From bbe7ed491da657835805c64ee57890d5d6f211d2 Mon Sep 17 00:00:00 2001
From: Andreas Troelsen <garbagemule@gmail.com>
Date: Sat, 21 Oct 2023 17:42:57 +0200
Subject: [PATCH] Bulk up the test suite for FormulaManager.

Introduces a couple of tests for the FormulaManager test suite in order
to cover all the methods the class exposes. This means it is no longer
necessary to suppress the "unused" warnings.
---
 .../MobArena/formula/FormulaManagerIT.java    | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/src/test/java/com/garbagemule/MobArena/formula/FormulaManagerIT.java b/src/test/java/com/garbagemule/MobArena/formula/FormulaManagerIT.java
index a2c3d77..069c9f7 100644
--- a/src/test/java/com/garbagemule/MobArena/formula/FormulaManagerIT.java
+++ b/src/test/java/com/garbagemule/MobArena/formula/FormulaManagerIT.java
@@ -129,6 +129,32 @@ public class FormulaManagerIT {
 
     }
 
+    /**
+     * With custom constants, we are manipulating the internal
+     * state of the manager, so we need to use a local subject.
+     */
+    public static class CustomConstants {
+
+        FormulaManager subject;
+
+        @Before
+        public void setup() {
+            subject = FormulaManager.createDefault();
+        }
+
+        @Test
+        public void resolveRegisteredCustomConstant() {
+            subject.registerConstant("pie", 3.14);
+
+            Formula formula = subject.parse("pie * 2");
+            double result = formula.evaluate(arena);
+
+            double expected = 6.28;
+            assertThat(result, equalTo(expected));
+        }
+
+    }
+
     @RunWith(Parameterized.class)
     public static class DefaultVariables {
 
@@ -262,6 +288,54 @@ public class FormulaManagerIT {
 
     }
 
+    /**
+     * With custom operators, we are manipulating the internal
+     * state of the manager, so we need to use a local subject.
+     */
+    public static class CustomOperators {
+
+        FormulaManager subject;
+
+        @Before
+        public void setup() {
+            subject = FormulaManager.createDefault();
+        }
+
+        @Test
+        public void resolveRegisteredCustomUnaryOperator() {
+            subject.registerUnaryOperator("_", 1, a -> a - 1);
+
+            Formula formula = subject.parse("_(1 + 1)");
+            double result = formula.evaluate(arena);
+
+            double expected = 1;
+            assertThat(result, equalTo(expected));
+        }
+
+        @Test
+        public void resolveRegisteredCustomBinaryOperator1() {
+            subject.registerBinaryOperator("?", 1, true, (a, b) -> (a >= 0) ? a : b);
+
+            Formula formula = subject.parse("5 ? 6");
+            double result = formula.evaluate(arena);
+
+            double expected = 5;
+            assertThat(result, equalTo(expected));
+        }
+
+        @Test
+        public void resolveRegisteredCustomBinaryOperator2() {
+            subject.registerBinaryOperator("?", 1, true, (a, b) -> (a >= 0) ? a : b);
+
+            Formula formula = subject.parse("(5 - 10) ? (3 + 3)");
+            double result = formula.evaluate(arena);
+
+            double expected = 6;
+            assertThat(result, equalTo(expected));
+        }
+
+    }
+
     @RunWith(Parameterized.class)
     public static class DefaultUnaryFunctions {