From b5d09dba20573c431a9f21795ac90547631caae7 Mon Sep 17 00:00:00 2001
From: Marius Peter <dev@marius-peter.com>
Date: Sat, 1 Nov 2025 13:00:05 +0100
Subject: Test directory should mirror top-level hierarchy.

---
 tests/models/nutrient-measurement.rkt | 69 +++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 tests/models/nutrient-measurement.rkt

(limited to 'tests/models/nutrient-measurement.rkt')

diff --git a/tests/models/nutrient-measurement.rkt b/tests/models/nutrient-measurement.rkt
new file mode 100644
index 0000000..010c812
--- /dev/null
+++ b/tests/models/nutrient-measurement.rkt
@@ -0,0 +1,69 @@
+#lang racket
+
+(module+ test
+  (require rackunit
+           rackunit/text-ui
+           "../db/conn.rkt"
+           "../db/migrations.rkt"
+           "../models/nutrient.rkt"
+           "../models/nutrient-measurement.rkt")
+
+  (define measurement-date "2025-09-01")
+
+  (run-tests
+   (test-suite
+    "Nutrient measurement model"
+    #:before (λ ()
+               (connect! #:path 'memory)
+               ;; (connect! #:path "test.sqlite3")
+               (migrate-all!)
+               (create-nutrient! "Nitrogen" "N")
+               (create-nutrient! "Phosphorus" "P")
+               (create-nutrient! "Potassium" "K"))
+    #:after (λ ()
+              (disconnect!))
+
+    (test-case "Create measurement with date and values"
+      (define nitrogen (get-nutrient #:name "Nitrogen"))
+      (define phosphorus (get-nutrient #:name "Phosphorus"))
+      (create-nutrient-measurement! measurement-date
+                                    `((,nitrogen . 12.3)
+                                      (,phosphorus . 4.5)))
+      (check-equal? (length (get-nutrient-measurements)) 1)
+      (define nm (get-nutrient-measurement #:measured-on measurement-date))
+      (check-true (nutrient-measurement? nm))
+      (check-equal? (nutrient-measurement-date nm) measurement-date))
+
+    (test-case "Check all measurement values"
+      (define nitrogen (get-nutrient #:name "Nitrogen"))
+      (define phosphorus (get-nutrient #:name "Phosphorus"))
+
+      (define nm (get-nutrient-measurement #:measured-on measurement-date))
+      (check-equal? (get-nutrient-measurement-value nm nitrogen) 12.3)
+      (check-equal? (get-nutrient-measurement-value nm phosphorus) 4.5)
+
+      (define nmv (nutrient-measurement-values nm))
+      (check-equal? (get-nutrient-measurement-values nm) nmv
+                    "return value of get-nutrient-measurement-values ≠ nutrient-measurement-values struct accessor")
+      (check-equal? (length nmv) 2)
+      (check-equal? (cdr (assoc nitrogen nmv)) 12.3)
+      (check-equal? (cdr (assoc phosphorus nmv)) 4.5))
+
+    (test-case "Retrieve latest measurement values"
+      (define nitrogen (get-nutrient #:name "Nitrogen"))
+      (define phosphorus (get-nutrient #:name "Phosphorus"))
+      (define second-measurement-date "2025-09-02")
+      (create-nutrient-measurement! second-measurement-date
+                                    `((,nitrogen . 6.7)
+                                      (,phosphorus . 8.9)))
+
+      (check-equal? (get-latest-nutrient-measurement-value nitrogen) 6.7)
+      (check-equal? (get-latest-nutrient-measurement-value phosphorus) 8.9))
+
+    (test-case "Delete measurement and cascade to measurement values"
+      (define nm (get-nutrient-measurement #:measured-on measurement-date))
+      (delete-nutrient-measurement! nm)
+      (check-false (get-nutrient-measurement #:id (nutrient-measurement-id nm)))
+      (check-equal? (length (get-nutrient-measurements)) 1
+                    "wrong number of nutrient measurements were deleted")
+      (check-true (null? (get-nutrient-measurement-values nm)))))))
-- 
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