--- a/src/layout/Layout.test.ts	Sat Mar 19 16:37:29 2022 -0700
+++ b/src/layout/Layout.test.ts	Sat Mar 19 17:23:04 2022 -0700
@@ -41,6 +41,12 @@
     const layout = new Layout(vc);
     const lr = layout.plan(await twoStatements());
   });
+  it("returns no sections for empty graph", () => {
+    const vc = new ViewConfig();
+    const layout = new Layout(vc);
+    const lr = layout.plan(new Store());
+    expect(lr.sections).toHaveLength(0);
+  });
   it("defaults to putting all triples in the ungrouped list", async () => {
     const layout = new Layout();
     const lr = layout.plan(await twoStatements());
@@ -106,71 +112,38 @@
       });
     });
   });
+  it("makes two tables", async () => {
+    const vc = new ViewConfig();
+    await vc.readFromGraph(`
+      @prefix ex: <http://example.com/> .
+      @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+      @prefix : <http://example.com/> .
+
+      <> a :View; :table [ :primaryType :T1 ], [ :primaryType :T2 ] .`);
+    const layout = new Layout(vc);
+    const lr = layout.plan(await typedStatements());
+    expect(lr.sections).toHaveLength(2);
+    expect(lr.sections[0]).toEqual({
+      columnHeaders: [
+        { rdfType: EX("T1"), pred: EX("color") },
+        { rdfType: EX("T1"), pred: EX("size") },
+      ],
+      rowHeaders: [EX("a"), EX("b"), EX("c"), EX("e")],
+      rows: [
+        [[EX("red")], []],
+        [[EX("blue")], []],
+        [[], []],
+        [[], [EX("small")]],
+      ],
+    });
+    expect(lr.sections[1]).toEqual({
+      columnHeaders: [{ rdfType: EX("T2"), pred: EX("size") }],
+      rowHeaders: [EX("d"), EX("e")],
+      rows: [
+        [[EX("big")]], //
+        [[EX("small")]],
+      ],
+    });
+  });
   it.skip("makes a table out of ungrouped triples with the same type", async () => {});
 });
-
-// describe("equality", () => {
-//   test("investigation of https://github.com/rdfjs/N3.js/issues/265", () => {
-//     const x = namedNode("x");
-//     const x2 = namedNode("x");
-//     // (NamedNode.prototype as any).hashCode = () => 0;
-//     // expect((x as any).hashCode()).toEqual((x2 as any).hashCode())
-//     expect(x === x2).toBeFalsy();
-//     expect(x == x2).toBeFalsy();
-//     expect(x.equals(x2)).toBeTruthy();
-//     let imap = Immutable.Map();
-//     imap = imap.set(x, 11);
-//     imap = imap.set(x, 22);
-//     imap = imap.set(x2, 33);
-//     expect(imap.has(x)).toBeTruthy();
-//     expect(imap.has(x2)).toBeTruthy();
-//     expect(imap.size).toEqual(1);
-//   });
-// });
-
-// describe("groupByRdfType", () => {
-//   test("finds multiple graphs", () => {});
-//   test("works", async () => {
-//     const store = new Store();
-
-//     const parser = new Parser();
-//     await new Promise((res, rej) => {
-//       parser.parse(
-//         `PREFIX : <urn:>
-//         :rs1 a :Foo; :pred1 "obj1" .
-//         :rs2 a :Foo; :pred1 "obj2" .
-//         :rs3 a :Bar .
-//         :rs4 :pred1 "obj4" .
-// `,
-//         (error, quad: Quad, prefixes: Prefixes) => {
-//           if (quad) {
-//             store.addQuad(quad);
-//           } else {
-//             res(undefined);
-//           }
-//         }
-//       );
-//     });
-//     const grouped = groupByRdfType(store);
-//     expect(Array.from(grouped.byType.keys())).toHaveLength(2);
-//     expect(grouped.byType.get(namedNode("urn:Foo"))).toEqual(
-//       Immutable.Set([namedNode("urn:rs1"), namedNode("urn:rs2")])
-//     );
-//     expect(grouped.byType.get(namedNode("urn:Bar"))).toEqual(
-//       Immutable.Set([namedNode("urn:rs3")])
-//     );
-//     expect(grouped.untypedSubjs).toEqual([namedNode("urn:rs4")]);
-//   });
-
-//   describe("MultiSubjsTypeBlockLayout", () => {
-//     test("gathers subjs", () => {
-
-//     });
-//     test("gathers preds", () => {
-
-//     });
-//     test("cells reports filled cells", () => {
-
-//     });
-//   });
-// });