From 594912b51673e0785b18c64b021f456eadc17d3f Mon Sep 17 00:00:00 2001
From: alex <alex@alexloehr.net>
Date: Thu, 08 Oct 2026 15:30:40 +0000
Subject: [PATCH] GS-2555

---
 test/testKursLp.js |  269 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 253 insertions(+), 16 deletions(-)

diff --git a/test/testKursLp.js b/test/testKursLp.js
index 7bcf6a2..b79729b 100644
--- a/test/testKursLp.js
+++ b/test/testKursLp.js
@@ -4,6 +4,8 @@
 const libIlias = require("../lib/libIlias")
 const db = require("../lib/db")
 const testData = require("./data")
+const dayjs = require("dayjs");
+const {auswerten, partitionDates} = require("../lib/libLp");
 
 /////////////////////////////////////////////////////////////////////////
 
@@ -18,24 +20,259 @@
    afterEach(async function () {
    })
 
-    describe("the function getKursUnterobjektLp", function () {
-        it("should deliver the LP for the Kurs Unterobjekte", async function () {
-            const res = await db.getKursUnterobjektLp(kursId)
-            console.table(res)
-            expect(res).to.be.a("array")
-            for(const item of res) {
-                expect(item).to.have.property("obj_id").and.to.be.a("number")
-                expect(item).to.have.property("item_id").and.to.be.a("number")
-                expect(item).to.have.property("lpmode").and.to.be.a("number")
-                expect(item).to.have.property("item_obj_id").and.to.be.a("number")
-                expect(item).to.have.property("usr_id").and.to.be.a("number")
-                expect(item).to.have.property("status").and.to.be.a("number")
-                expect(item).to.have.property("status_changed").and.to.be.a("date")
-            }
-        })
-    })
+   describe("the function getKursUnterobjektLp", function () {
+      it("should deliver the LP for the Kurs Unterobjekte", async function () {
+         const res = await db.getKursUnterobjektLp(kursId)
+         // console.table(res)
+         expect(res).to.be.a("array")
+         for (const item of res) {
+            expect(item).to.have.property("obj_id").and.to.be.a("number")
+            expect(item).to.have.property("item_id").and.to.be.a("number")
+            expect(item).to.have.property("lpmode").and.to.be.a("number")
+            expect(item).to.have.property("item_obj_id").and.to.be.a("number")
+            expect(item).to.have.property("usr_id").and.to.be.a("number")
+            expect(item).to.have.property("status").and.to.be.a("number")
+            expect(item).to.have.property("status_changed").and.to.be.a("date")
+         }
+      })
+   })
 
+   describe("the function getKursLp", function () {
+      it("should return the unified LP of a Kurs", async function () {
+         const res = await db.getKursLp(kursId)
+         console.table(res)
+      })
+   })
 
