Improve formatting of variable declarations/assignments.

pkg/analyzer/test/services/data/wrap_tests.data

Index: pkg/analyzer/test/services/data/wrap_tests.data
diff --git a/pkg/analyzer/test/services/data/wrap_tests.data b/pkg/analyzer/test/services/data/wrap_tests.data
index 9d21517232f34f0fb9d8ce74d391e03760aacb65..87bcfab07e37572e30df6586e9f650117e0de177 100644
--- a/pkg/analyzer/test/services/data/wrap_tests.data
+++ b/pkg/analyzer/test/services/data/wrap_tests.data
@@ -10,15 +10,75 @@ main() {
       c0123456789012345,
       d0123456789012345];
 }
->>> operators
+>>> assignment - initializer doesn't fit one line, wrap inside, keep name
 main() {
-  int result = a0123456789012345 * b0123456789012345 + c0123456789012345 * d0123456789012345;
+  result = myFunction(a0123456789012345 * b0123456789012345, c0123456789012345 * d0123456789012345);
+}
+<<<
+main() {
+  result = myFunction(
+      a0123456789012345 * b0123456789012345,
+      c0123456789012345 * d0123456789012345);
+}
+>>> assignment - initializer fits one line
+main() {
+  variableLoooooooooooooooong = functionLoooooooooooooooooooooooooooooooooooooong(1, 2, 3, 4);
+}
+<<<
+main() {
+  variableLoooooooooooooooong =
+      functionLoooooooooooooooooooooooooooooooooooooong(1, 2, 3, 4);
+}
+>>> assignment - initializer doesn't fit one line, name too long
+main() {
+  variableLooooooooooooooooooong = functionLoooooooooooooooooooooooooooooooooooong(a0123456789012345 * b0123456789012345, c0123456789012345 * d0123456789012345);
+}
+<<<
+main() {
+  variableLooooooooooooooooooong =
+      functionLoooooooooooooooooooooooooooooooooooong(
+          a0123456789012345 * b0123456789012345,
+          c0123456789012345 * d0123456789012345);
+}
+>>> variable declaration - initializer doesn't fit one line, wrap inside, keep name
+main() {
+  var result = myFunction(a0123456789012345 * b0123456789012345, c0123456789012345 * d0123456789012345);
+}
+<<<
+main() {
+  var result = myFunction(
+      a0123456789012345 * b0123456789012345,
+      c0123456789012345 * d0123456789012345);
+}
+>>> variable declaration - initializer fits one line
+main() {
+  var variableLoooooooooooooooong = functionLoooooooooooooooooooooooooooooooooooong(1, 2, 3, 4);
+}
+<<<
+main() {
+  var variableLoooooooooooooooong =
+      functionLoooooooooooooooooooooooooooooooooooong(1, 2, 3, 4);
+}
+>>> variable declaration - initializer doesn't fit one line, name too long
+main() {
+  var variableLoooooooooooooooong = functionLoooooooooooooooooooooooooooooooooooong(a0123456789012345 * b0123456789012345, c0123456789012345 * d0123456789012345);
+}
+<<<
+main() {
+  var variableLoooooooooooooooong =
+      functionLoooooooooooooooooooooooooooooooooooong(
+          a0123456789012345 * b0123456789012345,
+          c0123456789012345 * d0123456789012345);
+}
+>>> variable declaration - with binary expression
+main() {
+  int result = a01234567890123456789 * b01234567890123456789 + c01234567890123456789 * d01234567890123456789;
 }
 <<<
 main() {
   int result =
-      a0123456789012345 * b0123456789012345 +
-      c0123456789012345 * d0123456789012345;
+      a01234567890123456789 * b01234567890123456789 +
+      c01234567890123456789 * d01234567890123456789;
 }
 >>> arguments
 main() {