PtyCommandLineTest.java

/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * 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.intellij.execution;

import com.intellij.execution.configurations.GeneralCommandLine;
import com.intellij.execution.configurations.PtyCommandLine;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.text.StringUtil;
import org.jetbrains.annotations.NotNull;

import static org.junit.Assume.assumeTrue;

public class PtyCommandLineTest extends GeneralCommandLineTest {
  @Override
  public void redirectInput() {
    assumeTrue(false);
  }

  @NotNull
  @Override
  protected String filterExpectedOutput(@NotNull String output) {
    if (SystemInfo.isWindows) output = StringUtil.trimTrailing(expandTabs(output, 8));
    return output;
  }

  @Override
  protected GeneralCommandLine createCommandLine(String... command) {
    PtyCommandLine cmd = new PtyCommandLine();

    if (command.length > 0) {
      cmd.setExePath(command[0]);

      for (int i = 1; i < command.length; i++) {
        cmd.addParameter(command[i]);
      }
    }

    return cmd;
  }

  @SuppressWarnings("SameParameterValue")
  @NotNull
  private static String expandTabs(@NotNull String s, int tabSize) {
    StringBuilder sb = new StringBuilder();
    int col = 0;
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c == '\t') {
        int tabWidth = tabSize - col % tabSize;
        StringUtil.repeatSymbol(sb, ' ', tabWidth);
        col += tabWidth;
      }
      else {
        sb.append(c);
        col = StringUtil.isLineBreak(c) ? 0 : (col + 1);
      }
    }
    return sb.toString();
  }
}