RoleValidatorsComposer composite several RoleValidators together

Issue-ID: VID-758

Change-Id: I7bd5a4ebc8a0a451716af09cc76e6db6cd5362f7
Signed-off-by: Ittay Stern <ittay.stern@att.com>

2 files changed, 126 insertions, 0 deletions

diff --git a/vid-app-common/src/main/java/org/onap/vid/roles/RoleValidatorsComposer.kt b/vid-app-common/src/main/java/org/onap/vid/roles/RoleValidatorsComposer.kt
new file mode 100644
index 000000000..873622389
--- /dev/null
+++ b/vid-app-common/src/main/java/org/onap/vid/roles/RoleValidatorsComposer.kt
@@ -0,0 +1,16 @@
+package org.onap.vid.roles
+
+class RoleValidatorsComposer(private vararg val roleValidators: RoleValidator) : RoleValidator {
+
+    constructor(roleValidators: Collection<RoleValidator>) : this(*roleValidators.toTypedArray())
+
+    override fun isServicePermitted(p: WithPermissionProperties): Boolean =
+            roleValidators.any { it.isServicePermitted(p) }
+
+    override fun isSubscriberPermitted(subscriberName: String?): Boolean =
+            roleValidators.any { it.isSubscriberPermitted(subscriberName) }
+
+    override fun isTenantPermitted(globalCustomerId: String?, serviceType: String?, tenantName: String?): Boolean =
+            roleValidators.any { it.isTenantPermitted(globalCustomerId, serviceType, tenantName) }
+
+}
diff --git a/vid-app-common/src/test/java/org/onap/vid/roles/RoleValidatorsComposerTest.java b/vid-app-common/src/test/java/org/onap/vid/roles/RoleValidatorsComposerTest.java
new file mode 100644
index 000000000..91ea953fb
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/roles/RoleValidatorsComposerTest.java
@@ -0,0 +1,110 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2017 - 2020 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.vid.roles;
+
+import static java.util.stream.Collectors.toList;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.withSettings;
+
+import com.google.common.collect.ImmutableSet;
+import java.util.function.Function;
+import java.util.stream.Stream;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+public class RoleValidatorsComposerTest {
+
+    private RoleValidator alwaysTrueRoles;
+    private RoleValidator alwaysFalseRoles;
+
+    @DataProvider
+    public static Object[][] allInterfaceFunctions() {
+        return Stream.<Function<RoleValidator, Boolean>>of(
+            (RoleValidator o) -> o.isSubscriberPermitted("subscriberId"),
+            (RoleValidator o) -> o.isServicePermitted(new PermissionProperties("subscriberId", "serviceType")),
+            (RoleValidator o) -> o.isTenantPermitted("subscriberId", "serviceType", "tenantName")
+        ).map(it -> new Object[]{it}).collect(toList()).toArray(new Object[][]{});
+    }
+
+    @BeforeMethod
+    public void setUp() {
+        alwaysTrueRoles = mock(RoleValidator.class, withSettings().defaultAnswer(o -> true));
+        alwaysFalseRoles = mock(RoleValidator.class);
+    }
+
+    @Test(dataProvider = "allInterfaceFunctions")
+    public void emptyComposite_returnsFalse(Function<RoleValidator, Boolean> interfaceFunction) {
+        RoleValidatorsComposer underTest = new RoleValidatorsComposer();
+
+        assertThat(
+            interfaceFunction.apply(underTest),
+            is(false)
+        );
+
+    }
+
+    @Test(dataProvider = "allInterfaceFunctions")
+    public void falseAndTrueComposite_returnsTrue(Function<RoleValidator, Boolean> interfaceFunction) {
+        RoleValidatorsComposer underTest =
+            new RoleValidatorsComposer(alwaysFalseRoles, alwaysFalseRoles, alwaysTrueRoles);
+
+        assertThat(
+            interfaceFunction.apply(underTest),
+            is(true)
+        );
+    }
+
+    @Test(dataProvider = "allInterfaceFunctions")
+    public void trueAndFalseComposite_returnsTrueAndShortCircuits(Function<RoleValidator, Boolean> interfaceFunction) {
+        RoleValidatorsComposer underTest = new RoleValidatorsComposer(alwaysTrueRoles, alwaysFalseRoles);
+
+        assertThat(
+            interfaceFunction.apply(underTest),
+            is(true)
+        );
+
+        verifyZeroInteractions(alwaysFalseRoles);
+    }
+
+    @Test(dataProvider = "allInterfaceFunctions")
+    public void falseAndFalseComposite_returnsFalse(Function<RoleValidator, Boolean> interfaceFunction) {
+        RoleValidatorsComposer underTest = new RoleValidatorsComposer(alwaysFalseRoles, alwaysFalseRoles);
+        
+        assertThat(
+            interfaceFunction.apply(underTest),
+            is(false)
+        );
+    }
+
+    @Test
+    public void secondaryConstructor_givenSetIfValidators_returnsTrue() {
+        RoleValidatorsComposer underTest = new RoleValidatorsComposer(
+            ImmutableSet.of(alwaysTrueRoles)
+        );
+
+        assertThat(underTest.isSubscriberPermitted("anything"), is(true));
+    }
+
+}