mermaid/cypress/integration/rendering/flowchart-v2.spec.js

/* eslint-env jest */
import { imgSnapshotTest, renderGraph } from '../../helpers/util';

describe('Flowchart v2', () => {
  it('1: should render a simple flowchart', () => {
    imgSnapshotTest(
      `flowchart TD
      A[Christmas] -->|Get money| B(Go shopping)
      B --> C{Let me think}
      C -->|One| D[Laptop]
      C -->|Two| E[iPhone]
      C -->|Three| F[fa:fa-car Car]
      `,
      {}
    );
  });

  it('2: should render a simple flowchart with diagramPadding set to 0', () => {
    imgSnapshotTest(
      `flowchart TD
      A[Christmas] -->|Get money| B(Go shopping)
      B --> C{Let me think}
      %% this is a comment
      C -->|One| D[Laptop]
      C -->|Two| E[iPhone]
      C -->|Three| F[fa:fa-car Car]
      `,
      { flowchart: { diagramPadding: 0 } }
    );
  });

    it('3: a link with correct arrowhead to a subgraph', () => {
    imgSnapshotTest(
      `flowchart TD
        P1
        P1 -->P1.5
        subgraph P1.5
          P2
          P2.5(( A ))
          P3
        end
        P2 --> P4
        P3 --> P6
        P1.5 --> P5
      `,
      { flowchart: { diagramPadding: 0 } }
    );
  });

  it('4: Length of edges', () => {
    imgSnapshotTest(
      `flowchart TD
      L1 --- L2
      L2 --- C
      M1 ---> C
      R1 .-> R2
      R2 <.-> C
      C -->|Label 1| E1
      C <-- Label 2 ---> E2
      C ----> E3
      C <-...-> E4
      C ======> E5
      `,
      { flowchart: { diagramPadding: 0 } }
    );
  });
  it('5: should render escaped without html labels', () => {
    imgSnapshotTest(
      `flowchart TD
        a["<strong>Haiya</strong>"]---->b
      `,
      {htmlLabels: false, flowchart: {htmlLabels: false}}
    );
  });
  it('6: should render non-escaped with html labels', () => {
    imgSnapshotTest(
      `flowchart TD
        a["<strong>Haiya</strong>"]===>b
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });
  it('7: should render a flowchart when useMaxWidth is true (default)', () => {
    renderGraph(
      `flowchart TD
      A[Christmas] -->|Get money| B(Go shopping)
      B --> C{Let me think}
      C -->|One| D[Laptop]
      C -->|Two| E[iPhone]
      C -->|Three| F[fa:fa-car Car]
      `,
      { flowchart: { useMaxWidth: true } }
    );
    cy.get('svg')
      .should((svg) => {
        expect(svg).to.have.attr('width', '100%');
        expect(svg).to.have.attr('height');
        // use within because the absolute value can be slightly different depending on the environment ±5%
        const height = parseFloat(svg.attr('height'));
        expect(height).to.be.within(446 * .95, 446 * 1.05);
        const style = svg.attr('style');
        expect(style).to.match(/^max-width: [\d.]+px;$/);
        const maxWidthValue = parseFloat(style.match(/[\d.]+/g).join(''));
        expect(maxWidthValue).to.be.within(300 * .95-1, 300 * 1.05);
      });
  });
  it('8: should render a flowchart when useMaxWidth is false', () => {
    renderGraph(
      `flowchart TD
      A[Christmas] -->|Get money| B(Go shopping)
      B --> C{Let me think}
      C -->|One| D[Laptop]
      C -->|Two| E[iPhone]
      C -->|Three| F[fa:fa-car Car]
      `,
      { flowchart: { useMaxWidth: false } }
    );
    cy.get('svg')
      .should((svg) => {
        const height = parseFloat(svg.attr('height'));
        const width = parseFloat(svg.attr('width'));
        // use within because the absolute value can be slightly different depending on the environment ±5%
        expect(height).to.be.within(446 * .95, 446 * 1.05);
        expect(width).to.be.within(300 * .95-1, 300 * 1.05);
        expect(svg).to.not.have.attr('style');
      });
  });

