diff --git a/test/test_string_u16_external_buffer.cpp b/test/test_string_u16_external_buffer.cpp
index 2cff9cb3e..8e271ad6b 100644
--- a/test/test_string_u16_external_buffer.cpp
+++ b/test/test_string_u16_external_buffer.cpp
@@ -460,61 +460,6 @@ namespace
 #endif
     }
 
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_move_the_string)
-    {
-      TextBuffer buffer1{ 0 };
-      Text text(initial_text.c_str(), buffer1.data(), buffer1.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      TextBuffer buffer2{ 0 };
-      Text text2(etl::move(text), buffer2.data(), buffer2.size());
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_FALSE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(original_max_size, text.max_size());
-      CHECK_TRUE(text.data() != nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_steal_the_string)
-    {
-      TextBuffer buffer{ 0 };
-      Text text(initial_text.c_str(), buffer.data(), buffer.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      Text text2(etl::move(text));
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_TRUE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(0U, text.max_size());
-      CHECK_TRUE(text.data() == nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
     //*************************************************************************
     TEST_FIXTURE(SetupFixture, test_construct_position_length)
     {
diff --git a/test/test_string_u32_external_buffer.cpp b/test/test_string_u32_external_buffer.cpp
index e372fce17..966500158 100644
--- a/test/test_string_u32_external_buffer.cpp
+++ b/test/test_string_u32_external_buffer.cpp
@@ -460,61 +460,6 @@ namespace
 #endif
     }
 
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_move_the_string)
-    {
-      TextBuffer buffer1{ 0 };
-      Text text(initial_text.c_str(), buffer1.data(), buffer1.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      TextBuffer buffer2{ 0 };
-      Text text2(etl::move(text), buffer2.data(), buffer2.size());
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_FALSE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(original_max_size, text.max_size());
-      CHECK_TRUE(text.data() != nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_steal_the_string)
-    {
-      TextBuffer buffer{ 0 };
-      Text text(initial_text.c_str(), buffer.data(), buffer.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      Text text2(etl::move(text));
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_TRUE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(0U, text.max_size());
-      CHECK_TRUE(text.data() == nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
     //*************************************************************************
     TEST_FIXTURE(SetupFixture, test_construct_position_length)
     {
diff --git a/test/test_string_u8_external_buffer.cpp b/test/test_string_u8_external_buffer.cpp
index ca5e9bd51..bc2caaaf4 100644
--- a/test/test_string_u8_external_buffer.cpp
+++ b/test/test_string_u8_external_buffer.cpp
@@ -463,61 +463,6 @@ namespace
 #endif
     }
 
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_move_the_string)
-    {
-      TextBuffer buffer1{ 0 };
-      Text text(initial_text.c_str(), buffer1.data(), buffer1.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      TextBuffer buffer2{ 0 };
-      Text text2(etl::move(text), buffer2.data(), buffer2.size());
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_FALSE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(original_max_size, text.max_size());
-      CHECK_TRUE(text.data() != nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
-    //*************************************************************************
-    TEST_FIXTURE(SetupFixture, test_move_constructor_steal_the_string)
-    {
-      TextBuffer buffer{ 0 };
-      Text text(initial_text.c_str(), buffer.data(), buffer.size());
-
-      size_t original_size = text.size();
-      size_t original_max_size = text.max_size();
-
-      Text text2(etl::move(text));
-
-      // Check the source string.
-      CHECK_TRUE(text.empty());
-      CHECK_TRUE(text.full());
-      CHECK_EQUAL(0U, text.size());
-      CHECK_EQUAL(0U, text.max_size());
-      CHECK_TRUE(text.data() == nullptr);
-
-      // Check the destination string.
-      CHECK_FALSE(text2.empty());
-      CHECK_TRUE(text2.full());
-      CHECK_EQUAL(original_size, text2.size());
-      CHECK_EQUAL(original_max_size, text2.max_size());
-      CHECK_TRUE(text2.data() != nullptr);
-      CHECK_TRUE(std::equal(initial_text.begin(), initial_text.end(), text2.begin()));
-    }
-
     //*************************************************************************
     TEST_FIXTURE(SetupFixture, test_construct_position_length)
     {