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Java > Open Source Codes > edu > rice > cs > drjava > model > definitions > indent > ActionStartPrevLinePlusBackupTest


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35
36 package edu.rice.cs.drjava.model.definitions.indent;
37
38 /**
39  * Test class for an indent rule with a really long name. :-)
40  * Inherits from ActionStartPrevLinePlusTest, since this rule's functionality
41  * should be a strict extension of ActionStartPrevLinePlus.
42  * @version $Id: ActionStartPrevLinePlusBackupTest.java 3901 2006-06-30 05:28:11Z rcartwright $
43  */
44 public class ActionStartPrevLinePlusBackupTest extends ActionStartPrevLinePlusTest {
45   
46   /**
47    * Factory to enable reuse of methods from ActionStartPrevLinePlusTest.
48    * This creates an action that should behave identically to an instance of
49    * ActionStartPrevLinePlus.
50    * @param suffix the text to be added by this rule after indent padding
51    * @see ActionStartPrevLinePlus#ActionStartPrevLinePlus(String)
52    */
53   private IndentRuleAction makeAction(String JavaDoc suffix) {
54     return new ActionStartPrevLinePlusBackup(suffix, suffix.length());
55   }
56   
57   /**
58    * Factory to enable reuse of methods from ActionStartPrevLinePlusBackupTest.
59    * This works similarly to {@link #makeAction(String)}.
60    * @param suffix the text to be added by this rule after indent padding
61    * @param position the character within the suffix string before which to
62    * place the cursor
63    * @see ActionStartPrevLinePlusBackup#ActionStartPrevLinePlusBackup(String, int)
64    */
65   private IndentRuleAction makeBackupAction(String JavaDoc suffix, int position) {
66     return new ActionStartPrevLinePlusBackup(suffix, position);
67   }
68   
69   private String JavaDoc _noIndent = "foo\nbar";
70   private String JavaDoc _evenIndent = " foo\n bar";
71   private String JavaDoc _unevenIndent = " foo\nbar";
72   private String JavaDoc _noIndentRes = "foo\nabc bar";
73   private String JavaDoc _evenIndentRes = " foo\n abc bar";
74   private String JavaDoc _unevenIndentRes = " foo\n abc bar";
75   
76   /**
77    * Attempts to move current location to the start of the suffix.
78    */
79   public void testMoveToStart() throws javax.swing.text.BadLocationException JavaDoc {
80     moveTestHelper(_noIndent, _noIndentRes, 0, 7, 0, 4);
81     moveTestHelper(_evenIndent, _evenIndentRes, 0, 11, 0, 8);
82     moveTestHelper(_unevenIndent, _unevenIndentRes, 2, 9, 0, 8);
83   }
84   
85   /**
86    * Attempts to move current location to the end of the suffix.
87    */
88   public void testMoveToEnd() throws javax.swing.text.BadLocationException JavaDoc {
89     moveTestHelper(_noIndent, _noIndentRes, 0, 4, 4, 8);
90     moveTestHelper(_evenIndent, _evenIndentRes, 0, 6, 4, 12);
91     moveTestHelper(_unevenIndent, _unevenIndentRes, 2, 6, 4, 12);
92   }
93   
94   /**
95    * Attempts to move current location to the middle of the suffix.
96    */
97   public void testMoveToMiddle() throws javax.swing.text.BadLocationException JavaDoc {
98     moveTestHelper(_noIndent, _noIndentRes, 0, 4, 2, 6);
99     moveTestHelper(_evenIndent, _evenIndentRes, 0, 6, 2, 10);
100     moveTestHelper(_unevenIndent, _unevenIndentRes, 2, 6, 2, 10);
101   }
102   
103   /**
104    * Helper method for "MoveTo" tests.
105    * @param text the test text
106    * @param result the result text
107    * @param deltaLen the change in text length
108    * @param before location to set before indenting
109    * @param position param to pass to makeBackupAction
110    * @param after location to expect after indenting
111    */
112   private void moveTestHelper(String JavaDoc text, String JavaDoc result, int deltaLen,
113                               int before, int position, int after)
114       throws javax.swing.text.BadLocationException JavaDoc {
115     _setDocText(text);
116     _doc.setCurrentLocation(before); // end of bar line
117
118     String JavaDoc suffix = "abc ";
119     makeBackupAction(suffix, position).indentLine(_doc, Indenter.OTHER);
120     assertEquals("text length",
121                  text.length() + deltaLen + suffix.length(),
122                  _doc.getLength());
123     assertEquals("text contents", result, _doc.getText());
124     assertEquals("location", after, _doc.getCurrentLocation());
125   }
126 }
127
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