  it('V2 - 16: Render Stadium shape', () => {
    imgSnapshotTest(
      ` flowchart TD
      A([stadium shape test])
      A -->|Get money| B([Go shopping])
      B --> C([Let me think...<br />Do I want something for work,<br />something to spend every free second with,<br />or something to get around?])
      C -->|One| D([Laptop])
      C -->|Two| E([iPhone])
      C -->|Three| F([Car<br/>wroom wroom])
      click A "index.html#link-clicked" "link test"
      click B testClick "click test"
      classDef someclass fill:#f96;
      class A someclass;
      class C someclass;
      `,
      { flowchart: { htmlLabels: false } , fontFamily: 'courier'}
    );
  });

  it('50: handle nested subgraphs in reverse order', () => {
    imgSnapshotTest(
      `flowchart LR
        a -->b
        subgraph A
        B
        end
        subgraph B
        b
        end
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

  it('51: handle nested subgraphs in reverse order', () => {
    imgSnapshotTest(
      `flowchart LR
        a -->b
        subgraph A
        B
        end
        subgraph B
        b
        end
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

  it('52: handle nested subgraphs in several levels', () => {
    imgSnapshotTest(
      `flowchart TB
    b-->B
    a-->c
    subgraph O
      A
    end
    subgraph B
      c
    end
    subgraph A
        a
        b
        B
    end
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

  it('53: handle nested subgraphs with edges in and out', () => {
    imgSnapshotTest(
      `flowchart TB
  internet
  nat
  routeur
  lb1
  lb2
  compute1
  compute2
  subgraph project
  routeur
  nat
    subgraph subnet1
      compute1
      lb1
    end
    subgraph subnet2
      compute2
      lb2
    end
  end
  internet --> routeur
  routeur --> subnet1 & subnet2
  subnet1 & subnet2 --> nat --> internet
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

  it('54: handle nested subgraphs with outgoing links', () => {
    imgSnapshotTest(
      `flowchart TD
  subgraph  main
    subgraph subcontainer
      subcontainer-child
    end
     subcontainer-child--> subcontainer-sibling
  end
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

  it('55: handle nested subgraphs with outgoing links 2', () => {
    imgSnapshotTest(
      `flowchart TD

subgraph one[One]
    subgraph sub_one[Sub One]
        _sub_one
    end
    subgraph sub_two[Sub Two]
        _sub_two
    end
    _one
end

%% here, either the first or the second one
sub_one --> sub_two
_one --> b
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });


  it('56: handle nested subgraphs with outgoing links 3', () => {
    imgSnapshotTest(
      `flowchart TB
  subgraph container_Beta
    process_C-->Process_D
  end
  subgraph container_Alpha
    process_A-->process_B
    process_A-->|messages|process_C
    end
    process_B-->|via_AWSBatch|container_Beta
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });
  it('57: handle nested subgraphs with outgoing links 4', () => {
    imgSnapshotTest(
      `flowchart LR
subgraph A
a -->b
end
subgraph B
b
end
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });


  it('57: handle nested subgraphs with outgoing links 2', () => {
    imgSnapshotTest(
      `flowchart TB
    c1-->a2
    subgraph one
    a1-->a2
    end
    subgraph two
    b1-->b2
    end
    subgraph three
    c1-->c2
    end
    one --> two
    three --> two
    two --> c2
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });
  it('58: handle styling with style expressions', () => {
    imgSnapshotTest(
      `
    flowchart LR
    id1(Start)-->id2(Stop)
    style id1 fill:#f9f,stroke:#333,stroke-width:4px
    style id2 fill:#bbf,stroke:#f66,stroke-width:2px,color:#fff,stroke-dasharray: 5 5
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });
  it('59: handle styling of subgraphs and links', () => {
    imgSnapshotTest(
      `
    flowchart TD
      A[Christmas] -->|Get money| B(Go shopping)
      subgraph T ["Test"]
        A
        B
      end
      classDef Test fill:#F84E68,stroke:#333,color:white;
      class A,T Test
      classDef TestSub fill:green;
      class T TestSub
      linkStyle 0 color:orange, stroke: orange;
      `,
      {htmlLabels: true, flowchart: {htmlLabels: true}, securityLevel: 'loose'}
    );
  });

});