assertEquals( $expect, $changeSet, $message ); } public static function provider_getChangeSet() { return [ [ 'Duplicate content must generate no changes', // Expected change set [], // Left text "a\nb\nc", // Right text "a\nb\nc", ], [ 'Removing blank lines must generate no changes', // Expected change set [], // Left text "a\n\nb\n\nc", // Right text "a\nb\nc\n", ], [ 'Must generate a single add change with only lines added', // Expected change set [ self::mockAction( 'add', "foo\nbar", 1 ) ], // Left "something", // Right "foo\nbar\nsomething", ], [ 'Must generate a single subtract change with only lines subtracted', // Expected change set [ self::mockAction( 'subtract', "Zomg\nHiHiHi", 2 ) ], // Left "dummy\nZomg\nHiHiHi", // Right "dummy", ], [ 'Adding content seperated by no change must generate multiple changes', // Expected change set [ self::mockAction( 'add', 'b1', 3 ), self::mockAction( 'add', "d1\nd2", 5, 6 ), ], // Left text "a\nb\nc\nd\ne\nf", // Right text "a\nb\nb1\nc\nd\nd1\nd2\ne\nf", ], [ 'Additon with empty line should be one action', // Expected change set [ self::mockAction( 'add', "User\n\nSignature", 1 ) ], // Left text "", // Right text "User\n\nSignature", ], [ 'Extra blank lines on the edges must be trimmed', // Expected change set [ self::mockAction( 'add', "Zomg\nHiHiHi", 1 ) ], // Left text "", // Right text "\nZomg\nHiHiHi\n", ], [ 'Extra blank lines inside the content must not be trimmed', // Expected change set [ self::mockAction( 'add', "\nZomg\nHiHiHi\n", 2 ) ], // Left text "foo\nbar", // Right text "foo\n\nZomg\nHiHiHi\n\nbar", ], [ 'A blank line replaced with content must be an add', // Expected change set [ self::mockAction( 'add', 'cowbell', 1 ) ], // Left Text "", // Right Text "cowbell", ], [ 'A blanked out line must be a subtraction', // Expected change set [ self::mockAction( 'subtract', 'cowbell', 1 ) ], // Left text "cowbell", // Right text "", ], [ 'A line with its content replaced must be a change', // Expected change set [ self::mockChange( 'Its all about the journey', 'dummy', 1 ) ], // Left text "Its all about the journey", // Right text "dummy", ], [ 'Changing lines and adding more must result in two changes', // Expected change set [ self::mockChange( 'Must be in a hurry to finish this thing', 'Must be in a hurry', 1 ), self::mockAction( 'add', 'Finish this thing', 2 ), ], // Left text "Must be in a hurry to finish this thing", // Right text "Must be in a hurry\nFinish this thing", ], [ 'Changing multiple lines and adding more must result in two changes', // Expected change set [ self::mockChange( "Must not be\nin much of a hurry", "Must be\nin a hurry", 2 ), self::mockAction( 'subtract', "to finish\nthis thing", 4 ), ], // Left text "abc\nMust not be\nin much of a hurry\nto finish\nthis thing", // Right text "abc\nMust be\nin a hurry", ], [ 'Must generate multiple add, change, and subtract actions', // Expected change set [ self::mockChange( "abc\nSome", "Other\nThings", 1 ), self::mockAction( 'subtract', "Stuff", 3 ), self::mockChange( "And\nThen", "There\nWas", 6, 5 ), self::mockAction( 'add', 'Fencing', 8, 7 ), ], // Left text "abc\nSome\nStuff\ndef\nghi\nAnd\nThen\njkl\nmno", // Right text "\nOther\nThings\ndef\nghi\nThere\nWas\nFencing\njkl\nmno", ], ]; } protected static function mockAction( $action, $content, $left, $right = null ) { if ( $right === null ) { $right = $left; } return [ 'action' => $action, 'content' => $content, 'left-pos' => $left, 'right-pos' => $right, ]; } public static function mockChange( $oldContent, $newContent, $left, $right = null ) { if ( $right === null ) { $right = $left; } return [ 'action' => 'change', 'old_content' => $oldContent, 'new_content' => $newContent, 'left-pos' => $left, 'right-pos' => $right, ]; } }