From 0c97a682f46d058c18b5e902db2ffd40add7e2fa Mon Sep 17 00:00:00 2001
From: Andrew Stein <steinlink@gmail.com>
Date: Sun, 6 Mar 2022 16:04:48 -0500
Subject: [PATCH] Add tests

---
 .gitignore                             |  4 --
 packages/perspective/test/js/pivots.js | 62 ++++++++++++++++++++++++++
 2 files changed, 62 insertions(+), 4 deletions(-)

diff --git a/.gitignore b/.gitignore
index 4d94e088d3..4ed4abdc1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -191,7 +191,3 @@ packages/perspective-jupyterlab/test/config/jupyter/lab
 packages/perspective-jupyterlab/test/config/jupyter/migrated
 docs/static/features
 results.debug.json
-
-boost*
-
-.vs
diff --git a/packages/perspective/test/js/pivots.js b/packages/perspective/test/js/pivots.js
index b4e4206938..ce44d2787c 100644
--- a/packages/perspective/test/js/pivots.js
+++ b/packages/perspective/test/js/pivots.js
@@ -348,6 +348,68 @@ module.exports = (perspective) => {
             table.delete();
         });
 
+        it("['z'], last_minus_first", async function () {
+            var table = await perspective.table(
+                [
+                    {x: 1, y: "a", z: true},
+                    {x: 2, y: "b", z: false},
+                    {x: 3, y: "c", z: true},
+                    {x: 4, y: "d", z: false},
+                ],
+                {index: "y"}
+            );
+            var view = await table.view({
+                group_by: ["z"],
+                columns: ["x"],
+                aggregates: {x: "last minus first"},
+            });
+            const answer = [
+                {__ROW_PATH__: [], x: -1},
+                {__ROW_PATH__: [false], x: 2},
+                {__ROW_PATH__: [true], x: -2},
+            ];
+            table.update({
+                x: [5],
+                y: ["a"],
+                z: [true],
+            });
+            const result = await view.to_json();
+            expect(result).toEqual(answer);
+            view.delete();
+            table.delete();
+        });
+
+        it("['z'], high_minus_low", async function () {
+            var table = await perspective.table(
+                [
+                    {x: 1, y: "a", z: true},
+                    {x: 2, y: "b", z: false},
+                    {x: 3, y: "c", z: true},
+                    {x: 4, y: "d", z: false},
+                ],
+                {index: "y"}
+            );
+            var view = await table.view({
+                group_by: ["z"],
+                columns: ["x"],
+                aggregates: {x: "high minus low"},
+            });
+            const answer = [
+                {__ROW_PATH__: [], x: 3},
+                {__ROW_PATH__: [false], x: 2},
+                {__ROW_PATH__: [true], x: 2},
+            ];
+            table.update({
+                x: [5],
+                y: ["a"],
+                z: [true],
+            });
+            const result = await view.to_json();
+            expect(result).toEqual(answer);
+            view.delete();
+            table.delete();
+        });
+
         it("['z'], first by index with partial updates", async function () {
             var table = await perspective.table(data, {index: "y"});
             var view = await table.view({