Sync Forth (#2871)

This updates the Forth exercise to sync with the problem specifications.

exercises/practice/forth/.meta/config.json

@@ -6,6 +6,7 @@
     "aadityakulkarni",
     "FridaTveit",
     "hgvanpariya",
+    "jagdish-15",
     "jmrunkle",
     "kytrinyx",
     "lemoncurry",

exercises/practice/forth/.meta/tests.toml

@@ -24,6 +24,9 @@ description = "addition -> errors if there is nothing on the stack"
 [06efb9a4-817a-435e-b509-06166993c1b8]
 description = "addition -> errors if there is only one value on the stack"
 
+[1e07a098-c5fa-4c66-97b2-3c81205dbc2f]
+description = "addition -> more than two values on the stack"
+
 [09687c99-7bbc-44af-8526-e402f997ccbf]
 description = "subtraction -> can subtract two numbers"
 
@@ -33,6 +36,9 @@ description = "subtraction -> errors if there is nothing on the stack"
 [b3cee1b2-9159-418a-b00d-a1bb3765c23b]
 description = "subtraction -> errors if there is only one value on the stack"
 
+[2c8cc5ed-da97-4cb1-8b98-fa7b526644f4]
+description = "subtraction -> more than two values on the stack"
+
 [5df0ceb5-922e-401f-974d-8287427dbf21]
 description = "multiplication -> can multiply two numbers"
 
@@ -42,6 +48,9 @@ description = "multiplication -> errors if there is nothing on the stack"
 [8ba4b432-9f94-41e0-8fae-3b3712bd51b3]
 description = "multiplication -> errors if there is only one value on the stack"
 
+[5cd085b5-deb1-43cc-9c17-6b1c38bc9970]
+description = "multiplication -> more than two values on the stack"
+
 [e74c2204-b057-4cff-9aa9-31c7c97a93f5]
 description = "division -> can divide two numbers"
 
@@ -57,12 +66,21 @@ description = "division -> errors if there is nothing on the stack"
 [d5547f43-c2ff-4d5c-9cb0-2a4f6684c20d]
 description = "division -> errors if there is only one value on the stack"
 
+[f224f3e0-b6b6-4864-81de-9769ecefa03f]
+description = "division -> more than two values on the stack"
+
 [ee28d729-6692-4a30-b9be-0d830c52a68c]
 description = "combined arithmetic -> addition and subtraction"
 
 [40b197da-fa4b-4aca-a50b-f000d19422c1]
 description = "combined arithmetic -> multiplication and division"
 
+[f749b540-53aa-458e-87ec-a70797eddbcb]
+description = "combined arithmetic -> multiplication and addition"
+
+[c8e5a4c2-f9bf-4805-9a35-3c3314e4989a]
+description = "combined arithmetic -> addition and multiplication"
+
 [c5758235-6eef-4bf6-ab62-c878e50b9957]
 description = "dup -> copies a value on the stack"
 

exercises/practice/forth/src/test/java/ForthEvaluatorTest.java

@@ -48,6 +48,13 @@ public void testErrorIfAdditionAttemptedWithOneNumberOnTheStack() {
                 .withMessage("Addition requires that the stack contain at least 2 values");
     }
 
+    @Disabled("Remove to run test")
+    @Test
+    public void testAdditionForMoreThanTwoValuesOnTheStack() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 2 3 +")))
+                .containsExactly(1, 5);
+    }
+
     @Disabled("Remove to run test")
     @Test
     public void testTwoNumbersCanBeSubtracted() {
@@ -72,6 +79,13 @@ public void testErrorIfSubtractionAttemptedWithOneNumberOnTheStack() {
                 .withMessage("Subtraction requires that the stack contain at least 2 values");
     }
 
+    @Disabled("Remove to run test")
+    @Test
+    public void testSubtractionForMoreThanTwoValuesOnTheStack() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 12 3 -")))
+                .containsExactly(1, 9);
+    }
+
     @Disabled("Remove to run test")
     @Test
     public void testTwoNumbersCanBeMultiplied() {
@@ -94,6 +108,13 @@ public void testErrorIfMultiplicationAttemptedWithOneNumberOnTheStack() {
                 .withMessage("Multiplication requires that the stack contain at least 2 values");
     }
 
+    @Disabled("Remove to run test")
+    @Test
+    public void testMultiplicationForMoreThanTwoValuesOnTheStack() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 2 3 *")))
+                .containsExactly(1, 6);
+    }
+
     @Disabled("Remove to run test")
     @Test
     public void testTwoNumbersCanBeDivided() {
@@ -130,6 +151,13 @@ public void testErrorIfDivisionAttemptedWithOneNumberOnTheStack() {
                 .withMessage("Division requires that the stack contain at least 2 values");
     }
 
+    @Disabled("Remove to run test")
+    @Test
+    public void testDivisionForMoreThanTwoValuesOnTheStack() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 12 3 /")))
+                .containsExactly(1, 4);
+    }
+
     @Disabled("Remove to run test")
     @Test
     public void testCombinedAdditionAndSubtraction() {
@@ -142,6 +170,18 @@ public void testCombinedMultiplicationAndDivision() {
         assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("2 4 * 3 /"))).containsExactly(2);
     }
 
+    @Disabled("Remove to run test")
+    @Test
+    public void testCombinedMultiplicationAndAddition() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 3 4 * +"))).containsExactly(13);
+    }
+
+    @Disabled("Remove to run test")
+    @Test
+    public void testCombinedAdditionAndMultiplication() {
+        assertThat(forthEvaluator.evaluateProgram(Collections.singletonList("1 3 4 + *"))).containsExactly(7);
+    }
+
     @Disabled("Remove to run test")
     @Test
     public void testDupCopiesAValueOnTheStack() {