add issue severity enum

src/main/java/com/jfrog/xray/client/services/summary/IssueSeverity.java

@@ -0,0 +1,33 @@
+package com.jfrog.xray.client.services.summary;
+
+/**
+ * @author gonggy
+ * @date 2022/6/13
+ */
+public enum IssueSeverity {
+
+    CRITICAL("Critical"),
+    HIGH("High"),
+    MEDIUM("Medium"),
+    LOW("Low"),
+    UNKNOWN("Unknown");
+
+    private String severity;
+
+    private IssueSeverity(String severity) {
+        this.severity = severity;
+    }
+
+    public String severity() {
+        return severity;
+    }
+
+    public static IssueSeverity of(String severity) {
+        for (IssueSeverity is : values()) {
+            if (is.severity.equalsIgnoreCase(severity)) {
+                return is;
+            }
+        }
+        return UNKNOWN;
+    }
+}

src/test/java/com/jfrog/xray/client/services/summary/IssueSeverityTest.java

@@ -0,0 +1,26 @@
+package com.jfrog.xray.client.services.summary;
+
+import static org.testng.Assert.*;
+
+import org.testng.annotations.Test;
+
+/**
+ * @author gonggy
+ * @date 2022/6/13
+ */
+public class IssueSeverityTest {
+
+    @Test
+    public void testOf() {
+        assertEquals(IssueSeverity.CRITICAL, IssueSeverity.of("critical"));
+        assertEquals(IssueSeverity.CRITICAL, IssueSeverity.of("Critical"));
+        assertEquals(IssueSeverity.CRITICAL, IssueSeverity.of("CRITICAL"));
+
+        assertEquals(IssueSeverity.HIGH, IssueSeverity.of("high"));
+        assertEquals(IssueSeverity.MEDIUM, IssueSeverity.of("medium"));
+        assertEquals(IssueSeverity.LOW, IssueSeverity.of("low"));
+        assertEquals(IssueSeverity.UNKNOWN, IssueSeverity.of("unknown"));
+        assertEquals(IssueSeverity.UNKNOWN, IssueSeverity.of("other"));
+        assertEquals(IssueSeverity.UNKNOWN, IssueSeverity.of(null));
+    }
+}