OptionalIsPresentInspection: simplify isRaw() and isOptionalLambdaCandidate(); fix getComments(); add more tests (IDEA-CR-13980)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/afterAssignmentMap.java

@@ -5,7 +5,9 @@ import java.util.*;
 public class Main {
   public void testOptional(Optional<String> str) {
     String val;
-      val = str.map(String::trim).orElse("");
+      val = str.map( // line comment
+              // another line comment
+         /* block comment *//*block comment*/String::trim).orElse("");
     System.out.println(val);
   }
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/afterReturnComments.java

@@ -12,6 +12,6 @@ public class Main {
 
   public Number testOptionalComments(Optional<MyList> strList) {
     /* optional is present *//* optional is absent */
-      return strList.map(/*return something */myList -> myList.size() > /*too big*/ 1 ? myList.get(1) : 1.0).orElse(/* return null*/null);
+      return strList.map( /*return something */ myList -> myList.size() > /*too big*/ 1 ? myList.get(1) : 1.0).orElse( /* return null*/ null);
   }
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/beforeAssignmentMap.java

@@ -6,7 +6,9 @@ public class Main {
   public void testOptional(Optional<String> str) {
     String val;
     if (str.isPrese<caret>nt()) {
-      val = str.get().trim();
+      val = // line comment
+      // another line comment
+        str.get().trim() /* block comment *//*block comment*/;
     } else {
       val = "";
     }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/beforeReturnNonFinalUsed.java

@@ -0,0 +1,14 @@
+// "Replace Optional.isPresent() condition with map().orElse()" "false"
+
+import java.util.*;
+
+public class Main {
+  public String testOptional(Optional<String> str) {
+    int i = 5;
+    if (Math.random() > 0.5) i = 6;
+    if (str.isPre<caret>sent()) {
+      return str.get().substring(i);
+    }
+    return "";
+  }
+}