1 files changed, 30 insertions, 0 deletions
diff --git a/adb/sysdeps_win32_test.cpp b/adb/sysdeps_win32_test.cpp
index 529b21215a..c3a3fd7c17 100755
--- a/adb/sysdeps_win32_test.cpp
+++ b/adb/sysdeps_win32_test.cpp
@@ -70,6 +70,36 @@ TEST(sysdeps_win32, adb_getenv) {
     }
 }
 
+void TestAdbStrError(int err, const char* expected) {
+    errno = 12345;
+    const char* result = adb_strerror(err);
+    // Check that errno is not overwritten.
+    EXPECT_EQ(12345, errno);
+    EXPECT_STREQ(expected, result);
+}
+
+TEST(sysdeps_win32, adb_strerror) {
+    // Test an error code that should not have a mapped string. Use an error
+    // code that is not used by the internal implementation of adb_strerror().
+    TestAdbStrError(-2, "Unknown error");
+    // adb_strerror() uses -1 internally, so test that it can still be passed
+    // as a parameter.
+    TestAdbStrError(-1, "Unknown error");
+    // Test very big, positive unknown error.
+    TestAdbStrError(1000000, "Unknown error");
+
+    // Test success case.
+    // Wine returns "Success" for strerror(0), Windows returns "No error", so accept both.
+    std::string success = adb_strerror(0);
+    EXPECT_TRUE(success == "Success" || success == "No error") << "strerror(0) = " << success;
+
+    // Test error that regular strerror() should have a string for.
+    TestAdbStrError(EPERM, "Operation not permitted");
+    // Test error that regular strerror() doesn't have a string for, but that
+    // adb_strerror() returns.
+    TestAdbStrError(ECONNRESET, "Connection reset by peer");
+}
+
 TEST(sysdeps_win32, unix_isatty) {
     // stdin and stdout should be consoles. Use CONIN$ and CONOUT$ special files
     // so that we can test this even if stdin/stdout have been redirected. Read