Merge "Add unit tests for some text-message functions" into studio-1.…

…4-dev

Makefile.tests

@@ -58,6 +58,8 @@ EMULATOR_UNITTESTS_SOURCES := \
   android/wear-agent/PairUpWearPhone_unittest.cpp \
   android/wear-agent/testing/WearAgentTestUtils.cpp \
   android/wear-agent/WearAgent_unittest.cpp \
+  telephony/gsm_unittest.cpp \
+  telephony/gsm.c \
 
 ifeq (windows,$(HOST_OS))
 EMULATOR_UNITTESTS_SOURCES += \

telephony/gsm.h

@@ -19,6 +19,10 @@ typedef unsigned char  byte_t;
 typedef byte_t*        bytes_t;
 typedef const byte_t*  cbytes_t;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /** BCD
  **/
 
@@ -198,4 +202,8 @@ extern void*     gsm_rope_reserve( GsmRope  rope, int  len );
 
 #define  PHONE_PREFIX "1555521"
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif /* _android_gsm_h */

telephony/gsm_unittest.cpp

@@ -0,0 +1,80 @@
+// Copyright 2015 The Android Open Source Project
+//
+// This software is licensed under the terms of the GNU General Public
+// License version 2, as published by the Free Software Foundation, and
+// may be copied, distributed, and modified under those terms.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+#include <gtest/gtest.h>
+#include "telephony/gsm.h"
+
+namespace gsm {
+
+TEST(Gsm, Utf8CheckGsm7) {
+    char utf8In[] = "01234567890123456789012345678901234567890123456789"  // [  0] .. [ 49]
+                    "0123456789012345678901234***8901234567890123456789"  // [ 50] .. [ 99]
+                    "01234567890123456789012345678901234567890123456789"  // [100] .. [149]
+                    "01234567890123456789012345678901234567890123456789"; // [150] .. [199]
+
+    utf8In[75] = 0xE2; // Insert a UTF-8 'Euro currency' symbol
+    utf8In[76] = 0x82;
+    utf8In[77] = 0xAC;
+
+    // The Euro symbol is a three-byte UTF-8 symbol and a
+    // two-byte GSM-7 symbol.
+
+    cbytes_t start = (cbytes_t)&utf8In[0];
+
+    int isGsm7 = utf8_check_gsm7(start, strlen(utf8In));
+    EXPECT_TRUE(isGsm7);
+
+    cbytes_t end     = (cbytes_t)(start + strlen(utf8In));
+    int      gsm7len = 154;
+
+    // The "Euro" generates 2 output GSM-7 bytes from 3 input
+    // bytes.
+    // The other ("regular") input bytes give 1 GSM-7 byte
+    // each, so 152 input bytes are be needed to generate 152
+    // output bytes.
+    // In total, this test case needs 155 input bytes to
+    // generate 154 output bytes.
+    cbytes_t result = utf8_skip_gsm7(start, end, gsm7len);
+    EXPECT_EQ((result - start), 155);
+}
+
+TEST(Gsm, Utf8CheckUcs2) {
+    char utf8In[] = "01234567890123456789012345678901234567890123456789"  // [  0] .. [ 49]
+                    "0**34567890123456789012345678901234567890123456789"  // [ 50] .. [ 99]
+                    "01234567890123456789012345678901234567890123456789"  // [100] .. [149]
+                    "01234567890123456789012345678901234567890123456789"; // [150] .. [199]
+
+    utf8In[51] = 0xC2; // Insert a UTF-8 'cent' symbol
+    utf8In[52] = 0xA2;
+
+    // The cent symbol is not in GSM-7. Its presence forces
+    // the SMS message to use UCS-2.
+
+    cbytes_t start   = (cbytes_t)&utf8In[0];
+
+    int isGsm7 = utf8_check_gsm7(start, strlen(utf8In));
+    EXPECT_FALSE(isGsm7);
+
+    cbytes_t end     = (cbytes_t)(start + strlen(utf8In));
+    int      ucs2len = 124;
+
+    // The "cent" generates 2 output UCS-2 bytes from 2 input
+    // bytes.
+    // The other ("regular") input bytes give 2 UCS-2 bytes
+    // each, so 61 input bytes are be needed to generate 122
+    // output bytes.
+    // In total, this test case needs 63 input bytes to
+    // generate 124 output bytes.
+    cbytes_t result = utf8_skip_ucs2(start, end, ucs2len);
+    EXPECT_EQ((result - start), 63);
+}
+
+}  // namespace gsm