IDEA-160784 Migration to Stream API: replace with Stream.count() when possible

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterCountArray.java

@@ -0,0 +1,10 @@
+// "Replace with count()" "true"
+
+import java.util.Arrays;
+
+public class Main {
+  public long test(String[] array) {
+      long longStrings = Arrays.stream(array).map(String::trim).filter(trimmed -> trimmed.length() > 10).count();
+      return longStrings;
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterCountInner.java

@@ -0,0 +1,14 @@
+// "Replace with count()" "true"
+import java.util.List;
+import java.util.Set;
+
+public class Main {
+  public void test(List<Set<String>> nested) {
+    int count = 0;
+    for(Set<String> element : nested) {
+      if(element != null) {
+          count += element.stream().filter(str -> str.startsWith("xyz")).count();
+      }
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterCountOuter.java

@@ -0,0 +1,10 @@
+// "Replace with count()" "true"
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+
+public class Main {
+  public void test(List<Set<String>> nested) {
+      int count = (int) nested.stream().filter(element -> element != null).flatMap(Collection::stream).filter(str -> str.startsWith("xyz")).count();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCountArray.java

@@ -0,0 +1,14 @@
+// "Replace with count()" "true"
+
+public class Main {
+  public long test(String[] array) {
+    long longStrings = 0;
+    for(String str : a<caret>rray) {
+      String trimmed = str.trim();
+      if(trimmed.length() > 10) {
+        longStrings++;
+      }
+    }
+    return longStrings;
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCountInner.java

@@ -0,0 +1,18 @@
+// "Replace with count()" "true"
+import java.util.List;
+import java.util.Set;
+
+public class Main {
+  public void test(List<Set<String>> nested) {
+    int count = 0;
+    for(Set<String> element : nested) {
+      if(element != null) {
+        for(String str : eleme<caret>nt) {
+          if(str.startsWith("xyz")) {
+            count++;
+          }
+        }
+      }
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCountOuter.java

@@ -0,0 +1,18 @@
+// "Replace with count()" "true"
+import java.util.List;
+import java.util.Set;
+
+public class Main {
+  public void test(List<Set<String>> nested) {
+    int count = 0;
+    for(Set<String> element : neste<caret>d) {
+      if(element != null) {
+        for(String str : element) {
+          if(str.startsWith("xyz")) {
+            count++;
+          }
+        }
+      }
+    }
+  }
+}