Resolved#71

src/main/java/strman/Strman.java

@@ -1164,6 +1164,37 @@ public abstract class Strman {
         return head(input).toLowerCase() + tail(input);
     }
 
+    /**
+     * Verifies whether String is enclosed by encloser
+     *
+     * @param input    The input String
+     * @param encloser String which encloses input String
+     * @return true if enclosed false otherwise
+     */
+    public static boolean isEnclosedBetween(final String input, final String encloser) {
+        return isEnclosedBetween(input, encloser, encloser);
+    }
+
+    /**
+     * Verifies whether String is enclosed by encloser
+     *
+     * @param input        The input String
+     * @param leftEncloser String which encloses input String
+     * @return true if enclosed false otherwise
+     */
+    public static boolean isEnclosedBetween(final String input, final String leftEncloser, String rightEncloser) {
+        if (input == null) {
+            throw new IllegalArgumentException("input can't be null");
+        }
+        if (leftEncloser == null) {
+            throw new IllegalArgumentException("leftEncloser can't be null");
+        }
+        if (rightEncloser == null) {
+            throw new IllegalArgumentException("rightEncloser can't be null");
+        }
+        return input.startsWith(leftEncloser) && input.endsWith(rightEncloser);
+    }
+
     private static void validate(String value, Predicate<String> predicate, final Supplier<String> supplier) {
         if (predicate.test(value)) {
             throw new IllegalArgumentException(supplier.get());

src/test/java/strman/StrmanTest.java

@@ -925,8 +925,21 @@ public class StrmanTest {
 
     @Test
     public void lowerFirst_shouldLowercasedFirstCharacterOfString() throws Exception {
-        assertThat(lowerFirst("FRED"),is(equalTo("fRED")));
+        assertThat(lowerFirst("FRED"), is(equalTo("fRED")));
-        assertThat(lowerFirst("fred"),is(equalTo("fred")));
+        assertThat(lowerFirst("fred"), is(equalTo("fred")));
-        assertThat(lowerFirst("Fred"),is(equalTo("fred")));
+        assertThat(lowerFirst("Fred"), is(equalTo("fred")));
+    }
+
+    @Test
+    public void isEnclosedBetween_shouldChekcWhetherStringIsEnclosed() throws Exception {
+        assertThat(isEnclosedBetween("{{shekhar}}", "{{", "}}"), is(true));
+        assertThat(isEnclosedBetween("shekhar", "{{", "}}"), is(false));
+        assertThat(isEnclosedBetween("*shekhar*", "*"), is(true));
+        assertThat(isEnclosedBetween("shekhar", "*"), is(false));
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void isEnclosedBetween_shouldThrowIllegalArgumentExceptionWhenEncloserIsNull() throws Exception {
+        assertThat(isEnclosedBetween("shekhar", null), is(false));
     }
 }