Moved variable name extraction to separate class.

Change-Id: Ic4105f9f3557c924928321c1b27f7b0e3444bfbc
Issue-ID: SO-374
Signed-off-by: biniek <lukasz.biniek@nokia.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/bpmn/MSOCoreBPMN/src/test/java/org/openecomp/mso/bpmn/core/internal/VariableNameExtractorTest.java b/bpmn/MSOCoreBPMN/src/test/java/org/openecomp/mso/bpmn/core/internal/VariableNameExtractorTest.java
new file mode 100644
index 0000000000..57f479f7cb
--- /dev/null
+++ b/bpmn/MSOCoreBPMN/src/test/java/org/openecomp/mso/bpmn/core/internal/VariableNameExtractorTest.java
@@ -0,0 +1,86 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2017 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.openecomp.mso.bpmn.core.internal;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Optional;
+import org.junit.Test;
+
+public class VariableNameExtractorTest {
+
+    @Test
+    public void shouldExtractVariableName() throws Exception {
+        // given
+        String name = "A_different_NAME123";
+        String variable = "${A_different_NAME123}";
+        VariableNameExtractor extractor = new VariableNameExtractor(variable);
+        // when
+        Optional<String> extracted = extractor.extract();
+        // then
+        assertThat(extracted).isPresent().contains(name);
+    }
+
+    @Test
+    public void shouldExtractVariableNameFromWhitespaces() throws Exception {
+        // given
+        String name = "name";
+        String variable = " \n\t$ \n\t{ \n\tname \n\t} \n\t";
+        VariableNameExtractor extractor = new VariableNameExtractor(variable);
+        // when
+        Optional<String> extracted = extractor.extract();
+        // then
+        assertThat(extracted).isPresent().contains(name);
+    }
+
+    @Test
+    public void shouldReturnEmptyIfThereIsMoreThanVariable() throws Exception {
+        // given
+        String variable = "a ${test}";
+        VariableNameExtractor extractor = new VariableNameExtractor(variable);
+        // when
+        Optional<String> extracted = extractor.extract();
+        // then
+        assertThat(extracted).isNotPresent();
+    }
+
+    @Test
+    public void shouldReturnEmptyIfVariableNameIsIncorrect() throws Exception {
+        // given
+        String variable = "${name with space}";
+        VariableNameExtractor extractor = new VariableNameExtractor(variable);
+        // when
+        Optional<String> extracted = extractor.extract();
+        // then
+        assertThat(extracted).isNotPresent();
+    }
+
+    @Test
+    public void shouldReturnEmptyIfTwoVariablesPresent() throws Exception {
+        // given
+        String variable = "${var1} ${var2}";
+        VariableNameExtractor extractor = new VariableNameExtractor(variable);
+        // when
+        Optional<String> extracted = extractor.extract();
+        // then
+        assertThat(extracted).isNotPresent();
+    }
+}
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