fix #1959 - LCS (#2129)

* fix #1959 - LCS

* newlines at end of files

packages/client/lib/cluster/commands.ts

@@ -71,6 +71,10 @@ import * as HVALS from '../commands/HVALS';
 import * as INCR from '../commands/INCR';
 import * as INCRBY from '../commands/INCRBY';
 import * as INCRBYFLOAT from '../commands/INCRBYFLOAT';
+import * as LCS_IDX_WITHMATCHLEN from '../commands/LCS_IDX_WITHMATCHLEN';
+import * as LCS_IDX from '../commands/LCS_IDX';
+import * as LCS_LEN from '../commands/LCS_LEN';
+import * as LCS from '../commands/LCS';
 import * as LINDEX from '../commands/LINDEX';
 import * as LINSERT from '../commands/LINSERT';
 import * as LLEN from '../commands/LLEN';
@@ -351,6 +355,14 @@ export default {
     incrBy: INCRBY,
     INCRBYFLOAT,
     incrByFloat: INCRBYFLOAT,
+    LCS_IDX_WITHMATCHLEN,
+    lcsIdxWithMatchLen: LCS_IDX_WITHMATCHLEN,
+    LCS_IDX,
+    lcsIdx: LCS_IDX,
+    LCS_LEN,
+    lcsLen: LCS_LEN,
+    LCS,
+    lcs: LCS,
     LINDEX,
     lIndex: LINDEX,
     LINSERT,

packages/client/lib/commands/LCS.spec.ts

@@ -0,0 +1,28 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './LCS';
+
+describe('LCS', () => {
+    testUtils.isVersionGreaterThanHook([7]);
+
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('1', '2'),
+            ['LCS', '1', '2']
+        );
+    });
+
+    testUtils.testWithClient('client.lcs', async client => {
+        assert.equal(
+            await client.lcs('1', '2'),
+            ''
+        );
+    }, GLOBAL.SERVERS.OPEN);
+
+    testUtils.testWithCluster('cluster.lcs', async cluster => {
+        assert.equal(
+            await cluster.lcs('{tag}1', '{tag}2'),
+            ''
+        );
+    }, GLOBAL.CLUSTERS.OPEN);
+});

packages/client/lib/commands/LCS.ts

@@ -0,0 +1,18 @@
+import { RedisCommandArgument, RedisCommandArguments } from '.';
+
+export const FIRST_KEY_INDEX = 1;
+
+export const IS_READ_ONLY = true;
+
+export function transformArguments(
+    key1: RedisCommandArgument,
+    key2: RedisCommandArgument
+): RedisCommandArguments {
+    return [
+        'LCS',
+        key1,
+        key2
+    ];
+}
+
+export declare function transformReply(): string | Buffer;

packages/client/lib/commands/LCS_IDX.spec.ts

@@ -0,0 +1,41 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './LCS_IDX';
+
+describe('LCS_IDX', () => {
+    testUtils.isVersionGreaterThanHook([7]);
+
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('1', '2'),
+            ['LCS', '1', '2', 'IDX']
+        );
+    });
+
+    testUtils.testWithClient('client.lcsIdx', async client => {
+        const [, reply] = await Promise.all([
+            client.mSet({
+                '1': 'abc',
+                '2': 'bc'
+            }),
+            client.lcsIdx('1', '2')
+        ]);
+
+        assert.deepEqual(
+            reply,
+            {
+                matches: [{
+                    key1: {
+                        start: 1,
+                        end: 2
+                    },
+                    key2: {
+                        start: 0,
+                        end: 1
+                    }
+                }],
+                length: 2
+            }
+        );
+    }, GLOBAL.SERVERS.OPEN);
+});

packages/client/lib/commands/LCS_IDX.ts

@@ -0,0 +1,42 @@
+import { RedisCommandArgument, RedisCommandArguments } from '.';
+import { RangeReply, RawRangeReply, transformRangeReply } from './generic-transformers';
+import { transformArguments as transformLcsArguments } from './LCS';
+
+export { FIRST_KEY_INDEX, IS_READ_ONLY } from './LCS';
+
+export function transformArguments(
+    key1: RedisCommandArgument,
+    key2: RedisCommandArgument
+): RedisCommandArguments {
+    const args = transformLcsArguments(key1, key2);
+    args.push('IDX');
+    return args;
+}
+
+type RawReply = [
+    'matches',
+    Array<[
+        key1: RawRangeReply,
+        key2: RawRangeReply
+    ]>,
+    'len',
+    number
+];
+
+interface Reply {
+    matches: Array<{
+        key1: RangeReply;
+        key2: RangeReply;
+    }>;
+    length: number;
+}
+
+export function transformReply(reply: RawReply): Reply {
+    return {
+        matches: reply[1].map(([key1, key2]) => ({
+            key1: transformRangeReply(key1),
+            key2: transformRangeReply(key2)
+        })),
+        length: reply[3]
+    };
+}

