UatExecutor does not support complex test scenarios

Issue-ID: CCSDK-3793
Signed-off-by: Frank Kimmlingen <frank.kimmlingen@telekom.de>
Change-Id: I6bb03a8e03a37aa9e87d381075bc5de8cadcc7f2

3 files changed, 107 insertions, 4 deletions

diff --git a/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcher.kt b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcher.kt
new file mode 100644
index 000000000..995b19c41
--- /dev/null
+++ b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcher.kt
@@ -0,0 +1,26 @@
+package org.onap.ccsdk.cds.blueprintsprocessor.uat.utils
+
+import org.mockito.ArgumentMatcher
+import org.skyscreamer.jsonassert.JSONAssert
+import org.skyscreamer.jsonassert.JSONCompareMode
+
+class JsonMatcher(val expectedJson: String?) : ArgumentMatcher<String> {
+
+    override fun matches(actualJson: String?): Boolean {
+        if (expectedJson == null) {
+            return actualJson == null
+        } else if (actualJson.isNullOrEmpty() && (expectedJson.isEmpty() || expectedJson.equals("null"))) {
+            // null, "" and "null" means the same here
+            return true
+        } else if (!actualJson.isNullOrEmpty() && expectedJson.isNotEmpty()) {
+            return try {
+                JSONAssert.assertEquals("", expectedJson, actualJson, JSONCompareMode.LENIENT)
+                true
+            } catch (e: AssertionError) {
+                false
+            }
+        } else {
+            return false
+        }
+    }
+}
diff --git a/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/UatExecutor.kt b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/UatExecutor.kt
index b97dbf7bb..45677fac1 100644
--- a/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/UatExecutor.kt
+++ b/ms/blueprintsprocessor/application/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/UatExecutor.kt
@@ -154,7 +154,7 @@ open class UatExecutor(
                     verify(mockClient, evalVerificationMode(expectation.times)).exchangeResource(
                         eq(request.method),
                         eq(request.path),
-                        argThat { assertJsonEquals(request.body, this) },
+                        any(),
                         argThat(RequiredMapEntriesMatcher(request.headers))
                     )
                 }
@@ -202,7 +202,7 @@ open class UatExecutor(
                     restClient.exchangeResource(
                         eq(expectation.request.method),
                         eq(expectation.request.path),
-                        any(),
+                        argThat(JsonMatcher(expectation.request.body.toString())),
                         any()
                     )
                 )
@@ -324,8 +324,11 @@ open class UatExecutor(
 
         override fun getInstance(selector: String, service: BlueprintWebClientService): BlueprintWebClientService {
             var spiedService = spies[selector]
-            if (spiedService != null)
+            if (spiedService != null) {
+                // inject the service here as realService: needed for "stateful services" (e.g. holding a session token)
+                spiedService.realService = service
                 return spiedService
+            }
 
             spiedService = SpyService(mapper, selector, service)
             spies[selector] = spiedService
@@ -339,7 +342,7 @@ open class UatExecutor(
     open class SpyService(
         private val mapper: ObjectMapper,
         val selector: String,
-        private val realService: BlueprintWebClientService
+        var realService: BlueprintWebClientService
     ) :
         BlueprintWebClientService by realService {
 
diff --git a/ms/blueprintsprocessor/application/src/test/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcherTest.kt b/ms/blueprintsprocessor/application/src/test/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcherTest.kt
new file mode 100644
index 000000000..9179176f9
--- /dev/null
+++ b/ms/blueprintsprocessor/application/src/test/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/uat/utils/JsonMatcherTest.kt
@@ -0,0 +1,74 @@
+package org.onap.ccsdk.cds.blueprintsprocessor.uat.utils
+
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class JsonMatcherTest {
+    @Test
+    fun `matches easy case`() {
+        val expected = """
+         {
+            "a": "b"
+         }   
+        """.trimIndent()
+        val actual = """
+         {
+            "a": "b"
+         }   
+        """.trimIndent()
+        assertTrue(JsonMatcher(expected).matches(actual))
+    }
+
+    @Test
+    fun `matches fails easy case`() {
+        val expected = """
+         {
+            "a": "b"
+         }   
+        """.trimIndent()
+        val actual = """
+         {
+            "a": "c"
+         }   
+        """.trimIndent()
+        assertFalse(JsonMatcher(expected).matches(actual))
+    }
+
+    @Test
+    fun `matches easy case (actual is lenient aka Extensible)`() {
+        val expected = """
+         {
+            "a": "b"
+         }   
+        """.trimIndent()
+        val actual = """
+         {
+            "a": "b",
+            "c": "d"
+         }   
+        """.trimIndent()
+        assertTrue(JsonMatcher(expected).matches(actual))
+
+        assertFalse(JsonMatcher(actual).matches(expected))
+    }
+
+    @Test
+    fun `matches null`() {
+        assertTrue(JsonMatcher(null).matches(null))
+    }
+
+    @Test
+    fun `matches null and "null"`() {
+        val expected: String? = null
+        val actual: String? = null
+        assertTrue(JsonMatcher("null").matches(null))
+    }
+
+    @Test
+    fun `matches ""`() {
+        val expected: String? = null
+        val actual: String? = null
+        assertTrue(JsonMatcher("").matches(""))
+    }
+}