diff2html/src/__tests__/line-by-line-tests.ts

import LineByLineRenderer from "../line-by-line-renderer";
import HoganJsUtils from "../hoganjs-utils";
import { LineType, DiffFile, LineMatchingType } from "../types";
import { CSSLineClass } from "../render-utils";

describe("LineByLineRenderer", () => {
  describe("_generateEmptyDiff", () => {
    it("should return an empty diff", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateEmptyDiff();
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-info\\">
                <div class=\\"d2h-code-line d2h-info\\">
                    File without changes
                </div>
            </td>
        </tr>"
      `);
    });
  });

  describe("makeLineHtml", () => {
    it("should work for insertions", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateSingleLineHtml({
        type: CSSLineClass.INSERTS,
        prefix: "+",
        content: "test",
        oldNumber: undefined,
        newNumber: 30
      });
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-ins\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">30</div>
            </td>
            <td class=\\"d2h-ins\\">
                <div class=\\"d2h-code-line d2h-ins\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\">test</span>
                </div>
            </td>
        </tr>"
      `);
    });

    it("should work for deletions", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateSingleLineHtml({
        type: CSSLineClass.DELETES,
        prefix: "-",
        content: "test",
        oldNumber: 30,
        newNumber: undefined
      });
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-del\\">
              <div class=\\"line-num1\\">30</div>
        <div class=\\"line-num2\\"></div>
            </td>
            <td class=\\"d2h-del\\">
                <div class=\\"d2h-code-line d2h-del\\">
                    <span class=\\"d2h-code-line-prefix\\">-</span>
                    <span class=\\"d2h-code-line-ctn\\">test</span>
                </div>
            </td>
        </tr>"
      `);
    });

    it("should convert indents into non breakin spaces (2 white spaces)", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateSingleLineHtml({
        type: CSSLineClass.INSERTS,
        prefix: "+",
        content: "  test",
        oldNumber: undefined,
        newNumber: 30
      });
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-ins\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">30</div>
            </td>
            <td class=\\"d2h-ins\\">
                <div class=\\"d2h-code-line d2h-ins\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\">  test</span>
                </div>
            </td>
        </tr>"
      `);
    });

    it("should convert indents into non breakin spaces (4 white spaces)", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateSingleLineHtml({
        type: CSSLineClass.INSERTS,
        prefix: "+",
        content: "    test",
        oldNumber: undefined,
        newNumber: 30
      });
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-ins\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">30</div>
            </td>
            <td class=\\"d2h-ins\\">
                <div class=\\"d2h-code-line d2h-ins\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\">    test</span>
                </div>
            </td>
        </tr>"
      `);
    });

    it("should preserve tabs", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const fileHtml = lineByLineRenderer.generateSingleLineHtml({
        type: CSSLineClass.INSERTS,
        prefix: "+",
        content: "\ttest",
        oldNumber: undefined,
        newNumber: 30
      });
      expect(fileHtml).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-ins\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">30</div>
            </td>
            <td class=\\"d2h-ins\\">
                <div class=\\"d2h-code-line d2h-ins\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\">	test</span>
                </div>
            </td>
        </tr>"
      `);
    });
  });

  describe("makeFileDiffHtml", () => {
    it("should work for simple file", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});

      const file = {
        addedLines: 12,
        deletedLines: 41,
        language: "js",
        oldName: "my/file/name.js",
        newName: "my/file/name.js",
        isCombined: false,
        isGitDiff: false,
        blocks: []
      };
      const diffs = "<span>Random Html</span>";

      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);

      expect(fileHtml).toMatchInlineSnapshot(`
        "<div id=\\"d2h-781444\\" class=\\"d2h-file-wrapper\\" data-lang=\\"js\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">my/file/name.js</span>
            <span class=\\"d2h-tag d2h-changed d2h-changed-tag\\">CHANGED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <span>Random Html</span>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>"
      `);
    });
    it("should work for simple added file", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});

      const file = {
        addedLines: 12,
        deletedLines: 0,
        language: "js",
        oldName: "dev/null",
        newName: "my/file/name.js",
        isNew: true,
        isCombined: false,
        isGitDiff: false,
        blocks: []
      };
      const diffs = "<span>Random Html</span>";

