test: add tests for sequence diagram text wrap updates

cypress/integration/rendering/sequencediagram.spec.js

@@ -52,6 +52,26 @@ context('Sequence diagram', () => {
       {}
     );
   });
+  it('should handle line breaks and wrap annotations', () => {
+    imgSnapshotTest(
+      `
+      sequenceDiagram
+      participant Alice
+      participant Bob
+      participant John as John<br/>Second Line
+      Alice ->> Bob: Hello Bob, how are you?
+      Bob-->>John: How about you John?
+      Note right of John: John thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.
+      Bob-->Alice: Checking with John...
+      Note over John:wrap: John looks like he's still thinking, so Bob prods him a bit.
+      Bob-x John: Hey John -<br/>we're still waiting to know<br/>how you're doing
+      Note over John:nowrap: John's trying hard not to break his train of thought.
+      Bob-x John:wrap: John! Are you still debating about how you're doing? How long does it take??
+      Note over John: After a few more moments, John<br/>finally snaps out of it.
+    `,
+      {}
+    );
+  })
   it('should render loops with a slight margin', () => {
     imgSnapshotTest(
       `

src/diagrams/sequence/sequenceDiagram.spec.js

@@ -442,6 +442,87 @@ note right of 1: multiline<br \t/>text
     expect(messages[6].message).toBe('multiline<br \t/>text');
     expect(messages[7].message).toBe('multiline<br \t/>text');
   });
+  it('it should handle notes and messages without wrap specified', function () {
+    const str = `
+sequenceDiagram
+participant 1
+participant 2
+participant 3
+participant 4
+1->>2: single-line text
+note right of 2: single-line text
+2->>3:nowrap: single-line text
+note right of 3:nowrap: single-line text
+3->>4: multiline<br/>text
+note right of 4: multiline<br/>text
+4->>1:nowrap: multiline<br/>text
+note right of 1:nowrap: multiline<br/>text
+`;
+
+    mermaidAPI.parse(str);
+
+    const messages = parser.yy.getMessages();
+    expect(messages[0].message).toBe('single-line text');
+    expect(messages[1].message).toBe('single-line text');
+    expect(messages[2].message).toBe('single-line text');
+    expect(messages[3].message).toBe('single-line text');
+    expect(messages[4].message).toBe('multiline<br/>text');
+    expect(messages[5].message).toBe('multiline<br/>text');
+    expect(messages[6].message).toBe('multiline<br/>text');
+    expect(messages[7].message).toBe('multiline<br/>text');
+
+    // wrap indicates whether wrap is specified
+    expect(messages[0].wrap).toBe(false);
+    expect(messages[1].wrap).toBe(false);
+    expect(messages[2].wrap).toBe(false);
+    expect(messages[3].wrap).toBe(false);
+    expect(messages[4].wrap).toBe(false);
+    expect(messages[5].wrap).toBe(false);
+    expect(messages[6].wrap).toBe(false);
+    expect(messages[7].wrap).toBe(false);
+  })
+  it('it should handle notes and messages with wrap specified', function () {
+    const str = `
+sequenceDiagram
+participant 1
+participant 2
+participant 3
+participant 4
+1->>2:wrap: single-line text
+note right of 2:wrap: single-line text
+2->>3:wrap: multiline<br/>text
+note right of 3:wrap: multiline<br/>text
+`;
+
+    mermaidAPI.parse(str);
+
+    const messages = parser.yy.getMessages();
+    expect(messages[0].message).toBe('single-line text');
+    expect(messages[1].message).toBe('single-line text');
+    expect(messages[2].message).toBe('multiline<br/>text');
+    expect(messages[3].message).toBe('multiline<br/>text');
+    expect(messages[0].wrap).toBe(true);
+    expect(messages[1].wrap).toBe(true);
+    expect(messages[2].wrap).toBe(true);
+    expect(messages[3].wrap).toBe(true);
+  })
+  it('it should handle notes and messages with nowrap or line breaks', function () {
+    const str = `
+sequenceDiagram
+participant 1
+participant 2
+1->>2: single-line text
+note right of 2: single-line text
+`;
+
+    mermaidAPI.parse(str);
+
+    const messages = parser.yy.getMessages();
+    expect(messages[0].message).toBe('single-line text');
+    expect(messages[1].message).toBe('single-line text');
+    expect(messages[0].wrap).toBe(false);
+    expect(messages[1].wrap).toBe(false);
+  })
   it('it should handle notes over a single actor', function() {
     const str = `
 sequenceDiagram

src/diagrams/sequence/svgDraw.spec.js

@@ -49,6 +49,58 @@ describe('svgDraw', function() {
       expect(rect.attr).not.toHaveBeenCalledWith('class', expect.anything());
     });
   });
+  describe('drawText', function() {
+    it('it should append a single element', function() {
+      const svg = MockD3('svg');
+      svgDraw.drawText(svg, {
+        x: 10,
+        y: 10,
+        dy: '1em',
+        text: 'One fine text message',
+        class: 'noteText',
+        fontFamily: 'courier',
+        fontSize: '10px',
+        fontWeight: '500',
+      });
+      expect(svg.__children.length).toBe(1);
+      const text = svg.__children[0];
+      expect(text.__name).toBe('text');
+      expect(text.attr).toHaveBeenCalledWith('x', 10);
+      expect(text.attr).toHaveBeenCalledWith('y', 10);
+      expect(text.attr).toHaveBeenCalledWith('dy', '1em');
+      expect(text.attr).toHaveBeenCalledWith('class', 'noteText');
+      expect(text.text).toHaveBeenCalledWith('One fine text message');
+      expect(text.style).toHaveBeenCalledWith('font-family', 'courier');
+      expect(text.style).toHaveBeenCalledWith('font-size', '10px');
+      expect(text.style).toHaveBeenCalledWith('font-weight', '500');
+    });
+    it('it should append a multiple elements', function() {
+      const svg = MockD3('svg');
+      svgDraw.drawText(svg, {
+        x: 10,
+        y: 10,
+        text: 'One fine text message<br>with multiple<br>fine lines',
+      });
+      expect(svg.__children.length).toBe(3);
+      const text1 = svg.__children[0];
+      expect(text1.__name).toBe('text');
+      expect(text1.attr).toHaveBeenCalledWith('x', 10);
+      expect(text1.attr).toHaveBeenCalledWith('y', 10);
+      expect(text1.text).toHaveBeenCalledWith('One fine text message');
+
+      const text2 = svg.__children[1];
+      expect(text2.__name).toBe('text');
+      expect(text2.attr).toHaveBeenCalledWith('x', 10);
+      expect(text2.attr).toHaveBeenCalledWith('y', 10);
+      expect(text2.text).toHaveBeenCalledWith('with multiple');
+
+      const text3 = svg.__children[2];
+      expect(text3.__name).toBe('text');
+      expect(text3.attr).toHaveBeenCalledWith('x', 10);
+      expect(text3.attr).toHaveBeenCalledWith('y', 10);
+      expect(text3.text).toHaveBeenCalledWith('fine lines');
+    });
+  });
   describe('drawBackgroundRect', function() {
     it('it should append a rect before the previous element within a given bound', function() {
       const svg = MockD3('svg');