✅ Add ThcConcentrationTest

Signed-off-by: Leonardo Colman Lopes <[email protected]>

app/src/test/kotlin/br/com/colman/petals/withdrawal/data/ThcConcentrationTest.kt

@@ -0,0 +1,31 @@
+package br.com.colman.petals.withdrawal.data
+
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.matchers.collections.shouldBeMonotonicallyDecreasing
+import io.kotest.matchers.shouldBe
+import java.time.Duration.ofDays
+
+class ThcConcentrationTest : FunSpec({
+
+  val target = ThcConcentrationDataPoints
+
+  test("Should match the snapshot") {
+    val snapshot = mapOf(
+      ofDays(0) to 250.0,
+      ofDays(1) to 175.0,
+      ofDays(2) to 125.0,
+      ofDays(3) to 100.0,
+      ofDays(4) to 75.0,
+      ofDays(7) to 50.0,
+      ofDays(10) to 45.0,
+      ofDays(14) to 25.0,
+      ofDays(20) to 0.0
+    )
+
+    target shouldBe snapshot
+  }
+
+  test("Should be monotonically decreasing") {
+    target.toSortedMap().values.shouldBeMonotonicallyDecreasing()
+  }
+})