Merge pull request #1009 from naoussi/int-to-float

KTLN-876: Convert int to float in Kotlin

Author: davidmartinezbarua

core-kotlin-modules/core-kotlin-numbers-2/src/test/kotlin/com/baeldung/intToFloat/IntToFloatUnitTest.kt

@@ -0,0 +1,47 @@
+package com.baeldung.intToFloat
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import java.math.BigDecimal
+import java.text.NumberFormat
+import java.util.*
+
+class IntToFloatUnitTest {
+
+    @Test
+    fun `convert int to float using toFloat() method`() {
+        val intValue = 12
+        val floatValue = intValue.toFloat()
+
+        assertEquals(12.0f, floatValue)
+    }
+
+    @Test
+    fun `convert int to float using arithmetic`() {
+        val intValue = 12
+        val floatValue = intValue + 0.0f
+
+        assertEquals(12.0f, floatValue)
+    }
+
+    @Test
+    fun `convert int to float using NumberFormat class`() {
+        val intValue = 12
+        val floatValue = convertIntToFloatUsingNumberFormat(intValue)
+        assertEquals(12.0f, floatValue)
+    }
+
+    @Test
+    fun `convert int to float using BigDecimal`() {
+        val intValue = 12
+        val floatValue = BigDecimal(intValue).toFloat()
+
+        assertEquals(12.0f, floatValue)
+    }
+
+}
+
+fun convertIntToFloatUsingNumberFormat(value: Int): Float {
+    val numberFormat = NumberFormat.getInstance(Locale.US)
+    return numberFormat.parse(value.toString()).toFloat()
+}