Skip enableModem vts if in single SIM mode.

Due to modem issue, enableModem only works in dual-SIM mode.
And we only use that in dual-SIM mode. So skipping testing in
in single SIM mode.

Bug: 152557383
Test: vts
Change-Id: I41f200317eaf9be0613f92e5bff9a3ee8a98ef15
Merged-In: I41f200317eaf9be0613f92e5bff9a3ee8a98ef15

radio/1.3/vts/functional/radio_hidl_hal_api.cpp

@@ -16,6 +16,7 @@
 
 #include <radio_hidl_hal_utils_v1_3.h>
 #include <vector>
+#include "VtsCoreUtil.h"
 
 #define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
 
@@ -25,6 +26,15 @@
 TEST_P(RadioHidlTest_v1_3, enableModem) {
     serial = GetRandomSerialNumber();
 
+    bool isMultiSimEnabled =
+            testing::checkSubstringInCommandOutput("getprop persist.radio.multisim.config",
+                                                   "dsds") ||
+            testing::checkSubstringInCommandOutput("getprop persist.radio.multisim.config", "tsts");
+    if (!isMultiSimEnabled) {
+        ALOGI("enableModem, no need to test in single SIM mode");
+        return;
+    }
+
     bool responseToggle = radioRsp_v1_3->enableModemResponseToggle;
     Return<void> res = radio_v1_3->enableModem(serial, true);
     ASSERT_OK(res);