feat: rule selector helper

src/rule.ts

@@ -35,6 +35,25 @@ export interface RuleSource {
   rules: Array<RuleData>;
 }
 
+export function ensureArray<T>(val: Array<T> | undefined): Array<T> {
+  if (isNil(val)) {
+    return [];
+  } else {
+    return Array.from(val);
+  }
+}
+
+export function makeSelector(options: Partial<RuleSelector>) {
+  return {
+    excludeLevel: ensureArray(options.excludeLevel),
+    excludeName: ensureArray(options.excludeName),
+    excludeTag: ensureArray(options.excludeTag),
+    includeLevel: ensureArray(options.includeLevel),
+    includeName: ensureArray(options.includeName),
+    includeTag: ensureArray(options.includeTag),
+  };
+}
+
 export async function loadRules(paths: Array<string>, ajv: any): Promise<Array<Rule>> {
   const parser = new YamlParser();
   const rules = [];

test/TestRule.ts

@@ -1,25 +1,25 @@
 import { expect } from 'chai';
-import { Rule, resolveRules } from 'src/rule';
+import { Rule, resolveRules, makeSelector } from 'src/rule';
 
 const TEST_RULES = [new Rule({
   name: 'foo',
   desc: '',
   level: 'info',
-  tags: ['foo'],
+  tags: ['all', 'foo'],
   check: {},
   select: '$',
 }), new Rule({
   name: 'bar',
   desc: '',
   level: 'warn',
-  tags: ['test'],
+  tags: ['all', 'test'],
   check: {},
   select: '$',
 }), new Rule({
   name: 'bin',
   desc: '',
   level: 'warn',
-  tags: ['test'],
+  tags: ['all', 'test'],
   check: {},
   select: '$',
 })];
@@ -27,28 +27,18 @@ const TEST_RULES = [new Rule({
 describe('rule resolver', () => {
   describe('include by level', () => {
     it('should include info rules', async () => {
-      const info = await resolveRules(TEST_RULES, {
-        excludeLevel: [],
-        excludeName: [],
-        excludeTag: [],
+      const info = await resolveRules(TEST_RULES, makeSelector({
         includeLevel: ['info'],
-        includeName: [],
-        includeTag: [],
-      });
+      }));
 
       expect(info.length).to.equal(1);
       expect(info[0]).to.equal(TEST_RULES[0]);
     });
 
     it('should include warn rules', async () => {
-      const info = await resolveRules(TEST_RULES, {
-        excludeLevel: [],
-        excludeName: [],
-        excludeTag: [],
+      const info = await resolveRules(TEST_RULES, makeSelector({
         includeLevel: ['warn'],
-        includeName: [],
-        includeTag: [],
-      });
+      }));
 
       expect(info.length).to.equal(2);
       expect(info[0]).to.equal(TEST_RULES[1]);
@@ -58,14 +48,9 @@ describe('rule resolver', () => {
 
   describe('include by name', () => {
     it('should include foo rules', async () => {
-      const rules = await resolveRules(TEST_RULES, {
-        excludeLevel: [],
-        excludeName: [],
-        excludeTag: [],
-        includeLevel: [],
+      const rules = await resolveRules(TEST_RULES, makeSelector({
         includeName: ['foo'],
-        includeTag: [],
-      });
+      }));
 
       expect(rules.length).to.equal(1);
       expect(rules[0].name).to.equal('foo');
@@ -74,18 +59,38 @@ describe('rule resolver', () => {
 
   describe('include by tag', () => {
     it('should include test rules', async () => {
-      const rules = await resolveRules(TEST_RULES, {
-        excludeLevel: [],
-        excludeName: [],
-        excludeTag: [],
-        includeLevel: [],
-        includeName: [],
+      const rules = await resolveRules(TEST_RULES, makeSelector({
         includeTag: ['test'],
-      });
+      }));
 
       expect(rules.length).to.equal(2);
       expect(rules[0]).to.equal(TEST_RULES[1]);
       expect(rules[1]).to.equal(TEST_RULES[2]);
     });
   });
+
+  describe('exclude by name', () => {
+    it('should exclude foo rules', async () => {
+      const rules = await resolveRules(TEST_RULES, makeSelector({
+        excludeName: ['foo'],
+        includeTag: ['all'],
+      }));
+
+      expect(rules.length).to.equal(2);
+      expect(rules[0]).to.equal(TEST_RULES[1]);
+      expect(rules[1]).to.equal(TEST_RULES[2]);
+    });
+  });
+
+  describe('exclude by tag', () => {
+    it('should exclude test rules', async () => {
+      const rules = await resolveRules(TEST_RULES, makeSelector({
+        excludeTag: ['test'],
+        includeTag: ['all'],
+      }));
+
+      expect(rules.length).to.equal(1);
+      expect(rules[0]).to.equal(TEST_RULES[0]);
+    });
+  });
 });