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## 6.2. Does Content Fit in Predefined Form Fields?

### Initial Situation

A PDF document is created using a document template with empty fields as place holders for text, e.g. the address of a customer in an advertising letter. At runtime the fields are filled with text.

### Problem

The text could be larger than the available size of the field.

### Solution Approach

PDFUnit provides methods to detect text overflow.

### Solution

    @Test
    public void noTextOverflow_AllFields() throws Exception {
      String filename = "documentUnderTest.pdf";

      AssertThat.document(filename)
                .hasFields()
                .allWithoutTextOverflow()
      ;
    }

A similar test can be done with one field:

    @Test
    public void noTextOverflow_OneField() throws Exception {
      String filename = "documentUnderTest.pdf";
      String fieldname = "Textfield, text inside, align left:";

      AssertThat.document(filename)
                .hasField(fieldname)
                .withoutTextOverflow()
      ;
    }

Chapter 3.14: “Form Fields - Text Overflow” describes this subject in detail.

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