#1331 - ENH: Support Aggregation formula with findSingleAttribute() ... max, min, avg, count and count(distinct ..)

src/test/java/io/ebeaninternal/server/deploy/FormulaPropertyPathTest.java

@@ -0,0 +1,35 @@
+package io.ebeaninternal.server.deploy;
+
+import io.ebean.BaseTestCase;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class FormulaPropertyPathTest extends BaseTestCase {
+
+  //private BeanDescriptor<Customer> customerDesc = getBeanDescriptor(Customer.class);
+
+  @Test
+  public void isFormula() {
+
+    assertFormula("max(foo)", "max", "foo");
+    assertFormula("min(bar)", "min", "bar");
+    assertFormula("avg(baz)", "avg", "baz");
+  }
+
+  @Test
+  public void isFormula_count() {
+    assertFormula("count(moo)", "count", "moo");
+    assertFormula("count(distinct joo)", "count", "joo");
+  }
+
+  private void assertFormula(String input, String aggType, String baseProperty) {
+
+    FormulaPropertyPath propertyPath = new FormulaPropertyPath(input);
+
+    assertThat(propertyPath.isFormula()).isTrue();
+    assertThat(propertyPath.basePropertyName()).isEqualTo(baseProperty);
+    assertThat(propertyPath.aggType()).isEqualTo(aggType);
+
+  }
+}