packages/client/lib/commands/LCS_IDX_WITHMATCHLEN.spec.ts

@@ -0,0 +1,42 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './LCS_IDX_WITHMATCHLEN';
+
+describe('LCS_IDX_WITHMATCHLEN', () => {
+    testUtils.isVersionGreaterThanHook([7]);
+
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('1', '2'),
+            ['LCS', '1', '2', 'IDX', 'WITHMATCHLEN']
+        );
+    });
+
+    testUtils.testWithClient('client.lcsIdxWithMatchLen', async client => {
+        const [, reply] = await Promise.all([
+            client.mSet({
+                '1': 'abc',
+                '2': 'bc'
+            }),
+            client.lcsIdxWithMatchLen('1', '2')
+        ]);
+
+        assert.deepEqual(
+            reply,
+            {
+                matches: [{
+                    key1: {
+                        start: 1,
+                        end: 2
+                    },
+                    key2: {
+                        start: 0,
+                        end: 1
+                    },
+                    length: 2
+                }],
+                length: 2
+            }
+        );
+    }, GLOBAL.SERVERS.OPEN);
+});

packages/client/lib/commands/LCS_IDX_WITHMATCHLEN.ts

@@ -0,0 +1,45 @@
+import { RedisCommandArgument, RedisCommandArguments } from '.';
+import { RangeReply, RawRangeReply, transformRangeReply } from './generic-transformers';
+import { transformArguments as transformLcsArguments } from './LCS';
+
+export { FIRST_KEY_INDEX, IS_READ_ONLY } from './LCS';
+
+export function transformArguments(
+    key1: RedisCommandArgument,
+    key2: RedisCommandArgument
+): RedisCommandArguments {
+    const args = transformLcsArguments(key1, key2);
+    args.push('IDX', 'WITHMATCHLEN');
+    return args;
+}
+
+type RawReply = [
+    'matches',
+    Array<[
+        key1: RawRangeReply,
+        key2: RawRangeReply,
+        length: number
+    ]>,
+    'len',
+    number
+];
+
+interface Reply {
+    matches: Array<{
+        key1: RangeReply;
+        key2: RangeReply;
+        length: number;
+    }>;
+    length: number;
+}
+
+export function transformReply(reply: RawReply): Reply {
+    return {
+        matches: reply[1].map(([key1, key2, length]) => ({
+            key1: transformRangeReply(key1),
+            key2: transformRangeReply(key2),
+            length
+        })),
+        length: reply[3]
+    };
+}

packages/client/lib/commands/LCS_LEN.spec.ts

@@ -0,0 +1,28 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './LCS_LEN';
+
+describe('LCS_LEN', () => {
+    testUtils.isVersionGreaterThanHook([7]);
+
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('1', '2'),
+            ['LCS', '1', '2', 'LEN']
+        );
+    });
+
+    testUtils.testWithClient('client.lcsLen', async client => {
+        assert.equal(
+            await client.lcsLen('1', '2'),
+            0
+        );
+    }, GLOBAL.SERVERS.OPEN);
+
+    testUtils.testWithCluster('cluster.lcsLen', async cluster => {
+        assert.equal(
+            await cluster.lcsLen('{tag}1', '{tag}2'),
+            0
+        );
+    }, GLOBAL.CLUSTERS.OPEN);
+});

packages/client/lib/commands/LCS_LEN.ts

@@ -0,0 +1,15 @@
+import { RedisCommandArgument, RedisCommandArguments } from '.';
+import { transformArguments as transformLcsArguments } from './LCS';
+
+export { FIRST_KEY_INDEX, IS_READ_ONLY } from './LCS';
+
+export function transformArguments(
+    key1: RedisCommandArgument,
+    key2: RedisCommandArgument
+): RedisCommandArguments {
+    const args = transformLcsArguments(key1, key2);
+    args.push('LEN');
+    return args;
+}
+
+export declare function transformReply(): number;

packages/client/lib/commands/generic-transformers.ts

@@ -670,3 +670,20 @@ export function pushSlotRangesArguments(
 
     return args;
 }
+
+export type RawRangeReply = [
+    start: number,
+    end: number
+];
+
+export interface RangeReply {
+    start: number;
+    end: number;
+}
+
+export function transformRangeReply([start, end]: RawRangeReply): RangeReply {
+    return {
+        start,
+        end
+    };
+}