Implement TextUtils.getTrimmedLength

Change-Id: I792900386c63cee5124022d62d4c234ac8a8cf36

2 files changed, 26 insertions, 0 deletions

diff --git a/src/main/java/com/xtremelabs/robolectric/shadows/ShadowTextUtils.java b/src/main/java/com/xtremelabs/robolectric/shadows/ShadowTextUtils.java
index 077035139..abf5491fd 100644
--- a/src/main/java/com/xtremelabs/robolectric/shadows/ShadowTextUtils.java
+++ b/src/main/java/com/xtremelabs/robolectric/shadows/ShadowTextUtils.java
@@ -27,6 +27,23 @@ public class ShadowTextUtils {
     }
 
     @Implementation
+    public static int getTrimmedLength(CharSequence s) {
+        int len = s.length();
+
+        int start = 0;
+        while (start < len && s.charAt(start) <= ' ') {
+            start++;
+        }
+
+        int end = len;
+        while (end > start && s.charAt(end - 1) <= ' ') {
+            end--;
+        }
+
+        return end - start;
+    }
+
+    @Implementation
     public static String join(CharSequence delimiter, Iterable tokens) {
         return Join.join((String) delimiter, (Collection) tokens);
     }
diff --git a/src/test/java/com/xtremelabs/robolectric/shadows/TextUtilsTest.java b/src/test/java/com/xtremelabs/robolectric/shadows/TextUtilsTest.java
index ed5752714..bff513751 100644
--- a/src/test/java/com/xtremelabs/robolectric/shadows/TextUtilsTest.java
+++ b/src/test/java/com/xtremelabs/robolectric/shadows/TextUtilsTest.java
@@ -38,6 +38,15 @@ public class TextUtilsTest {
         assertThat(TextUtils.isDigitsOnly("123456"), equalTo(true));
         assertThat(TextUtils.isDigitsOnly("124a56"), equalTo(false));
     }
+
+    @Test
+    public void testGetTrimmedLength() {
+        assertThat(TextUtils.getTrimmedLength("123456"), equalTo(6));
+        assertThat(TextUtils.getTrimmedLength(" \n \t 123456"), equalTo(6));
+        assertThat(TextUtils.getTrimmedLength("123456  \n \t "), equalTo(6));
+        assertThat(TextUtils.getTrimmedLength(" \n \t  123456  \n \t "), equalTo(6));
+        assertThat(TextUtils.getTrimmedLength(" \n \t  \n \t "), equalTo(0));
+    }
     
     @Test
     public void testSplit() {