Refactor checkExoticAndNormalEnergyHatches (#2025)

* add tests to checkExoticAndNormalEnergyHatches

Add a parameterized test to
GT_MetaTileEntity_MultiBlockBase::checkExoticAndNormalEnergyHatches
in order to be sure that the function returns the same results after
the change.

* refactor checkExoticAndNormalEnergyHatches

1 files changed, 46 insertions, 0 deletions

diff --git a/src/test/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_MultiBlockBaseTest.java b/src/test/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_MultiBlockBaseTest.java
new file mode 100644
index 0000000000..a6f874b956
--- /dev/null
+++ b/src/test/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_MultiBlockBaseTest.java
@@ -0,0 +1,46 @@
+package gregtech.api.metatileentity.implementations;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.ArrayList;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+import org.mockito.Answers;
+import org.mockito.Mockito;
+
+/**
+ * Tests some functions of {@link GT_MetaTileEntity_MultiBlockBase}.
+ * <p>
+ * The classes and tests are non-public because JUnit5
+ * <a href="https://junit.org/junit5/docs/snapshot/user-guide/#writing-tests-classes-and-methods">recommends</a>
+ * to omit the {@code public} modifier.
+ */
+@SuppressWarnings("NewClassNamingConvention") /*
+                                               * The name of the original class does not fit the convention,
+                                               * but refactoring that is a story for another time.
+                                               */
+class GT_MetaTileEntity_MultiBlockBaseTest {
+
+    @ParameterizedTest
+    @CsvSource({ "0,0,false", "2,0,false", "1,0,true", "1,1,false", "0,1,true", "0,2,true", "0,3,false" })
+    void checkExoticAndNormalEnergyHatches_parametrizedTest(int exoticEnergyHatchesCount, int normalEnergyHatchesCount,
+        boolean expectedResult) {
+        GT_MetaTileEntity_MultiBlockBase testedClassInstance = Mockito
+            .mock(GT_MetaTileEntity_MultiBlockBase.class, Answers.CALLS_REAL_METHODS);
+
+        testedClassInstance.setEnergyHatches(fillList(GT_MetaTileEntity_Hatch_Energy.class, normalEnergyHatchesCount));
+        testedClassInstance.setExoticEnergyHatches(fillList(GT_MetaTileEntity_Hatch.class, exoticEnergyHatchesCount));
+
+        assertEquals(expectedResult, testedClassInstance.checkExoticAndNormalEnergyHatches());
+    }
+
+    private <T> ArrayList<T> fillList(Class<T> classData, int returnedListSize) {
+        T objectToInsert = Mockito.mock(classData);
+        ArrayList<T> listToReturn = new ArrayList<>();
+        for (int i = 0; i < returnedListSize; i++) {
+            listToReturn.add(objectToInsert);
+        }
+        return listToReturn;
+    }
+}