add test for delete action

test/test_directive_action_delete.ts

@@ -0,0 +1,33 @@
+import { assert } from 'chai';
+import 'mocha';
+import { ActionSet } from '../src/plugins/modifier/cliDirectiveAction';
+import { M4Node } from '../src/schema';
+import { Metadata } from "@azure-tools/codemodel";
+import { ActionDelete } from '../dist/src/plugins/modifier/cliDirectiveAction';
+
+describe('Test Directive - Action - delete', function () {
+    var descriptor = {
+        parent: null,
+        targetIndex: -1,
+        target: null,
+    };
+
+    it('Action delete - normal', () => {
+
+        let action = new ActionDelete(true);
+
+        let a = new Metadata();
+        a.language.default.name = "a";
+        let b = new Metadata();
+        b.language.default.name = "b";
+        let c = new Metadata();
+        c.language.default.name = "c";
+
+        descriptor.parent = [a, b, c];
+        descriptor.target = descriptor.parent[1];
+        descriptor.targetIndex = 1;
+        let o = descriptor.target;
+        action.process(descriptor);
+        assert.deepEqual(descriptor.parent, [a, c]);
+    });
+});