Test cases for float to BigDecimal conversion - first commit

convert-float-to-bigdecimal/README.md

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+## Shallow vs Deep Copy
+
+This module contains an article about converting float to BigDecimal in Java
+
+### Relevant articles:
+
+- [Converting from Float to BigDecimal in Java](https://drafts.baeldung.com/?p=175240&preview=true)

convert-float-to-bigdecimal/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>convert-float-to-bigdecimal</artifactId>
+	<name>convert-float-to-bigdecimal</name>
+	<packaging>jar</packaging>
+
+	<parent>
+		<groupId>com.baeldung</groupId>
+		<artifactId>parent-modules</artifactId>
+		<version>1.0.0-SNAPSHOT</version>
+	</parent>
+
+</project>

convert-float-to-bigdecimal/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+	<appender name="STDOUT"
+		class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+			</pattern>
+		</encoder>
+	</appender>
+
+	<root level="INFO">
+		<appender-ref ref="STDOUT" />
+	</root>
+</configuration>

convert-float-to-bigdecimal/src/test/java/com/baeldung/convertfloattobigdecimal/ConvertFloatToBigDecimalUnitTest.java

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+package com.baeldung.convertfloattobigdecimal;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.math.BigDecimal;
+
+import org.junit.jupiter.api.Test;
+
+class ConvertFloatToBigDecimalUnitTest {
+
+    @Test
+    public void whenFloatComparedWithDifferentValues_thenCouldMatch() {
+        assertNotEquals(1.1f, 1.09f);
+        assertEquals(1.1f, 1.09999999f);
+    }
+
+    @Test
+    public void whenCreatedFromFloat_thenCouldNotMatch() {
+        float floatToConvert = 0.5f;
+        BigDecimal bdFromFloat = new BigDecimal(floatToConvert);
+        assertEquals("0.5", bdFromFloat.toString());
+        floatToConvert = 1.1f;
+        bdFromFloat = new BigDecimal(floatToConvert);
+        assertNotEquals("1.1", bdFromFloat.toString());
+    }
+
+    @Test
+    public void whenCreatedFromString_thenMatches() {
+        String floatValue = Float.toString(1.1f);
+        BigDecimal bdFromString = new BigDecimal(floatValue);
+        assertEquals("1.1", bdFromString.toString());
+    }
+
+    @Test
+    public void whenCreatedByValueOfAndIsFloat_thenDoesNotMatch() {
+        float floatToConvert = 1.1f;
+        BigDecimal bdByValueOf = BigDecimal.valueOf(floatToConvert);
+        assertNotEquals("1.1", bdByValueOf.toString());
+    }
+
+    @Test
+    public void whenCreatedByValueOfAndIsDouble_thenMatches() {
+        double doubleToConvert = 1.1d;
+        BigDecimal bdByValueOf = BigDecimal.valueOf(doubleToConvert);
+        assertEquals("1.1", bdByValueOf.toString());
+    }
+}