Better tests

idea/idea-completion/testData/handlers/basic/stringTemplate/1.kt

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(): String {
     val s = "$<caret>"
 }

idea/idea-completion/testData/handlers/basic/stringTemplate/1.kt.after

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(): String {
     val s = "${foo()<caret>}"
 }

idea/idea-completion/testData/handlers/basic/stringTemplate/2.kt

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(p: String): String {
     val s = "$<caret>"
 }

idea/idea-completion/testData/handlers/basic/stringTemplate/2.kt.after

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(p: String): String {
     val s = "${foo(<caret>)}"
 }

idea/idea-completion/testData/handlers/basic/stringTemplate/3.kt

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(): String {
     val s = "${<caret>}"
 }

idea/idea-completion/testData/handlers/basic/stringTemplate/3.kt.after

@@ -1,3 +1,5 @@
+package ppp
+
 fun foo(): String {
     val s = "${foo()<caret>}"
 }