      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);

      expect(fileHtml).toMatchInlineSnapshot(`
        "<div id=\\"d2h-781444\\" class=\\"d2h-file-wrapper\\" data-lang=\\"js\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">my/file/name.js</span>
            <span class=\\"d2h-tag d2h-added d2h-added-tag\\">ADDED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <span>Random Html</span>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>"
      `);
    });
    it("should work for simple deleted file", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});

      const file = {
        addedLines: 0,
        deletedLines: 41,
        language: "js",
        oldName: "my/file/name.js",
        newName: "dev/null",
        isDeleted: true,
        isCombined: false,
        isGitDiff: false,
        blocks: []
      };
      const diffs = "<span>Random Html</span>";

      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);

      expect(fileHtml).toMatchInlineSnapshot(`
        "<div id=\\"d2h-781444\\" class=\\"d2h-file-wrapper\\" data-lang=\\"js\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">my/file/name.js</span>
            <span class=\\"d2h-tag d2h-deleted d2h-deleted-tag\\">DELETED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <span>Random Html</span>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>"
      `);
    });
    it("should work for simple renamed file", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});

      const file = {
        addedLines: 12,
        deletedLines: 41,
        language: "js",
        oldName: "my/file/name1.js",
        newName: "my/file/name2.js",
        isRename: true,
        isCombined: false,
        isGitDiff: false,
        blocks: []
      };
      const diffs = "<span>Random Html</span>";

      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);

      expect(fileHtml).toMatchInlineSnapshot(`
        "<div id=\\"d2h-662683\\" class=\\"d2h-file-wrapper\\" data-lang=\\"js\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">my/file/{name1.js → name2.js}</span>
            <span class=\\"d2h-tag d2h-moved d2h-moved-tag\\">RENAMED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <span>Random Html</span>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>"
      `);
    });
    it("should return empty when option renderNothingWhenEmpty is true and file blocks not present", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
        renderNothingWhenEmpty: true
      });

      const file = {
        addedLines: 0,
        deletedLines: 0,
        language: "js",
        oldName: "my/file/name1.js",
        newName: "my/file/name2.js",
        isRename: true,
        isCombined: false,
        isGitDiff: false,
        blocks: []
      };

      const diffs = "<span>Random Html</span>";

      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);

      expect(fileHtml).toMatchInlineSnapshot(`""`);
    });
  });

  describe("generateLineByLineJsonHtml", () => {
    it("should work for list of files", () => {
      const exampleJson: DiffFile[] = [
        {
          blocks: [
            {
              lines: [
                {
                  content: "-test",
                  type: LineType.DELETE,
                  oldNumber: 1,
                  newNumber: undefined
                },
                {
                  content: "+test1r",
                  type: LineType.INSERT,
                  oldNumber: undefined,
                  newNumber: 1
                }
              ],
              oldStartLine: 1,
              oldStartLine2: undefined,
              newStartLine: 1,
              header: "@@ -1 +1 @@"
            }
          ],
          deletedLines: 1,
          addedLines: 1,
          checksumBefore: "0000001",
          checksumAfter: "0ddf2ba",
          oldName: "sample",
          newName: "sample",
          language: "txt",
          isCombined: false,
          isGitDiff: true
        }
      ];

      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
        matching: LineMatchingType.LINES
      });
      const html = lineByLineRenderer.render(exampleJson);
      expect(html).toMatchInlineSnapshot(`
        "<div class=\\"d2h-wrapper\\">
            <div id=\\"d2h-675094\\" class=\\"d2h-file-wrapper\\" data-lang=\\"txt\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">sample</span>
            <span class=\\"d2h-tag d2h-changed d2h-changed-tag\\">CHANGED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <tr>
            <td class=\\"d2h-code-linenumber d2h-info\\"></td>
            <td class=\\"d2h-info\\">
                <div class=\\"d2h-code-line d2h-info\\">@@ -1 +1 @@</div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-del d2h-change\\">
              <div class=\\"line-num1\\">1</div>
        <div class=\\"line-num2\\"></div>
            </td>
            <td class=\\"d2h-del d2h-change\\">
                <div class=\\"d2h-code-line d2h-del d2h-change\\">
                    <span class=\\"d2h-code-line-prefix\\">-</span>
                    <span class=\\"d2h-code-line-ctn\\"><del>test</del></span>
                </div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-ins d2h-change\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">1</div>
            </td>
            <td class=\\"d2h-ins d2h-change\\">
                <div class=\\"d2h-code-line d2h-ins d2h-change\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\"><ins>test1r</ins></span>
                </div>
            </td>
        </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
        </div>"
      `);
    });

    it("should work for empty blocks", () => {
      const exampleJson = [
        {
          blocks: [],
          deletedLines: 0,
          addedLines: 0,
          oldName: "sample",
          language: "js",
          newName: "sample",
          isCombined: false,
          isGitDiff: false
        }
      ];

