tsConversion: fix DiagramAPI

src/diagram-api/diagramAPI.spec.ts

@@ -0,0 +1,29 @@
+import { detectType } from './detectType';
+import { getDiagram, registerDiagram } from './diagramAPI';
+
+describe('DiagramAPI', () => {
+  it('should return default diagrams', () => {
+    expect(getDiagram('sequence')).not.toBeNull();
+  });
+
+  it('should throw error if diagram is not defined', () => {
+    expect(() => getDiagram('loki')).toThrow();
+  });
+
+  it('should handle diagram registrations', () => {
+    expect(() => getDiagram('loki')).toThrow();
+    // TODO Q: Shouldn't this be throwing an error?
+    expect(detectType('loki diagram')).toBe('flowchart');
+    registerDiagram(
+      'loki',
+      {
+        db: {},
+        parser: {},
+        renderer: {},
+      },
+      (text: string) => text.includes('loki')
+    );
+    expect(getDiagram('loki')).not.toBeNull();
+    expect(detectType('loki diagram')).toBe('loki');
+  });
+});