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Add static chance skills to probability unit tests

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This commit is contained in:
nossr50 2022-12-18 16:49:30 -08:00
parent 59f711834b
commit 4a5e3542ef
3 changed files with 57 additions and 15 deletions
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10
src/main/java/com/gmail/nossr50/util/random/ProbabilityUtil.java
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@ -54,11 +54,11 @@ public class ProbabilityUtil {
return percentageValue; return percentageValue;
} }
static double getStaticRandomChance(@NotNull SubSkillType subSkillType) throws InvalidStaticChance { static Probability getStaticRandomChance(@NotNull SubSkillType subSkillType) throws InvalidStaticChance {
return switch (subSkillType) { return switch (subSkillType) {
case AXES_ARMOR_IMPACT -> mcMMO.p.getAdvancedConfig().getImpactChance(); case AXES_ARMOR_IMPACT -> Probability.ofPercent(mcMMO.p.getAdvancedConfig().getImpactChance());
case AXES_GREATER_IMPACT -> mcMMO.p.getAdvancedConfig().getGreaterImpactChance(); case AXES_GREATER_IMPACT -> Probability.ofPercent(mcMMO.p.getAdvancedConfig().getGreaterImpactChance());
case TAMING_FAST_FOOD_SERVICE -> mcMMO.p.getAdvancedConfig().getFastFoodChance(); case TAMING_FAST_FOOD_SERVICE -> Probability.ofPercent(mcMMO.p.getAdvancedConfig().getFastFoodChance());
default -> throw new InvalidStaticChance(); default -> throw new InvalidStaticChance();
}; };
} }
@ -99,7 +99,7 @@ public class ProbabilityUtil {
return new ProbabilityImpl(xPos, xCeiling, probabilityCeiling); return new ProbabilityImpl(xPos, xCeiling, probabilityCeiling);
case STATIC_CONFIGURABLE: case STATIC_CONFIGURABLE:
try { try {
return Probability.ofPercent(getStaticRandomChance(subSkillType)); return getStaticRandomChance(subSkillType);
} catch (InvalidStaticChance invalidStaticChance) { } catch (InvalidStaticChance invalidStaticChance) {
invalidStaticChance.printStackTrace(); invalidStaticChance.printStackTrace();
} }

4
src/test/java/com/gmail/nossr50/util/random/ProbabilityTest.java
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@ -100,8 +100,8 @@ class ProbabilityTest {
@ParameterizedTest @ParameterizedTest
@MethodSource("provideOfPercentageProbabilitiesForWithinExpectations") @MethodSource("provideOfPercentageProbabilitiesForWithinExpectations")
void testOddsExpectationsOfPercent(Probability probability, double expectedWinPercent) { void testOddsExpectationsOfPercent(Probability probability, double expectedWinPercent) {
// Probabilities are tested 200,000,000 times with a margin of error of 0.01% // Probabilities are tested 2.0 x 10^9 with a margin of error of 0.01%
int iterations = 200000000; double iterations = 2.0e9;
double winCount = 0; double winCount = 0;
for (int i = 0; i < iterations; i++) { for (int i = 0; i < iterations; i++) {

58
src/test/java/com/gmail/nossr50/util/random/ProbabilityUtilTest.java
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@ -1,22 +1,64 @@
package com.gmail.nossr50.util.random; package com.gmail.nossr50.util.random;
import org.bukkit.entity.Player; import com.gmail.nossr50.config.AdvancedConfig;
import com.gmail.nossr50.datatypes.skills.SubSkillType;
import com.gmail.nossr50.mcMMO;
import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test; import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import org.mockito.Mockito; import org.mockito.Mockito;
import java.util.stream.Stream;
import static com.gmail.nossr50.datatypes.skills.SubSkillType.*;
import static org.junit.jupiter.api.Assertions.assertEquals;
class ProbabilityUtilTest { class ProbabilityUtilTest {
// Mocks mcMMO mmoInstance;
Player player; AdvancedConfig advancedConfig;
final static double impactChance = 11D;
final static double greaterImpactChance = 0.007D;
final static double fastFoodChance = 45.5D;
@BeforeEach @BeforeEach
public void setupMocks() { public void setupMocks() throws NoSuchFieldException, IllegalAccessException {
this.player = Mockito.mock(Player.class); this.mmoInstance = Mockito.mock(mcMMO.class);
mcMMO.class.getField("p").set(null, mmoInstance);
this.advancedConfig = Mockito.mock(AdvancedConfig.class);
Mockito.when(mmoInstance.getAdvancedConfig()).thenReturn(advancedConfig);
Mockito.when(advancedConfig.getImpactChance()).thenReturn(impactChance);
Mockito.when(advancedConfig.getGreaterImpactChance()).thenReturn(greaterImpactChance);
Mockito.when(advancedConfig.getFastFoodChance()).thenReturn(fastFoodChance);
} }
@Test private static Stream<Arguments> staticChanceSkills() {
public void testChanceOfSuccessPercentage() { return Stream.of(
// static probability, % of time for success
Arguments.of(AXES_ARMOR_IMPACT, impactChance),
Arguments.of(AXES_GREATER_IMPACT, greaterImpactChance),
Arguments.of(TAMING_FAST_FOOD_SERVICE, fastFoodChance)
);
}
@ParameterizedTest
@MethodSource("staticChanceSkills")
void testStaticChanceSkills(SubSkillType subSkillType, double expectedWinPercent) throws InvalidStaticChance {
// Probabilities are tested 2.0 x 10^9 with a margin of error of 0.01%
double iterations = 2.0e9;
double winCount = 0;
Probability staticRandomChance = ProbabilityUtil.getStaticRandomChance(subSkillType);
for (int i = 0; i < iterations; i++) {
if(staticRandomChance.evaluate()) {
winCount++;
}
}
double successPercent = (winCount / iterations) * 100;
System.out.println(successPercent + ", " + expectedWinPercent);
assertEquals(expectedWinPercent, successPercent, 0.01D);
} }
} }