      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
        renderNothingWhenEmpty: false
      });
      const html = lineByLineRenderer.render(exampleJson);
      expect(html).toMatchInlineSnapshot(`
        "<div class=\\"d2h-wrapper\\">
            <div id=\\"d2h-675094\\" class=\\"d2h-file-wrapper\\" data-lang=\\"js\\">
            <div class=\\"d2h-file-header\\">
            <span class=\\"d2h-file-name-wrapper\\">
            <svg aria-hidden=\\"true\\" class=\\"d2h-icon\\" height=\\"16\\" version=\\"1.1\\" viewBox=\\"0 0 12 16\\" width=\\"12\\">
                <path d=\\"M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z\\"></path>
            </svg>    <span class=\\"d2h-file-name\\">sample</span>
            <span class=\\"d2h-tag d2h-changed d2h-changed-tag\\">CHANGED</span></span>
            </div>
            <div class=\\"d2h-file-diff\\">
                <div class=\\"d2h-code-wrapper\\">
                    <table class=\\"d2h-diff-table\\">
                        <tbody class=\\"d2h-diff-tbody\\">
                        <tr>
            <td class=\\"d2h-info\\">
                <div class=\\"d2h-code-line d2h-info\\">
                    File without changes
                </div>
            </td>
        </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
        </div>"
      `);
    });
  });

  describe("_generateFileHtml", () => {
    it("should work for simple file", () => {
      const hoganUtils = new HoganJsUtils({});
      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
      const file: DiffFile = {
        blocks: [
          {
            lines: [
              {
                content: " one context line",
                type: LineType.CONTEXT,
                oldNumber: 1,
                newNumber: 1
              },
              {
                content: "-test",
                type: LineType.DELETE,
                oldNumber: 2,
                newNumber: undefined
              },
              {
                content: "+test1r",
                type: LineType.INSERT,
                oldNumber: undefined,
                newNumber: 2
              },
              {
                content: "+test2r",
                type: LineType.INSERT,
                oldNumber: undefined,
                newNumber: 3
              }
            ],
            oldStartLine: 1,
            oldStartLine2: undefined,
            newStartLine: 1,
            header: "@@ -1 +1 @@"
          }
        ],
        deletedLines: 1,
        addedLines: 1,
        checksumBefore: "0000001",
        checksumAfter: "0ddf2ba",
        oldName: "sample",
        language: "txt",
        newName: "sample",
        isCombined: false,
        isGitDiff: true
      };

      const html = lineByLineRenderer.generateFileHtml(file);

      expect(html).toMatchInlineSnapshot(`
        "<tr>
            <td class=\\"d2h-code-linenumber d2h-info\\"></td>
            <td class=\\"d2h-info\\">
                <div class=\\"d2h-code-line d2h-info\\">@@ -1 +1 @@</div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-cntx\\">
              <div class=\\"line-num1\\">1</div>
        <div class=\\"line-num2\\">1</div>
            </td>
            <td class=\\"d2h-cntx\\">
                <div class=\\"d2h-code-line d2h-cntx\\">
                    <span class=\\"d2h-code-line-prefix\\">&nbsp;</span>
                    <span class=\\"d2h-code-line-ctn\\">one context line</span>
                </div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-del d2h-change\\">
              <div class=\\"line-num1\\">2</div>
        <div class=\\"line-num2\\"></div>
            </td>
            <td class=\\"d2h-del d2h-change\\">
                <div class=\\"d2h-code-line d2h-del d2h-change\\">
                    <span class=\\"d2h-code-line-prefix\\">-</span>
                    <span class=\\"d2h-code-line-ctn\\"><del>test</del></span>
                </div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-ins d2h-change\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">2</div>
            </td>
            <td class=\\"d2h-ins d2h-change\\">
                <div class=\\"d2h-code-line d2h-ins d2h-change\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\"><ins>test1r</ins></span>
                </div>
            </td>
        </tr><tr>
            <td class=\\"d2h-code-linenumber d2h-ins\\">
              <div class=\\"line-num1\\"></div>
        <div class=\\"line-num2\\">3</div>
            </td>
            <td class=\\"d2h-ins\\">
                <div class=\\"d2h-code-line d2h-ins\\">
                    <span class=\\"d2h-code-line-prefix\\">+</span>
                    <span class=\\"d2h-code-line-ctn\\">test2r</span>
                </div>
            </td>
        </tr>"
      `);
    });
  });
});