content: package com.anggastudio.printama.constants;
  
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.robolectric.RobolectricTestRunner;
  import org.robolectric.annotation.Config;
  
  import static org.junit.Assert.*;
  
  /**
   * Unit tests for PW (Printama Width) constants class
   * Tests all width constants and their values
   */
  @RunWith(RobolectricTestRunner.class)
  @Config(sdk = 28)
  public class PWTest {
  
      @Test
      public void testWidthConstants() {
          // Test that all width constants have correct values
          assertEquals("ORIGINAL_WIDTH should be 0", 0, PW.ORIGINAL_WIDTH);
          assertEquals("FULL_WIDTH should be -1", -1, PW.FULL_WIDTH);
          assertEquals("HALF_WIDTH should be -2", -2, PW.HALF_WIDTH);
          assertEquals("ONE_THIRD_WIDTH should be -3", -3, PW.ONE_THIRD_WIDTH);
          assertEquals("QUARTER_WIDTH should be -4", -4, PW.QUARTER_WIDTH);
          assertEquals("TWO_THIRD_WIDTH should be -5", -5, PW.TWO_THIRD_WIDTH);
          assertEquals("THREE_QUARTERS_WIDTH should be -6", -6, PW.THREE_QUARTERS_WIDTH);
      }
  
      @Test
      public void testConstantsArePublicStaticFinal() {
          // Test that constants are accessible as static fields
          int original = PW.ORIGINAL_WIDTH;
          int full = PW.FULL_WIDTH;
          int half = PW.HALF_WIDTH;
          int oneThird = PW.ONE_THIRD_WIDTH;
          int quarter = PW.QUARTER_WIDTH;
          int twoThird = PW.TWO_THIRD_WIDTH;
          int threeQuarters = PW.THREE_QUARTERS_WIDTH;
          
          // Verify they are accessible
          assertNotNull("ORIGINAL_WIDTH should be accessible", (Integer) original);
          assertNotNull("FULL_WIDTH should be accessible", (Integer) full);
          assertNotNull("HALF_WIDTH should be accessible", (Integer) half);
          assertNotNull("ONE_THIRD_WIDTH should be accessible", (Integer) oneThird);
          assertNotNull("QUARTER_WIDTH should be accessible", (Integer) quarter);
          assertNotNull("TWO_THIRD_WIDTH should be accessible", (Integer) twoThird);
          assertNotNull("THREE_QUARTERS_WIDTH should be accessible", (Integer) threeQuarters);
      }
  
      @Test
      public void testConstantsUniqueness() {
          // Test that all constants have unique values
          int[] constants = {
              PW.ORIGINAL_WIDTH, PW.FULL_WIDTH, PW.HALF_WIDTH, 
              PW.ONE_THIRD_WIDTH, PW.QUARTER_WIDTH, PW.TWO_THIRD_WIDTH, 
              PW.THREE_QUARTERS_WIDTH
          };
          
          for (int i = 0; i < constants.length; i++) {
              for (int j = i + 1; j < constants.length; j++) {
                  assertNotEquals("Constants should have unique values", constants[i], constants[j]);
              }
          }
      }
  
      @Test
      public void testConstantsRange() {
          // Test that constants are within expected range
          assertTrue("ORIGINAL_WIDTH should be non-negative", PW.ORIGINAL_WIDTH >= 0);
          assertTrue("FULL_WIDTH should be negative", PW.FULL_WIDTH < 0);
          assertTrue("HALF_WIDTH should be negative", PW.HALF_WIDTH < 0);
          assertTrue("ONE_THIRD_WIDTH should be negative", PW.ONE_THIRD_WIDTH < 0);
          assertTrue("QUARTER_WIDTH should be negative", PW.QUARTER_WIDTH < 0);
          assertTrue("TWO_THIRD_WIDTH should be negative", PW.TWO_THIRD_WIDTH < 0);
          assertTrue("THREE_QUARTERS_WIDTH should be negative", PW.THREE_QUARTERS_WIDTH < 0);
      }
  
      @Test
      public void testConstantsOrdering() {
          // Test logical ordering of width values (descending)
          assertTrue("ORIGINAL_WIDTH should be greatest", PW.ORIGINAL_WIDTH > PW.FULL_WIDTH);
          assertTrue("FULL_WIDTH should be greater than HALF_WIDTH", PW.FULL_WIDTH > PW.HALF_WIDTH);
          assertTrue("HALF_WIDTH should be greater than ONE_THIRD_WIDTH", PW.HALF_WIDTH > PW.ONE_THIRD_WIDTH);
          assertTrue("ONE_THIRD_WIDTH should be greater than QUARTER_WIDTH", PW.ONE_THIRD_WIDTH > PW.QUARTER_WIDTH);
          assertTrue("QUARTER_WIDTH should be greater than TWO_THIRD_WIDTH", PW.QUARTER_WIDTH > PW.TWO_THIRD_WIDTH);
          assertTrue("TWO_THIRD_WIDTH should be greater than THREE_QUARTERS_WIDTH", PW.TWO_THIRD_WIDTH > PW.THREE_QUARTERS_WIDTH);
      }
  
