feat: don't display fraction digits on formatted kB

Author: w2sv

modules/common/src/main/kotlin/com/w2sv/common/util/Formatting.kt

@@ -36,7 +36,7 @@ fun formattedFileSize(byteCount: Long, locale: Locale = Locale.getDefault()): St
     }
 
     val format = NumberFormat.getNumberInstance(locale).apply {
-        maximumFractionDigits = 2
+        maximumFractionDigits = if (unitIndex == 0) 0 else 2 // Don't display fraction digits on kB
         minimumFractionDigits = 0
     }
 

modules/common/src/test/kotlin/com/w2sv/common/util/FormattingKtTest.kt

@@ -18,9 +18,9 @@ class FormattingKtTest {
 
         // kB
         assert("1 kB", 1_000)
-        assert("1.05 kB", 1_050)
-        assert("1.23 kB", 1_230)
-        assert("9.95 kB", 9_950)
+        assert("1 kB", 1_050)
+        assert("1 kB", 1_230)
+        assert("10 kB", 9_950)
         assert("10 kB", 10_000)
         assert("999 kB", 999_000)