diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 0c13db3..5145e11 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -66,6 +66,7 @@
         "BackgroundExecutorTest.cpp",
         "CommitTest.cpp",
         "CompositionTest.cpp",
+        "DaltonizerTest.cpp",
         "DisplayIdGeneratorTest.cpp",
         "DisplayTransactionTest.cpp",
         "DisplayDevice_GetBestColorModeTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/DaltonizerTest.cpp b/services/surfaceflinger/tests/unittests/DaltonizerTest.cpp
new file mode 100644
index 0000000..9f632a1
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/DaltonizerTest.cpp
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+#include <math/mat4.h>
+#include <cmath>
+#include "Effects/Daltonizer.h"
+
+namespace android {
+
+class DaltonizerTest {
+private:
+    Daltonizer& mDaltonizer;
+
+public:
+    DaltonizerTest(Daltonizer& daltonizer) : mDaltonizer(daltonizer) {}
+
+    bool isDirty() const { return mDaltonizer.mDirty; }
+
+    float getLevel() const { return mDaltonizer.mLevel; }
+
+    ColorBlindnessType getType() const { return mDaltonizer.mType; }
+};
+
+constexpr float TOLERANCE = 0.01f;
+
+static bool isIdentityMatrix(mat4& matrix) {
+    for (size_t i = 0; i < 4; ++i) {
+        for (size_t j = 0; j < 4; ++j) {
+            if (i == j) {
+                // Check diagonal elements
+                if (std::fabs(matrix[i][j] - 1.0f) > TOLERANCE) {
+                    return false;
+                }
+            } else {
+                // Check off-diagonal elements
+                if (std::fabs(matrix[i][j]) > TOLERANCE) {
+                    return false;
+                }
+            }
+        }
+    }
+    return true;
+}
+
+// Test Suite Name : DaltonizerTest, Test name: ConstructionDefaultValues
+TEST(DaltonizerTest, ConstructionDefaultValues) {
+    Daltonizer daltonizer;
+    DaltonizerTest test(daltonizer);
+
+    EXPECT_EQ(test.getLevel(), 0.7f);
+    ASSERT_TRUE(test.isDirty());
+    EXPECT_EQ(test.getType(), ColorBlindnessType::None);
+    mat4 matrix = daltonizer();
+    ASSERT_TRUE(isIdentityMatrix(matrix));
+}
+
+TEST(DaltonizerTest, NotDirtyAfterColorMatrixReturned) {
+    Daltonizer daltonizer;
+
+    mat4 matrix = daltonizer();
+    DaltonizerTest test(daltonizer);
+
+    ASSERT_FALSE(test.isDirty());
+    ASSERT_TRUE(isIdentityMatrix(matrix));
+}
+
+TEST(DaltonizerTest, LevelOutOfRangeTooLowIgnored) {
+    Daltonizer daltonizer;
+    // Get matrix to reset isDirty == false.
+    mat4 matrix = daltonizer();
+
+    daltonizer.setLevel(-1);
+    DaltonizerTest test(daltonizer);
+
+    EXPECT_EQ(test.getLevel(), 0.7f);
+    ASSERT_FALSE(test.isDirty());
+}
+
+TEST(DaltonizerTest, LevelOutOfRangeTooHighIgnored) {
+    Daltonizer daltonizer;
+    // Get matrix to reset isDirty == false.
+    mat4 matrix = daltonizer();
+
+    daltonizer.setLevel(11);
+    DaltonizerTest test(daltonizer);
+
+    EXPECT_EQ(test.getLevel(), 0.7f);
+    ASSERT_FALSE(test.isDirty());
+}
+
+TEST(DaltonizerTest, ColorCorrectionMatrixNonIdentical) {
+    Daltonizer daltonizer;
+    daltonizer.setType(ColorBlindnessType::Protanomaly);
+    daltonizer.setMode(ColorBlindnessMode::Correction);
+
+    mat4 matrix = daltonizer();
+
+    ASSERT_FALSE(isIdentityMatrix(matrix));
+}
+
+TEST(DaltonizerTest, LevelZeroColorMatrixEqIdentityMatrix) {
+    Daltonizer daltonizer;
+    daltonizer.setType(ColorBlindnessType::Protanomaly);
+    daltonizer.setMode(ColorBlindnessMode::Correction);
+    daltonizer.setLevel(0);
+
+    mat4 matrix = daltonizer();
+
+    ASSERT_TRUE(isIdentityMatrix(matrix));
+}
+
+} /* namespace android */