Add unit test for untested CharMatcher.retainFrom() method.

Fixes #6500 Fixes #6069 RELNOTES=n/a PiperOrigin-RevId: 532889411
google · May 17, 2023 · 3a8d7e4 · 3a8d7e4
1 parent b482864
commit 3a8d7e4
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/android/guava-tests/test/com/google/common/base/CharMatcherTest.java b/android/guava-tests/test/com/google/common/base/CharMatcherTest.java
@@ -652,6 +652,14 @@ public void testReplaceFrom() {
     assertEquals("12 &gt; 5", is('>').replaceFrom("12 > 5", "&gt;"));
   }
 
+  public void testRetainFrom() {
+    assertEquals("aaa", is('a').retainFrom("bazaar"));
+    assertEquals("z", is('z').retainFrom("bazaar"));
+    assertEquals("!", is('!').retainFrom("!@#$%^&*()-="));
+    assertEquals("", is('x').retainFrom("bazaar"));
+    assertEquals("", is('a').retainFrom(""));
+  }
+
   public void testPrecomputedOptimizations() {
     // These are testing behavior that's never promised by the API.
     // Some matchers are so efficient that it is a waste of effort to

diff --git a/guava-tests/test/com/google/common/base/CharMatcherTest.java b/guava-tests/test/com/google/common/base/CharMatcherTest.java
@@ -652,6 +652,14 @@ public void testReplaceFrom() {
     assertEquals("12 &gt; 5", is('>').replaceFrom("12 > 5", "&gt;"));
   }
 
+  public void testRetainFrom() {
+    assertEquals("aaa", is('a').retainFrom("bazaar"));
+    assertEquals("z", is('z').retainFrom("bazaar"));
+    assertEquals("!", is('!').retainFrom("!@#$%^&*()-="));
+    assertEquals("", is('x').retainFrom("bazaar"));
+    assertEquals("", is('a').retainFrom(""));
+  }
+
   public void testPrecomputedOptimizations() {
     // These are testing behavior that's never promised by the API.
     // Some matchers are so efficient that it is a waste of effort to