CEC: Add VTS test to set language

Test: atest VtsHalTvCecV1_0TargetTest
Bug: 172316717
Change-Id: I231485b00f39a2acfc2ea43f00fa65bdde286bf6
diff --git a/tv/cec/1.0/vts/functional/VtsHalTvCecV1_0TargetTest.cpp b/tv/cec/1.0/vts/functional/VtsHalTvCecV1_0TargetTest.cpp
index 95f4d67..167f4c4 100644
--- a/tv/cec/1.0/vts/functional/VtsHalTvCecV1_0TargetTest.cpp
+++ b/tv/cec/1.0/vts/functional/VtsHalTvCecV1_0TargetTest.cpp
@@ -112,3 +112,8 @@
     ret = hdmiCec->setOption(OptionKey::SYSTEM_CEC_CONTROL, false);
     EXPECT_TRUE(ret.isOk());
 }
+
+TEST_P(HdmiCecTest, SetLanguage) {
+    Return<void> ret = hdmiCec->setLanguage("eng");
+    EXPECT_TRUE(ret.isOk());
+}