Repro #33330: Cumulative count breaks in certain situations (#44671)

e2e/test/scenarios/models/reproductions.cy.spec.js

@@ -1861,3 +1861,52 @@ describe("issue 42355", () => {
       .should("be.visible");
   });
 });
+
+describe("cumulative count - issue 33330", () => {
+  const questionDetails = {
+    name: "33330",
+    query: {
+      "source-table": ORDERS_ID,
+      aggregation: [["cum-count"]],
+      breakout: [["field", ORDERS.CREATED_AT, { "temporal-unit": "month" }]],
+    },
+  };
+
+  beforeEach(() => {
+    restore();
+    cy.signInAsAdmin();
+
+    createQuestion(questionDetails, { visitQuestion: true });
+    cy.findAllByTestId("header-cell")
+      .should("contain", "Created At: Month")
+      .and("contain", "Cumulative count");
+    cy.findAllByTestId("cell-data").should("contain", "June 2022");
+  });
+
+  it("should still work after turning a question into model (metabase#33330-1)", () => {
+    turnIntoModel();
+    cy.findAllByTestId("header-cell")
+      .should("contain", "Created At: Month")
+      .and("contain", "Cumulative count");
+    cy.findAllByTestId("cell-data").should("contain", "June 2022");
+  });
+
+  it("should still work after applying a post-aggregation filter (metabase#33330-2)", () => {
+    filter();
+    cy.findByRole("dialog").within(() => {
+      cy.intercept("POST", "/api/dataset").as("dataset");
+      cy.findByTestId("filter-column-Created At").findByText("Today").click();
+      cy.button("Apply filters").click();
+      cy.wait("@dataset");
+    });
+
+    cy.findByTestId("filter-pill").should("have.text", "Created At is today");
+    cy.findAllByTestId("header-cell")
+      .should("contain", "Created At: Month")
+      .and("contain", "Cumulative count");
+    cy.findAllByTestId("cell-data")
+      .should("have.length", "4")
+      .and("not.be.empty");
+    cy.findByTestId("question-row-count").should("have.text", "Showing 1 row");
+  });
+});