diff --git a/tests/src/com/android/inputmethod/keyboard/layout/expected/AbstractKeyboardBuilder.java b/tests/src/com/android/inputmethod/keyboard/layout/expected/AbstractKeyboardBuilder.java
new file mode 100644
index 000000000..45449b762
--- /dev/null
+++ b/tests/src/com/android/inputmethod/keyboard/layout/expected/AbstractKeyboardBuilder.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2014 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 com.android.inputmethod.keyboard.layout.expected;
+
+import java.util.Arrays;
+
+/**
+ * This class builds a keyboard that is a two dimensional array of elements E.
+ *
+ * A keyboard consists of array of rows, and a row consists of array of elements. Each row may have
+ * different number of elements. A element of a keyboard can be specified by a row number and a
+ * column number, both numbers starts from 1.
+ *
+ * @param the type of a keyboard element. A keyboard element must be an immutable object.
+ */
+abstract class AbstractKeyboardBuilder {
+ // A building array of rows.
+ private final E[][] mRows;
+
+ // Returns an instance of default element.
+ abstract E defaultElement();
+ // Returns an E array instance of the size.
+ abstract E[] newArray(final int size);
+ // Returns an E[] array instance of the size.
+ abstract E[][] newArrayOfArray(final int size);
+
+ /**
+ * Construct a builder filled with the default element.
+ * @param dimensions the integer array of each row's size.
+ */
+ AbstractKeyboardBuilder(final int ... dimensions) {
+ mRows = newArrayOfArray(dimensions.length);
+ for (int rowIndex = 0; rowIndex < dimensions.length; rowIndex++) {
+ mRows[rowIndex] = newArray(dimensions[rowIndex]);
+ Arrays.fill(mRows[rowIndex], defaultElement());
+ }
+ }
+
+ /**
+ * Construct a builder from template keyboard. This builder has the same dimensions and
+ * elements of rows.
+ * @param rows the template keyboard rows. The elements of the rows will be
+ * shared with this builder. Therefore a element must be an immutable object.
+ */
+ AbstractKeyboardBuilder(final E[][] rows) {
+ mRows = newArrayOfArray(rows.length);
+ for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
+ final E[] row = rows[rowIndex];
+ mRows[rowIndex] = Arrays.copyOf(row, row.length);
+ }
+ }
+
+ /**
+ * Return current constructing keyboard.
+ * @return the array of the array of the element being constructed.
+ */
+ E[][] build() {
+ return mRows;
+ }
+
+ /**
+ * Get the current contents of the specified row.
+ * @param row the row number to get the contents.
+ * @return the array of elements at row number row.
+ * @throws {@link RuntimeException} if row is illegal.
+ */
+ E[] getRowAt(final int row) {
+ final int rowIndex = row - 1;
+ if (rowIndex < 0 || rowIndex >= mRows.length) {
+ throw new RuntimeException("Illegal row number: " + row);
+ }
+ return mRows[rowIndex];
+ }
+
+ /**
+ * Set an array of elements to the specified row.
+ * @param row the row number to set elements.
+ * @param elements the array of elements to set at row number row.
+ * @throws {@link RuntimeException} if row is illegal.
+ */
+ void setRowAt(final int row, final E[] elements) {
+ final int rowIndex = row - 1;
+ if (rowIndex < 0 || rowIndex >= mRows.length) {
+ throw new RuntimeException("Illegal row number: " + row);
+ }
+ mRows[rowIndex] = elements;
+ }
+
+ /**
+ * Set or insert an element at specified position.
+ * @param row the row number to set or insert the element.
+ * @param column the column number to set or insert the element.
+ * @param element the element to set or insert at row,column.
+ * @param insert if true, the element is inserted at row,column.
+ * Otherwise the element replace the element at row,column.
+ * @throws {@link RuntimeException} if row or column is illegal.
+ */
+ void setElementAt(final int row, final int column, final E element, final boolean insert) {
+ final E[] elements = getRowAt(row);
+ final int columnIndex = column - 1;
+ if (insert) {
+ if (columnIndex < 0 || columnIndex >= elements.length + 1) {
+ throw new RuntimeException("Illegal column number: " + column);
+ }
+ final E[] newElements = Arrays.copyOf(elements, elements.length + 1);
+ // Shift the remaining elements.
+ System.arraycopy(newElements, columnIndex, newElements, columnIndex + 1,
+ elements.length - columnIndex);
+ // Insert the element at row,column.
+ newElements[columnIndex] = element;
+ // Replace the current row with one.