      @Test
      public void testConstantsInSwitchStatement() {
          // Test that constants can be used in switch statements
          String result = getWidthDescription(PW.ORIGINAL_WIDTH);
          assertEquals("ORIGINAL_WIDTH should work in switch", "original", result);
          
          result = getWidthDescription(PW.FULL_WIDTH);
          assertEquals("FULL_WIDTH should work in switch", "full", result);
          
          result = getWidthDescription(PW.HALF_WIDTH);
          assertEquals("HALF_WIDTH should work in switch", "half", result);
      }
  
      @Test
      public void testConstantsInArrays() {
          // Test that constants can be used in arrays
          int[] widths = {
              PW.ORIGINAL_WIDTH, PW.FULL_WIDTH, PW.HALF_WIDTH,
              PW.ONE_THIRD_WIDTH, PW.QUARTER_WIDTH, PW.TWO_THIRD_WIDTH,
              PW.THREE_QUARTERS_WIDTH
          };
          
          assertEquals("Array should contain ORIGINAL_WIDTH", PW.ORIGINAL_WIDTH, widths[0]);
          assertEquals("Array should contain FULL_WIDTH", PW.FULL_WIDTH, widths[1]);
          assertEquals("Array should contain HALF_WIDTH", PW.HALF_WIDTH, widths[2]);
          assertEquals("Array should contain ONE_THIRD_WIDTH", PW.ONE_THIRD_WIDTH, widths[3]);
          assertEquals("Array should contain QUARTER_WIDTH", PW.QUARTER_WIDTH, widths[4]);
          assertEquals("Array should contain TWO_THIRD_WIDTH", PW.TWO_THIRD_WIDTH, widths[5]);
          assertEquals("Array should contain THREE_QUARTERS_WIDTH", PW.THREE_QUARTERS_WIDTH, widths[6]);
      }
  
      @Test
      public void testConstantsComparison() {
          // Test comparison operations with constants
          assertTrue("ORIGINAL_WIDTH == 0", PW.ORIGINAL_WIDTH == 0);
          assertTrue("FULL_WIDTH == -1", PW.FULL_WIDTH == -1);
          assertTrue("HALF_WIDTH == -2", PW.HALF_WIDTH == -2);
          assertTrue("ONE_THIRD_WIDTH == -3", PW.ONE_THIRD_WIDTH == -3);
          assertTrue("QUARTER_WIDTH == -4", PW.QUARTER_WIDTH == -4);
          assertTrue("TWO_THIRD_WIDTH == -5", PW.TWO_THIRD_WIDTH == -5);
          assertTrue("THREE_QUARTERS_WIDTH == -6", PW.THREE_QUARTERS_WIDTH == -6);
      }
  
      @Test
      public void testConstantsAsMethodParameters() {
          // Test that constants can be passed as method parameters
          assertEquals("ORIGINAL_WIDTH should be valid parameter", 0, getWidthValue(PW.ORIGINAL_WIDTH));
          assertEquals("FULL_WIDTH should be valid parameter", -1, getWidthValue(PW.FULL_WIDTH));
          assertEquals("HALF_WIDTH should be valid parameter", -2, getWidthValue(PW.HALF_WIDTH));
          assertEquals("ONE_THIRD_WIDTH should be valid parameter", -3, getWidthValue(PW.ONE_THIRD_WIDTH));
          assertEquals("QUARTER_WIDTH should be valid parameter", -4, getWidthValue(PW.QUARTER_WIDTH));
          assertEquals("TWO_THIRD_WIDTH should be valid parameter", -5, getWidthValue(PW.TWO_THIRD_WIDTH));
          assertEquals("THREE_QUARTERS_WIDTH should be valid parameter", -6, getWidthValue(PW.THREE_QUARTERS_WIDTH));
      }
  
      @Test
      public void testConstantsImmutability() {
          // Test that constants maintain their values
          int originalOriginal = PW.ORIGINAL_WIDTH;
          int originalFull = PW.FULL_WIDTH;
          int originalHalf = PW.HALF_WIDTH;
          int originalOneThird = PW.ONE_THIRD_WIDTH;
          int originalQuarter = PW.QUARTER_WIDTH;
          int originalTwoThird = PW.TWO_THIRD_WIDTH;
          int originalThreeQuarters = PW.THREE_QUARTERS_WIDTH;
          
          // Simulate some operations
          performDummyOperations();
          
