IDEA-209947 Better type constraint explanation

GitOrigin-RevId: bc97ff49908ffee155459fb81dc5e46e4fb12c59

java/java-tests/testData/inspection/dataFlow/tracker/InstanceOfChain.java

@@ -0,0 +1,17 @@
+/*
+Value is always false (s instanceof String)
+  An object is known to be Number which is definitely incompatible with String (s)
+    Type of 's' is known from line #10 (s instanceof Number)
+ */
+import java.util.List;
+
+class Test {
+  void test(Object s) {
+    if (s instanceof Number) {
+      if (s instanceof Integer) {
+        if (<selection>s instanceof String</selection>){
+        }
+      }
+    }
+  }
+}

java/java-tests/testData/inspection/dataFlow/tracker/InstanceOfChain2.java

@@ -0,0 +1,21 @@
+/*
+Value is always true (s instanceof RandomAccess)
+  An object is already known to be ArrayList which is a subtype of RandomAccess (s)
+    Type of 's' is known from line #12 (s instanceof ArrayList)
+ */
+import java.util.*;
+
+class Test {
+  void test(Object s) {
+    if (s instanceof Map) {
+      if (s instanceof List) {
+        if (s instanceof ArrayList) {
+          if (s instanceof CharSequence) {
+            if (<selection>s instanceof RandomAccess</selection>){
+            }
+          }
+        }
+      }
+    }
+  }
+}

java/java-tests/testData/inspection/dataFlow/tracker/InstanceOfConflict.java

@@ -1,6 +1,6 @@
 /*
 Value is always false (s instanceof Integer)
-  Type of 's' is exactly String (s)
+  An object type is exactly String which is not a subtype of Integer (s)
     Type of 's' is known from line #10 (s instanceof String)
  */
 import java.util.List;

java/java-tests/testData/inspection/dataFlow/tracker/InstanceOfPreviousCast.java

@@ -0,0 +1,16 @@
+/*
+Value is always true (s instanceof String)
+  An object is already known to be String (s)
+    Type of 's' is known from line #10 ((String)s)
+ */
+import java.util.List;
+
+class Test {
+  void test(Object s) {
+    System.out.println(((String)s).trim());
+    
+    
+    if (<selection>s instanceof String</selection>) {
+    }
+  }
+}

java/java-tests/testData/inspection/dataFlow/tracker/InstanceOfRedundant.java

@@ -1,6 +1,6 @@
 /*
 Value is always true (s instanceof CharSequence)
-  Type of 's' is exactly String (s)
+  An object type is exactly String which is a subtype of CharSequence (s)
     Type of 's' is known from line #10 (s instanceof String)
  */
 import java.util.List;

java/java-tests/testData/inspection/dataFlow/tracker/NotInstanceOf.java

@@ -0,0 +1,17 @@
+/*
+Value is always false (s instanceof String)
+  An object is known to be not CharSequence which is a supertype of String (s)
+    Type of 's' is known from line #10 (s instanceof CharSequence)
+ */
+import java.util.List;
+
+class Test {
+  void test(Object s) {
+    if (!(s instanceof CharSequence)) {
+      if (s instanceof Integer) {
+        if (<selection>s instanceof String</selection>){
+        }
+      }
+    }
+  }
+}