+ setRowAt(row, newElements);
+ return;
+ }
+ if (columnIndex < 0 || columnIndex >= elements.length) {
+ throw new RuntimeException("Illegal column number: " + column);
+ }
+ elements[columnIndex] = element;
+ }
+}
diff --git a/tests/src/com/android/inputmethod/keyboard/layout/expected/ExpectedKeyboardBuilder.java b/tests/src/com/android/inputmethod/keyboard/layout/expected/ExpectedKeyboardBuilder.java
new file mode 100644
index 000000000..61288f048
--- /dev/null
+++ b/tests/src/com/android/inputmethod/keyboard/layout/expected/ExpectedKeyboardBuilder.java
@@ -0,0 +1,272 @@
+/*
+ * Copyright (C) 2014 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 com.android.inputmethod.keyboard.layout.expected;
+
+import java.util.Arrays;
+import java.util.Locale;
+
+/**
+ * This class builds an expected keyboard for unit test.
+ */
+public final class ExpectedKeyboardBuilder extends AbstractKeyboardBuilder {
+ public ExpectedKeyboardBuilder(final int ... dimensions) {
+ super(dimensions);
+ }
+
+ public ExpectedKeyboardBuilder(final ExpectedKey[][] rows) {
+ super(rows);
+ }
+
+ @Override
+ protected ExpectedKey defaultElement() {
+ return ExpectedKey.EMPTY_KEY;
+ }
+
+ @Override
+ ExpectedKey[] newArray(final int size) {
+ return new ExpectedKey[size];
+ }
+
+ @Override
+ ExpectedKey[][] newArrayOfArray(final int size) {
+ return new ExpectedKey[size][];
+ }
+
+ @Override
+ public ExpectedKey[][] build() {
+ return super.build();
+ }
+
+ // A replacement job to be performed.
+ interface ReplaceJob {
+ // Returns a {@link ExpectedKey} object to replace.
+ ExpectedKey replace(final ExpectedKey oldKey);
+ // Return true if replacing should be stopped at first occurrence.
+ boolean stopAtFirstOccurrence();
+ }
+
+ // Replace key(s) that has the specified visual.
+ private void replaceKeyOf(final ExpectedKeyVisual visual, final ReplaceJob job) {
+ int replacedCount = 0;
+ final ExpectedKey[][] rows = build();
+ for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
+ final ExpectedKey[] keys = rows[rowIndex];
+ for (int columnIndex = 0; columnIndex < keys.length; columnIndex++) {
+ if (keys[columnIndex].getVisual().equalsTo(visual)) {
+ keys[columnIndex] = job.replace(keys[columnIndex]);
+ replacedCount++;
+ if (job.stopAtFirstOccurrence()) {
+ return;
+ }
+ }
+ }
+ }
+ if (replacedCount == 0) {
+ throw new RuntimeException(
+ "Can't find key that has visual: " + visual + " in\n" + toString(rows));
+ }
+ }
+
+ /**
+ * Set the row with specified keys that have specified labels.
+ * @param row the row number to set keys.
+ * @param labels the label texts of the keys.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder setLabelsOfRow(final int row, final String ... labels) {
+ final ExpectedKey[] keys = new ExpectedKey[labels.length];
+ for (int columnIndex = 0; columnIndex < labels.length; columnIndex++) {
+ keys[columnIndex] = ExpectedKey.newInstance(labels[columnIndex]);
+ }
+ setRowAt(row, keys);
+ return this;
+ }
+
+ /**
+ * Set the "more keys" of the key that has the specified label.
+ * @param label the label of the key to set the "more keys".
+ * @param moreKeys the array of labels of the "more keys" to be set.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder setMoreKeysOf(final String label, final String ... moreKeys) {
+ final ExpectedKey[] expectedMoreKeys = new ExpectedKey[moreKeys.length];
+ for (int index = 0; index < moreKeys.length; index++) {
+ expectedMoreKeys[index] = ExpectedKey.newInstance(moreKeys[index]);
+ }
+ setMoreKeysOf(label, expectedMoreKeys);
+ return this;
+ }
+
+ /**
+ * Set the "more keys" of the key that has the specified label.
+ * @param label the label of the key to set the "more keys".
+ * @param moreKeys the array of "more key" to be set.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder setMoreKeysOf(final String label,
+ final ExpectedKey ... moreKeys) {
+ setMoreKeysOf(ExpectedKeyVisual.newInstance(label), moreKeys);
+ return this;
+ }
+
+ /**
+ * Set the "more keys" of the key that has the specified icon.
+ * @param iconId the icon id of the key to set the "more keys".
+ * @param moreKeys the array of "more key" to be set.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder setMoreKeysOf(final int iconId, final ExpectedKey ... moreKeys) {
+ setMoreKeysOf(ExpectedKeyVisual.newInstance(iconId), moreKeys);
+ return this;
+ }
+
+ private void setMoreKeysOf(final ExpectedKeyVisual visual, final ExpectedKey[] moreKeys) {
+ replaceKeyOf(visual, new ReplaceJob() {
+ @Override
+ public ExpectedKey replace(final ExpectedKey oldKey) {
+ return ExpectedKey.newInstance(oldKey.getVisual(), oldKey.getOutput(), moreKeys);
+ }
+ @Override
+ public boolean stopAtFirstOccurrence() {
+ return true;
+ }
+ });
+ }
+
+ /**
+ * Insert the keys at specified position.
