PyExprUtilsTest.java

/*
 * Copyright 2015 Google Inc.
 *
 * 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.google.template.soy.pysrc.restricted;

import static com.google.common.truth.Truth.assertThat;

import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Unit tests for CodeBuilder.
 *
 */
@RunWith(JUnit4.class)
public final class PyExprUtilsTest {

  @Test
  public void testConcatPyExprs() {
    List<PyExpr> exprs = new ArrayList<>();

    // Empty Array.
    assertThat(PyExprUtils.concatPyExprs(exprs).getText()).isEqualTo("''");

    // Single String value.
    PyExpr foo = new PyStringExpr("foo");
    exprs.add(foo);
    assertThat(PyExprUtils.concatPyExprs(exprs).getText()).isEqualTo("foo");

    // Single unknown value.
    exprs = new ArrayList<PyExpr>();
    foo = new PyExpr("foo", Integer.MAX_VALUE);
    exprs.add(foo);
    assertThat(PyExprUtils.concatPyExprs(exprs).getText()).isEqualTo("str(foo)");

    // Multiple values are added to a list to be joined at a later time.
    PyExpr bar = new PyStringExpr("bar");
    PyExpr baz = new PyStringExpr("baz");
    exprs.add(bar);
    exprs.add(baz);
    assertThat(PyExprUtils.concatPyExprs(exprs).getText()).isEqualTo("[str(foo),bar,baz]");
  }
}