#56 Adds ImageInstruction class and JUnit for it.

src/main/java/org/openRealmOfStars/starMap/newsCorp/ImageInstruction.java

@@ -0,0 +1,108 @@
+package org.openRealmOfStars.starMap.newsCorp;
+
+/**
+*
+* Open Realm of Stars game project
+* Copyright (C) 2017  Tuomo Untinen
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, see http://www.gnu.org/licenses/
+*
+*
+* Image instruction class.
+*
+*/
+public class ImageInstruction {
+  /**
+   * Instructions for background
+   */
+  public static final String BACKGROUND = "background";
+  /**
+   * Instructions for texts
+   */
+  public static final String TEXT = "text";
+  /**
+   * Instructions for planet
+   */
+  public static final String PLANET = "planet";
+  /**
+   * Instructions for Relation symbol between two text
+   */
+  public static final String RELATION_SYMBOL = "relation_symbol";
+  /**
+   * Instructions for ship
+   */
+  public static final String SHIP = "ship";
+
+  /**
+   * String builder used to collect all the instructions
+   */
+  private StringBuilder sb;
+  /**
+   * Constructor for Image instruction
+   */
+  public ImageInstruction() {
+    sb = new StringBuilder();
+  }
+
+  /**
+   * Character for starting parameters
+   */
+  private static final String PARAM_START = "(";
+
+  /**
+   * Character for ending parameters
+   */
+  private static final String PARAM_END = ")";
+
+  /**
+   * Instruction delimeter
+   */
+  private static final String INSTRUCTION_DELIM = "+";
+
+  /**
+   * Check if there is instruction delimiter if it is missing
+   * this will add it there too.
+   */
+  private void checkDelim() {
+    if (sb.length() > 0 && sb.charAt(sb.length() - 1) != '+') {
+      sb.append(INSTRUCTION_DELIM);
+    }
+  }
+  /**
+   * Add background to image instructions
+   * @param backgroundName Background name
+   * @return ImageInstruction with background
+   */
+  public ImageInstruction addBackground(final String backgroundName) {
+    checkDelim();
+    sb.append(BACKGROUND);
+    sb.append(PARAM_START);
+    sb.append(backgroundName);
+    sb.append(PARAM_END);
+    return this;
+  }
+
+  /**
+   * Build actual instructions
+   * @return instruction string
+   */
+  public String build() {
+    return toString();
+  }
+
+  @Override
+  public String toString() {
+    return sb.toString();
+  }
+}

src/test/java/org/openRealmOfStars/starMap/newsCorp/ImageInstructionTest.java

@@ -0,0 +1,41 @@
+package org.openRealmOfStars.starMap.newsCorp;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+/**
+*
+* Open Realm of Stars game project
+* Copyright (C) 2017  Tuomo Untinen
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, see http://www.gnu.org/licenses/
+*
+*
+* Image instruction class.
+*
+*/
+public class ImageInstructionTest {
+
+  @Test
+  public void testBackground() {
+    ImageInstruction instruction = new ImageInstruction();
+    instruction.addBackground("gradient");
+    assertEquals("background(gradient)", instruction.toString());
+    assertEquals("background(gradient)", instruction.build());
+    instruction.addBackground("black");
+    assertEquals("background(gradient)+background(black)", instruction.build());
+  }
+
+}