+   describe('the function partitionDates()', function () {
+
+      const maxDate = dayjs("2025-06-15T12:00:00")
+      const item = (status, date) => ({status, status_changed: date})
+
+      it("should return an object with inside and outside arrays", function () {
+         const res = partitionDates(maxDate, [])
+         expect(res).to.be.an("object")
+         expect(res.inside).to.be.an("array")
+         expect(res.outside).to.be.an("array")
+      })
+
+      it("should put an empty item list into empty arrays", function () {
+         const {inside, outside} = partitionDates(maxDate, [])
+         expect(inside).to.have.lengthOf(0)
+         expect(outside).to.have.lengthOf(0)
+      })
+
+      it("should put all items inside when all are within the last month", function () {
+         const items = [
+            item(0, dayjs(maxDate).subtract(1, "day").toDate()),
+            item(1, dayjs(maxDate).subtract(2, "week").toDate()),
+            item(2, dayjs(maxDate).subtract(3, "week").toDate()),
+         ]
+         const {inside, outside} = partitionDates(maxDate, items)
+         expect(inside).to.have.lengthOf(3)
+         expect(outside).to.have.lengthOf(0)
+      })
+
+      it("should put all items outside when all are older than a month", function () {
+         const items = [
+            item(0, dayjs(maxDate).subtract(2, "month").toDate()),
+            item(1, dayjs(maxDate).subtract(1, "year").toDate()),
+         ]
+         const {inside, outside} = partitionDates(maxDate, items)
+         expect(inside).to.have.lengthOf(0)
+         expect(outside).to.have.lengthOf(2)
+      })
+
+      it("should treat an item exactly one month before maxDate as inside", function () {
+         const it0 = item(0, dayjs(maxDate).subtract(1, "month").toDate())
+         const {inside, outside} = partitionDates(maxDate, [it0])
+         expect(inside).to.deep.equal([it0])
+         expect(outside).to.have.lengthOf(0)
+      })
+
+      it("should treat an item slightly more than one month before maxDate as outside", function () {
+         const it0 = item(0, dayjs(maxDate).subtract(1, "month").subtract(1, "second").toDate())
+         const {inside, outside} = partitionDates(maxDate, [it0])
+         expect(inside).to.have.lengthOf(0)
+         expect(outside).to.deep.equal([it0])
+      })
+
+      it("should treat an item at the same instant as maxDate as inside", function () {
+         const it0 = item(2, maxDate.toDate())
+         const {inside, outside} = partitionDates(maxDate, [it0])
+         expect(inside).to.deep.equal([it0])
+         expect(outside).to.have.lengthOf(0)
+      })
+
+      it("should treat an item after maxDate as inside", function () {
+         const it0 = item(1, dayjs(maxDate).add(1, "day").toDate())
+         const {inside, outside} = partitionDates(maxDate, [it0])
+         expect(inside).to.deep.equal([it0])
+         expect(outside).to.have.lengthOf(0)
+      })
+
+      it("should split a mixed list correctly", function () {
+         const recent = item(2, dayjs(maxDate).subtract(10, "day").toDate())
+         const old = item(3, dayjs(maxDate).subtract(6, "month").toDate())
+         const veryOld = item(1, dayjs(maxDate).subtract(1, "year").toDate())
+         const {inside, outside} = partitionDates(maxDate, [recent, old, veryOld])
+         expect(inside).to.deep.equal([recent])
+         expect(outside).to.deep.equal([old, veryOld])
+      })
+
+      it("should preserve the original item objects", function () {
+         const recent = item(2, dayjs(maxDate).subtract(1, "day").toDate())
+         const old = item(3, dayjs(maxDate).subtract(1, "year").toDate())
+         const {inside, outside} = partitionDates(maxDate, [recent, old])
+         expect(inside[0]).to.equal(recent)
+         expect(outside[0]).to.equal(old)
+      })
+
+      it("should not mutate the input array", function () {
+         const items = [
+            item(0, dayjs(maxDate).subtract(1, "day").toDate()),
+            item(2, dayjs(maxDate).subtract(2, "year").toDate()),
+         ]
+         const copy = items.slice()
+         partitionDates(maxDate, items)
+         expect(items).to.deep.equal(copy)
+      })
+
+   })
+
+   describe('the function auswerten()', function () {
+
+      const recent = () => dayjs().subtract(1, "day").toDate()
+      const stale = () => dayjs().subtract(2, "month").toDate()
+      const item = (status, date) => ({status, status_changed: date})
+      // an "outside" element used to trigger the outside-handling branches
+      const outsideItem = () => item(0, stale())
+
+      /////// Fall 1: no sub statuses
+
+      it("Fall 1: should return 0 for an empty list", function () {
+         expect(auswerten([])).to.equal(0)
+      })
+
+      /////// Fall 2: any 'not passed' (3) -> 3
+
+      it("Fall 2: should return 3 when a 3 is present", function () {
+         expect(auswerten([item(3, recent()), item(2, recent())])).to.equal(3)
+      })
+
