This test checks block level word-spacing on justified blocks.

Next block has no word-spacing property: Default space between words is defined to be the inline-progression-dimension of the glyph-area obtained by formatting the current fo:character whose treat-as-word-space trait has the value "true". Next block has word-spacing="normal": Default space between words is defined to be the inline-progression-dimension of the glyph-area obtained by formatting the current fo:character whose treat-as-word-space trait has the value "true". Next block has word-spacing="0pt": Default space between words is defined to be the inline-progression-dimension of the glyph-area obtained by formatting the current fo:character whose treat-as-word-space trait has the value "true". Next block has word-spacing="-2pt": Default space between words is defined to be the inline-progression-dimension of the glyph-area obtained by formatting the current fo:character whose treat-as-word-space trait has the value "true". Next block has word-spacing.optimum="6pt" word-spacing.minimum="3pt" word-spacing.maximum="12pt": Default space between words is defined to be the inline-progression-dimension of the glyph-area obtained by formatting the current fo:character whose treat-as-word-space trait has the value "true".