1 files changed, 53 insertions, 0 deletions
diff --git a/tests/src/org/kelar/inputmethod/keyboard/internal/SmoothingUtilsTests.java b/tests/src/org/kelar/inputmethod/keyboard/internal/SmoothingUtilsTests.java
new file mode 100644
index 000000000..4de2dda81
--- /dev/null
+++ b/tests/src/org/kelar/inputmethod/keyboard/internal/SmoothingUtilsTests.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+package org.kelar.inputmethod.keyboard.internal;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.kelar.inputmethod.keyboard.internal.MatrixUtils.MatrixOperationFailedException;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class SmoothingUtilsTests {
+    // "run tests" -c org.kelar.inputmethod.keyboard.internal.SmoothingUtilsTests
+    private static final boolean DEBUG = false;
+
+    @Test
+    public void testGet3DParamaters() {
+        final float[] xs = new float[] {0, 1, 2, 3, 4};
+        final float[] ys = new float[] {1, 4, 15, 40, 85}; // y = x^3 + x^2 + x + 1
+        final float[][] retval = new float[4][1];
+        try {
+            SmoothingUtils.get3DParameters(xs, ys, retval);
+            if (DEBUG) {
+                MatrixUtils.dump("3d", retval);
+            }
+            for (int i = 0; i < 4; ++i) {
+                assertEquals(retval[i][0], 1.0f, 0.001f);
+            }
+        } catch (MatrixOperationFailedException e) {
+            assertTrue(false);
+        }
+    }
+}