Start working with spaces:

KT-1532 IDEA should remove extra whitespaces when reformmating code
KT-1378 Code formatting: spaces around ':'

#KT-1532 fixed
#KT-1378 fixed

idea/testData/formatter/SpaceAroundTypeColon.kt

@@ -0,0 +1,9 @@
+import java.util.ArrayList
+import java.lang.Iterable
+
+class Some :java.util.ArrayList<Int>() {
+  fun some<T : Iterable<Int>>(array: Array<String>)    :    Int {
+    val test:Int = 12
+    return test
+  }
+}

idea/testData/formatter/SpaceAroundTypeColon_after.kt

@@ -0,0 +1,9 @@
+import java.util.ArrayList
+import java.lang.Iterable
+
+class Some :java.util.ArrayList<Int>() {
+    fun some<T :Iterable<Int>>(array :Array<String>) :Int {
+        val test :Int = 12
+        return test
+    }
+}