feat(test): add example data-driven tests

test/TestResolve.ts

@@ -0,0 +1,18 @@
+import { expect } from 'chai';
+
+import { resolveLabels } from '../src/resolve';
+import { TEST_CASES } from './resolve/cases';
+
+describe('resolve labels', () => {
+  it('should return the existing labels when no rules are provided');
+
+  // procedural tests
+  describe('resolver test cases', () => {
+    for (const test of TEST_CASES) {
+      it(`should resolve ${test.name}`, () => {
+        const actualResult = resolveLabels(test.input);
+        expect(actualResult).to.deep.equal(test.result);
+      });
+    }
+  });
+});

test/resolve/cases.ts

@@ -0,0 +1,25 @@
+import { ResolveInput, ResolveResult } from '../../src/resolve';
+
+export interface ResolveTestCase {
+  input: ResolveInput;
+  name: string;
+  result: ResolveResult;
+}
+
+export const TEST_CASES: Array<ResolveTestCase> = [{
+  input: {
+    config: {
+      colors: [],
+      flags: [],
+      states: [],
+    },
+    issue: '',
+    labels: [],
+  },
+  name: 'test-1',
+  result: {
+    changes: [],
+    errors: [],
+    labels: [],
+  },
+}];