          // Verify constants haven't changed
          assertEquals("ORIGINAL_WIDTH should remain unchanged", originalOriginal, PW.ORIGINAL_WIDTH);
          assertEquals("FULL_WIDTH should remain unchanged", originalFull, PW.FULL_WIDTH);
          assertEquals("HALF_WIDTH should remain unchanged", originalHalf, PW.HALF_WIDTH);
          assertEquals("ONE_THIRD_WIDTH should remain unchanged", originalOneThird, PW.ONE_THIRD_WIDTH);
          assertEquals("QUARTER_WIDTH should remain unchanged", originalQuarter, PW.QUARTER_WIDTH);
          assertEquals("TWO_THIRD_WIDTH should remain unchanged", originalTwoThird, PW.TWO_THIRD_WIDTH);
          assertEquals("THREE_QUARTERS_WIDTH should remain unchanged", originalThreeQuarters, PW.THREE_QUARTERS_WIDTH);
      }
  
      @Test
      public void testConstantsDocumentationValues() {
          // Test that constants match their documented values
          assertEquals("ORIGINAL_WIDTH should be 0 as documented", 0, PW.ORIGINAL_WIDTH);
          assertEquals("FULL_WIDTH should be -1 as documented", -1, PW.FULL_WIDTH);
          assertEquals("HALF_WIDTH should be -2 as documented", -2, PW.HALF_WIDTH);
          assertEquals("ONE_THIRD_WIDTH should be -3 as documented", -3, PW.ONE_THIRD_WIDTH);
          assertEquals("QUARTER_WIDTH should be -4 as documented", -4, PW.QUARTER_WIDTH);
          assertEquals("TWO_THIRD_WIDTH should be -5 as documented", -5, PW.TWO_THIRD_WIDTH);
          assertEquals("THREE_QUARTERS_WIDTH should be -6 as documented", -6, PW.THREE_QUARTERS_WIDTH);
      }
  
      @Test
      public void testFractionalWidthRelationships() {
          // Test logical relationships between fractional widths
          // These should be ordered by their actual fraction values
          // Note: More negative values represent larger fractions
          assertTrue("THREE_QUARTERS_WIDTH should be smallest (most negative)", 
                     PW.THREE_QUARTERS_WIDTH < PW.TWO_THIRD_WIDTH);
          assertTrue("TWO_THIRD_WIDTH should be less than HALF_WIDTH", 
                     PW.TWO_THIRD_WIDTH < PW.HALF_WIDTH);
          assertTrue("HALF_WIDTH should be greater than ONE_THIRD_WIDTH", 
                     PW.HALF_WIDTH > PW.ONE_THIRD_WIDTH); // Fixed: > instead of <
          assertTrue("ONE_THIRD_WIDTH should be greater than QUARTER_WIDTH", 
                     PW.ONE_THIRD_WIDTH > PW.QUARTER_WIDTH); // Fixed: > instead of <
      }
  
      @Test
      public void testConstantsPerformance() {
          // Test that accessing constants is fast
          long startTime = System.nanoTime();
          
          // Access constants multiple times
          for (int i = 0; i < 1000; i++) {
              int original = PW.ORIGINAL_WIDTH;
              int full = PW.FULL_WIDTH;
              int half = PW.HALF_WIDTH;
              int oneThird = PW.ONE_THIRD_WIDTH;
              int quarter = PW.QUARTER_WIDTH;
              int twoThird = PW.TWO_THIRD_WIDTH;
              int threeQuarters = PW.THREE_QUARTERS_WIDTH;
          }
          
          long endTime = System.nanoTime();
          long duration = endTime - startTime;
          
          // Should be very fast (less than 1ms for 1000 accesses)
          assertTrue("Constant access should be fast", duration < 1_000_000); // 1ms in nanoseconds
      }
  
      @Test
      public void testAllConstantsCount() {
          // Test that we have the expected number of constants
          // This helps ensure no constants are missed in testing
          int[] allConstants = {
              PW.ORIGINAL_WIDTH, PW.FULL_WIDTH, PW.HALF_WIDTH,
              PW.ONE_THIRD_WIDTH, PW.QUARTER_WIDTH, PW.TWO_THIRD_WIDTH,
              PW.THREE_QUARTERS_WIDTH
          };
          
          assertEquals("Should have exactly 7 width constants", 7, allConstants.length);
      }
  
      // Helper methods for testing
      private String getWidthDescription(int width) {
          switch (width) {
              case 0: // PW.ORIGINAL_WIDTH
                  return "original";
              case -1: // PW.FULL_WIDTH
                  return "full";
              case -2: // PW.HALF_WIDTH
                  return "half";
              case -3: // PW.ONE_THIRD_WIDTH
                  return "one-third";
              case -4: // PW.QUARTER_WIDTH
                  return "quarter";
              case -5: // PW.TWO_THIRD_WIDTH
                  return "two-third";
              case -6: // PW.THREE_QUARTERS_WIDTH
                  return "three-quarters";
              default:
                  return "unknown";
          }
      }
      
      private int getWidthValue(int width) {
          return width;
      }
      
      private void performDummyOperations() {
          // Simulate some operations
          int temp = 0;
          for (int i = 0; i < 100; i++) {
              temp += i;
          }
      }
  }