refactor progress

packages/markdown_parser/src/__tests__/AstUtils.test.tsx

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {NodeType} from '@fluxer/markdown_parser/src/types/Enums';
+import type {FormattingNode, Node, TextNode} from '@fluxer/markdown_parser/src/types/Nodes';
+import {
+	addTextNode,
+	combineAdjacentTextNodes,
+	flattenSameType,
+	isFormattingNode,
+	mergeTextNodes,
+} from '@fluxer/markdown_parser/src/utils/AstUtils';
+import {describe, expect, test} from 'vitest';
+
+describe('AST Utils', () => {
+	describe('isFormattingNode', () => {
+		test('should identify formatting nodes', () => {
+			const emphasisNode: FormattingNode = {
+				type: NodeType.Emphasis,
+				children: [{type: NodeType.Text, content: 'test'}],
+			};
+			const strongNode: FormattingNode = {
+				type: NodeType.Strong,
+				children: [{type: NodeType.Text, content: 'test'}],
+			};
+			const textNode: TextNode = {
+				type: NodeType.Text,
+				content: 'test',
+			};
+
+			expect(isFormattingNode(emphasisNode)).toBe(true);
+			expect(isFormattingNode(strongNode)).toBe(true);
+			expect(isFormattingNode(textNode)).toBe(false);
+		});
+	});
+
+	describe('flattenSameType', () => {
+		test('should flatten nodes of the same type', () => {
+			const children: Array<Node> = [
+				{type: NodeType.Text, content: 'first'},
+				{
+					type: NodeType.Emphasis,
+					children: [
+						{type: NodeType.Text, content: 'nested1'},
+						{type: NodeType.Text, content: 'nested2'},
+					],
+				},
+				{type: NodeType.Text, content: 'last'},
+			];
+
+			flattenSameType(children, NodeType.Emphasis);
+			expect(children).toHaveLength(4);
+		});
+
+		test('should handle empty children arrays', () => {
+			const children: Array<Node> = [];
+			flattenSameType(children, NodeType.Text);
+			expect(children).toEqual([]);
+		});
+	});
+
+	describe('combineAdjacentTextNodes', () => {
+		test('should combine adjacent text nodes', () => {
+			const nodes: Array<Node> = [
+				{type: NodeType.Text, content: 'first'},
+				{type: NodeType.Text, content: 'second'},
+				{type: NodeType.Text, content: 'third'},
+			];
+
+			combineAdjacentTextNodes(nodes);
+			expect(nodes).toHaveLength(1);
+			expect(nodes[0]).toEqual({type: NodeType.Text, content: 'firstsecondthird'});
+		});
+
+		test('should not combine non-text nodes', () => {
+			const nodes: Array<Node> = [
+				{type: NodeType.Text, content: 'text'},
+				{type: NodeType.Emphasis, children: [{type: NodeType.Text, content: 'emphasis'}]},
+				{type: NodeType.Text, content: 'more text'},
+			];
+			combineAdjacentTextNodes(nodes);
+
+			expect(nodes).toHaveLength(3);
+			expect(nodes[0]).toEqual({type: NodeType.Text, content: 'text'});
+			expect(nodes[1].type).toBe(NodeType.Emphasis);
+			expect(nodes[2]).toEqual({type: NodeType.Text, content: 'more text'});
+		});
+	});
+
+	describe('mergeTextNodes', () => {
+		test('should merge text nodes', () => {
+			const nodes: Array<Node> = [
+				{type: NodeType.Text, content: 'hello '},
+				{type: NodeType.Text, content: 'world'},
+			];
+			const result = mergeTextNodes(nodes);
+
+			expect(result).toHaveLength(1);
+			expect(result[0]).toEqual({type: NodeType.Text, content: 'hello world'});
+		});
+
+		test('should handle mixed node types', () => {
+			const nodes: Array<Node> = [
+				{type: NodeType.Text, content: 'start'},
+				{type: NodeType.Emphasis, children: [{type: NodeType.Text, content: 'middle'}]},
+				{type: NodeType.Text, content: 'end'},
+			];
+			const result = mergeTextNodes(nodes);
+
+			expect(result).toHaveLength(3);
+			expect(result[0]).toEqual({type: NodeType.Text, content: 'start'});
+			expect(result[1].type).toBe(NodeType.Emphasis);
+			expect(result[2]).toEqual({type: NodeType.Text, content: 'end'});
+		});
+
+		test('should handle empty arrays', () => {
+			const result = mergeTextNodes([]);
+			expect(result).toEqual([]);
+		});
+	});
+
+	describe('addTextNode', () => {
+		test('should add text node to array', () => {
+			const nodes: Array<Node> = [];
+			addTextNode(nodes, 'test content');
+
+			expect(nodes).toHaveLength(1);
+			expect(nodes[0]).toEqual({type: NodeType.Text, content: 'test content'});
+		});
+
+		test('should handle empty text', () => {
+			const nodes: Array<Node> = [];
+			addTextNode(nodes, '');
+
+			expect(nodes).toHaveLength(0);
+		});
+	});
+});