baz' ] },
dest_data: { foo: [ 'bar', 'baz' ] },
expected: {},
},
{
label: "Only the unchanged key is dropped",
src_data: { foo: [ 'bar', 'baz' ], bar: [ 'qwe' ] },
dest_data: { foo: [ 'bar', 'baz' ], bar: [ 'asd' ] },
expected: { bar: [ 'asd' ] },
},
{
label: "Changed values are updated by index with old value",
src_data: { foo: [ "bar", "baz", "quux" ] },
dest_data: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
expected: { foo: [ undefined, "quuux", null ], moo: [ "cow" ] },
},
{
label: "The keys are null when they don't exist in first set",
src_data: {},
dest_data: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
expected: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
},
{
label: "Removed keys in new set show up",
src_data: { foo: [ "bar" ] },
dest_data: {},
expected: { foo: null },
},
{
label: "Indexes after a null terminator aren't included",
src_data: { foo: [ "one", "two", "three", "four" ] },
dest_data: { foo: [ "one", "done" ] },
expected: { foo: [ undefined, "done", null ] },
},
{
label: "Consider nested arrays to be scalar values",
src_data: { foo: [ [ "one" ], [ "two", "three" ] ] },
dest_data: { foo: [ [ "one" ], [ "two" ] ] },
expected: { foo: [ undefined, [ "two" ] ] },
},
{
label: "Don't evaluate zeros as falsy",
src_data: { foo: [ 0 ] },
dest_data: { foo: [ 0 ] },
expected: {},
},
{
label: "Don't evaluate empty strings as falsy",
src_data: { foo: [ '' ] },
dest_data: { foo: [ '' ] },
expected: {},
},
] ).forEach( ( { label, src_data, dest_data, expected } ) =>
{
it( label, () =>
{
expect( sutCreate( src_data, dest_data ) )
.to.deep.equal( expected );
} );
} );
} );
describe( '#applyDelta', () =>
{
( <SutApplyTestCase<Kv<string>>[]>[
{
label: "Empty delta changes nothing",
bucket: { foo: [ 'bar', 'baz' ] },
delta: {},
expected: { foo: [ 'bar', 'baz' ] },
},
{
label: "Field not in delta is unchanged",
bucket: { foo: [ 'bar', 'baz' ], bar: [ 'qwe' ] },
delta: { bar: [ 'asd' ] },
expected: { foo: [ 'bar', 'baz' ], bar: [ 'asd' ] },
},
{
label: "Undefined doesn't affect its corresponding index",
bucket: { foo: [ "bar", "baz", "quux" ] },
delta: { foo: [ undefined, "quuux", null ], moo: [ "cow" ] },
expected: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
},
{
label: "Delta applys correctly on empty bucket",
bucket: {},
delta: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
expected: { foo: [ "bar", "quuux" ], moo: [ "cow" ] },
},
{
label: "Keys are removed properly",
bucket: { foo: [ "bar" ] },
delta: { foo: null },
expected: {},
},
{
label: "Indexes after a null terminator aren't included",
bucket: { foo: [ "one", "two", "three", "four" ] },
delta: { foo: [ undefined, "done", null ] },
expected: { foo: [ "one", "done" ] },
},
{
label: "Consider nested arrays to be scalar values",
bucket: { foo: [ [ "one" ], [ "two", "three" ] ] },
delta: { foo: [ undefined, [ "two" ] ] },
expected: { foo: [ [ "one" ], [ "two" ] ] },
},
{
label: "Don't evaluate zeros as falsy",
bucket: { foo: [ 0 ] },
delta: {},
expected: { foo: [ 0 ] },
},
{
label: "Don't evaluate empty strings as falsy",
bucket: { foo: [ '' ] },
delta: {},
expected: { foo: [ '' ] },
},
] ).forEach( ( { label, bucket, delta, expected } ) =>
{
it( label, () =>
{
expect( sutApply( bucket, delta ) ).to.deep.equal( expected );
} );
} );
} );
} );