+ * @param row the row number to insert the keys.
+ * @param column the column number to insert the keys.
+ * @param keys the array of keys to insert at row,column.
+ * @return this builder.
+ * @throws {@link RuntimeException} if row or column is illegal.
+ */
+ public ExpectedKeyboardBuilder insertKeysAtRow(final int row, final int column,
+ final ExpectedKey ... keys) {
+ for (int index = 0; index < keys.length; index++) {
+ setElementAt(row, column + index, keys[index], true /* insert */);
+ }
+ return this;
+ }
+
+ /**
+ * Add the keys on the left most of the row.
+ * @param row the row number to add the keys.
+ * @param keys the array of keys to add on the left most of the row.
+ * @return this builder.
+ * @throws {@link RuntimeException} if row is illegal.
+ */
+ public ExpectedKeyboardBuilder addKeysOnTheLeftOfRow(final int row,
+ final ExpectedKey ... keys) {
+ // Keys should be inserted from the last to preserve the order.
+ for (int index = keys.length - 1; index >= 0; index--) {
+ setElementAt(row, 1, keys[index], true /* insert */);
+ }
+ return this;
+ }
+
+ /**
+ * Add the keys on the right most of the row.
+ * @param row the row number to add the keys.
+ * @param keys the array of keys to add on the right most of the row.
+ * @return this builder.
+ * @throws {@link RuntimeException} if row is illegal.
+ */
+ public ExpectedKeyboardBuilder addKeysOnTheRightOfRow(final int row,
+ final ExpectedKey ... keys) {
+ final int rightEnd = getRowAt(row).length + 1;
+ insertKeysAtRow(row, rightEnd, keys);
+ return this;
+ }
+
+ /**
+ * Replace the most top-left key that has the specified label with the new key.
+ * @param label the label of the key to set newKey.
+ * @param newKey the key to be set.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder replaceKeyOfLabel(final String label, final ExpectedKey newKey) {
+ final ExpectedKeyVisual visual = ExpectedKeyVisual.newInstance(label);
+ replaceKeyOf(visual, new ReplaceJob() {
+ @Override
+ public ExpectedKey replace(final ExpectedKey oldKey) {
+ return newKey;
+ }
+ @Override
+ public boolean stopAtFirstOccurrence() {
+ return true;
+ }
+ });
+ return this;
+ }
+
+ /**
+ * Replace the all specified keys with the new key.
+ * @param key the key to be replaced by newKey.
+ * @param newKey the key to be set.
+ * @return this builder.
+ */
+ public ExpectedKeyboardBuilder replaceKeyOfAll(final ExpectedKey key,
+ final ExpectedKey newKey) {
+ replaceKeyOf(key.getVisual(), new ReplaceJob() {
+ @Override
+ public ExpectedKey replace(final ExpectedKey oldKey) {
+ return newKey;
+ }
+ @Override
+ public boolean stopAtFirstOccurrence() {
+ return false;
+ }
+ });
+ return this;
+ }
+
+ /**
+ * Returns new keyboard instance that has upper case keys of the specified keyboard.
+ * @param rows the lower case keyboard.
+ * @param locale the locale used to convert cases.
+ * @return the upper case keyboard.
+ */
+ public static ExpectedKey[][] toUpperCase(final ExpectedKey[][] rows, final Locale locale) {
+ final ExpectedKey[][] upperCaseRows = new ExpectedKey[rows.length][];
+ for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
+ final ExpectedKey[] lowerCaseKeys = rows[rowIndex];
+ final ExpectedKey[] upperCaseKeys = new ExpectedKey[lowerCaseKeys.length];
+ for (int columnIndex = 0; columnIndex < lowerCaseKeys.length; columnIndex++) {
+ upperCaseKeys[columnIndex] = lowerCaseKeys[columnIndex].toUpperCase(locale);
+ }
+ upperCaseRows[rowIndex] = upperCaseKeys;
+ }
+ return upperCaseRows;
+ }
+
+ /**
+ * Convert the keyboard to human readable string.
+ * @param rows the keyboard to be converted to string.
+ * @return the human readable representation of rows.
+ */
+ public static String toString(final ExpectedKey[][] rows) {
+ final StringBuilder sb = new StringBuilder();
+ for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
+ if (rowIndex > 0) {
+ sb.append("\n");
+ }
+ sb.append(Arrays.toString(rows[rowIndex]));
+ }
+ return sb.toString();
+ }
+}