Added a test for StandardDisplayRules.getStandardRule

1 files changed, 21 insertions, 0 deletions

diff --git a/src/test/java/sevenUnitsGUI/RoundingTest.java b/src/test/java/sevenUnitsGUI/RoundingTest.java
index d5cd669..ddf9cf3 100644
--- a/src/test/java/sevenUnitsGUI/RoundingTest.java
+++ b/src/test/java/sevenUnitsGUI/RoundingTest.java
@@ -18,9 +18,11 @@ package sevenUnitsGUI;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static sevenUnitsGUI.StandardDisplayRules.fixedDecimals;
 import static sevenUnitsGUI.StandardDisplayRules.fixedPrecision;
+import static sevenUnitsGUI.StandardDisplayRules.getStandardRule;
 import static sevenUnitsGUI.StandardDisplayRules.uncertaintyBased;
 
 import java.util.Objects;
@@ -221,6 +223,25 @@ class RoundingTest {
 	}
 	
 	/**
+	 * Tests that {@link StandardDisplayRules#getStandardRule} gets rounding
+	 * rules as intended.
+	 * 
+	 * @since v0.4.0
+	 * @since 2022-07-17
+	 */
+	@Test
+	void testGetStandardRule() {
+		assertEquals(ZERO_DECIMALS, getStandardRule("Round to 0 decimal places"));
+		assertEquals(THREE_SIG_FIGS,
+				getStandardRule("Round to 3 significant figures"));
+		assertEquals(UNCERTAINTY_BASED,
+				getStandardRule("Uncertainty-Based Rounding"));
+		
+		assertThrows(IllegalArgumentException.class,
+				() -> getStandardRule("Not a rounding rule"));
+	}
+	
+	/**
 	 * Tests that the {@code toString()} methods of the three rounding rule
 	 * classes work correctly.
 	 *