UiInterceptors: ability to intercept UI components in tests and emulate user action

Currently only popup chooser is supported
A usage example added for AddExceptionToExistingCatchTest

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/afterReplace_Choose_C.java

@@ -0,0 +1,16 @@
+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class A extends Exception {}
+class B extends A {}
+class C extends A {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      throw new A();
+    } catch (B e) {
+    } catch (A e) {
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/afterSeveralCatches_Choose_X.java

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+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class X extends RuntimeException {}
+class Y extends RuntimeException {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      try {
+        throw new IOException();
+      }
+      catch (X | IOException x) {
+      }
+    }
+    catch (Y y) {
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/afterSeveralCatches_Choose_Y.java

@@ -0,0 +1,19 @@
+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class X extends RuntimeException {}
+class Y extends RuntimeException {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      try {
+        throw new IOException();
+      }
+      catch (X x) {
+      }
+    }
+    catch (Y | IOException y) {
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/beforeReplace_Choose_C.java

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+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class A extends Exception {}
+class B extends A {}
+class C extends A {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      throw new A<caret>();
+    } catch (B e) {
+    } catch (C e) {
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/beforeSeveralCatches_Choose_X.java

@@ -0,0 +1,19 @@
+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class X extends RuntimeException {}
+class Y extends RuntimeException {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      try {
+        throw new <caret>IOException();
+      }
+      catch (X x) {
+      }
+    }
+    catch (Y y) {
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addExceptionToExistingCatch/beforeSeveralCatches_Choose_Y.java

@@ -0,0 +1,19 @@
+// "Add exception to existing catch clause" "true"
+import java.io.IOException;
+
+class X extends RuntimeException {}
+class Y extends RuntimeException {}
+
+class Test {
+  public static void main(String[] args) {
+    try {
+      try {
+        throw new <caret>IOException();
+      }
+      catch (X x) {
+      }
+    }
+    catch (Y y) {
+    }
+  }
+}