+      it("Fall 2: should return 3 when all statuses are 3", function () {
+         expect(auswerten([item(3, recent()), item(3, recent())])).to.equal(3)
+      })
+
+      it("Fall 2: should return 3 for mixed 0,1,2,3", function () {
+         expect(auswerten([item(0, recent()), item(1, recent()), item(2, recent()), item(3, recent())])).to.equal(3)
+      })
+
+      /////// Fall 3: all statuses equal
+
+      it("Fall 3: should return 0 when all are 0 (no outside)", function () {
+         expect(auswerten([item(0, recent()), item(0, recent())])).to.equal(0)
+      })
+
+      it("Fall 3: should return 1 when all are 1 (no outside)", function () {
+         expect(auswerten([item(1, recent()), item(1, recent())])).to.equal(1)
+      })
+
+      it("Fall 3: should return 2 when all are 2 (no outside)", function () {
+         expect(auswerten([item(2, recent()), item(2, recent())])).to.equal(2)
+      })
+
+      it("Fall 3: should return 3 when all are 3 (no outside)", function () {
+         expect(auswerten([item(3, recent()), item(3, recent())])).to.equal(3)
+      })
+
+      it("Fall 3: should return the status of a single status (no outside)", function () {
+         expect(auswerten([item(0, recent())])).to.equal(0)
+         expect(auswerten([item(1, recent())])).to.equal(1)
+         expect(auswerten([item(2, recent())])).to.equal(2)
+         expect(auswerten([item(3, recent())])).to.equal(3)
+      })
+
+      it("Fall 3: should return 1 when all are equal but an outside element exists", function () {
+         expect(auswerten([item(2, recent()), item(2, recent()), outsideItem()])).to.equal(1)
+      })
+
+      /////// Fall 4: something is in progress (1 or 2)
+
+      it("Fall 4: should return 1 for 0,1,0", function () {
+         expect(auswerten([item(0, recent()), item(1, recent()), item(0, recent())])).to.equal(1)
+      })
+
+      it("Fall 4: should return 1 for 2,1,2", function () {
+         expect(auswerten([item(2, recent()), item(1, recent()), item(2, recent())])).to.equal(1)
+      })
+
+      it("Fall 4: should return 1 for 0,2", function () {
+         expect(auswerten([item(0, recent()), item(2, recent())])).to.equal(1)
+      })
+
+      it("Fall 4: should return 1 for 0,1,2", function () {
+         expect(auswerten([item(0, recent()), item(1, recent()), item(2, recent())])).to.equal(1)
+      })
+
+      /////// Fall 5: everything else
+
+      it("Fall 5: should return 0 when only 0 and no 3/1/2 mixed in", function () {
+         expect(auswerten([item(0, recent()), item(0, recent()), item(0, recent())])).to.equal(0)
+      })
+
+      /////// stale dates (outside the one-month ballpark)
+
+      it("stale: should return the status when all items are stale and equal", function () {
+         expect(auswerten([item(2, stale()), item(2, stale())])).to.equal(2)
+      })
+
+      it("stale: should return 1 when all stale items are mixed (0,2)", function () {
+         expect(auswerten([item(0, stale()), item(2, stale())])).to.equal(1)
+      })
+
+      it("stale: should return 3 when all stale items are 3", function () {
+         expect(auswerten([item(3, stale()), item(3, stale())])).to.equal(3)
+      })
+
+      it("stale: should return the status for a single stale item", function () {
+         expect(auswerten([item(2, stale())])).to.equal(2)
+         expect(auswerten([item(3, stale())])).to.equal(3)
+      })
+
+      it("stale: a stale 3 should not force 3 when a recent item exists", function () {
+         expect(auswerten([item(3, stale()), item(2, recent())])).to.equal(1)
+      })
+
+      it("stale: a stale 3 should still force 3 when a recent 3 exists", function () {
+         expect(auswerten([item(3, stale()), item(3, recent())])).to.equal(3)
+      })
+
+      it("stale: should return 1 when all recent statuses are equal but a stale item exists", function () {
+         expect(auswerten([item(0, recent()), item(0, recent()), item(0, stale())])).to.equal(1)
+      })
+
+      it("stale: should return 1 for a recent 2 plus a stale 2", function () {
+         expect(auswerten([item(2, recent()), item(2, stale())])).to.equal(1)
+      })
+
+      it("stale: should ignore a stale item when recent statuses are already mixed", function () {
+         expect(auswerten([item(0, recent()), item(2, recent()), item(0, stale())])).to.equal(1)
+      })
+
+      it("stale: boundary - item just inside the month counts as recent", function () {
+         const now = dayjs()
+         const inside = now.subtract(1, "month").add(1, "day").toDate()
+         expect(auswerten([item(0, now.toDate()), item(0, inside)])).to.equal(0)
+      })
+
+      it("stale: boundary - item just outside the month counts as stale", function () {
+         const now = dayjs()
+         const outside = now.subtract(1, "month").subtract(1, "day").toDate()
+         expect(auswerten([item(0, now.toDate()), item(0, outside)])).to.equal(1)
+      })
+
+   })
 
 })
 

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