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|
final class StringTests: PrettyPrintTestCase {
func testStrings() {
let input =
"""
let a = "abc"
myFun("Some string \\(a + b)")
let b = "A really long string that should not wrap"
let c = "A really long string with \\(a + b) some expressions \\(c + d)"
"""
let expected =
"""
let a = "abc"
myFun("Some string \\(a + b)")
let b =
"A really long string that should not wrap"
let c =
"A really long string with \\(a + b) some expressions \\(c + d)"
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 35)
}
func testMultilineStringOpenQuotesDoNotWrapIfStringIsVeryLong() {
let input =
#"""
let someString = """
this string's total
length will be longer
than the column limit
even though none of
its individual lines
are.
"""
"""#
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 30)
}
func testMultilineStringWithAssignmentOperatorInsteadOfPatternBinding() {
let input =
#"""
someString = """
this string's total
length will be longer
than the column limit
even though none of
its individual lines
are.
"""
"""#
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 30)
}
func testMultilineStringUnlabeledArgumentIsReindentedCorrectly() {
let input =
#"""
functionCall(longArgument, anotherLongArgument, """
some multi-
line string
""")
"""#
let expected =
#"""
functionCall(
longArgument,
anotherLongArgument,
"""
some multi-
line string
""")
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 25)
}
func testMultilineStringLabeledArgumentIsReindentedCorrectly() {
let input =
#"""
functionCall(longArgument: x, anotherLongArgument: y, longLabel: """
some multi-
line string
""")
"""#
let expected =
#"""
functionCall(
longArgument: x,
anotherLongArgument: y,
longLabel: """
some multi-
line string
""")
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 25)
}
func testMultilineStringInterpolations() {
let input =
#"""
let x = """
\(1) 2 3
4 \(5) 6
7 8 \(9)
"""
"""#
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 25)
}
func testMultilineRawString() {
let input =
##"""
let x = #"""
"""who would
ever do this"""
"""#
"""##
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 25)
}
func testMultilineRawStringOpenQuotesWrap() {
let input =
#"""
let aLongVariableName = """
some
multi-
line
string
"""
"""#
let expected =
#"""
let aLongVariableName =
"""
some
multi-
line
string
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 25)
}
func testMultilineStringAutocorrectMisalignedLines() {
let input =
#"""
let x = """
the
second
line is
wrong
"""
"""#
let expected =
#"""
let x = """
the
second
line is
wrong
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 25)
}
func testMultilineStringKeepsBlankLines() {
// This test not only ensures that the blank lines are retained in the first place, but that
// the newlines are mandatory and not collapsed to the maximum number allowed by the formatter
// configuration.
let input =
#"""
let x = """
there should be
gaps all around here
"""
"""#
let expected =
#"""
let x = """
there should be
gaps all around here
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 25)
}
func testMultilineStringPreservesTrailingBackslashes() {
let input =
#"""
let x = """
there should be \
backslashes at \
the end of \
every line \
except this one
"""
"""#
let expected =
#"""
let x = """
there should be \
backslashes at \
the end of \
every line \
except this one
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testMultilineStringInParenthesizedExpression() {
let input =
#"""
let x = ("""
this is a
multiline string
""")
"""#
let expected =
#"""
let x =
("""
this is a
multiline string
""")
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testMultilineStringAfterStatementKeyword() {
let input =
#"""
return """
this is a
multiline string
"""
return """
this is a
multiline string
""" + "hello"
"""#
let expected =
#"""
return """
this is a
multiline string
"""
return """
this is a
multiline string
""" + "hello"
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testMultilineStringsInExpressionWithNarrowMargins() {
let input =
#"""
x = """
abcdefg
hijklmn
""" + """
abcde
hijkl
"""
"""#
let expected =
#"""
x = """
abcdefg
hijklmn
"""
+ """
abcde
hijkl
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 9)
}
func testMultilineStringsInExpression() {
let input =
#"""
let x = """
this is a
multiline string
""" + """
this is more
multiline string
"""
"""#
let expected =
#"""
let x = """
this is a
multiline string
""" + """
this is more
multiline string
"""
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testLeadingMultilineStringsInOtherExpressions() {
// The stacked indentation behavior needs to drill down into different node types to find the
// leftmost multiline string literal. This makes sure that we cover various cases.
let input =
#"""
let bytes = """
{
"key": "value"
}
""".utf8.count
let json = """
{
"key": "value"
}
""".data(using: .utf8)
let slice = """
{
"key": "value"
}
"""[...]
let forceUnwrap = """
{
"key": "value"
}
"""!
let optionalChaining = """
{
"key": "value"
}
"""?
let postfix = """
{
"key": "value"
}
"""^*^
let prefix = +"""
{
"key": "value"
}
"""
let postfixIf = """
{
"key": "value"
}
"""
#if FLAG
.someMethod
#endif
// Like the infix operator cases, cast operations force the string's open quotes to wrap.
// This could be considered consistent if you look at it through the right lens. Let's make
// sure to test it so that we can see if the behavior ever changes accidentally.
let cast =
"""
{
"key": "value"
}
""" as NSString
let typecheck =
"""
{
"key": "value"
}
""" is NSString
"""#
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 100)
}
func testMultilineStringsAsEnumRawValues() {
let input = #"""
enum E: String {
case x = """
blah blah
"""
}
"""#
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 100)
}
func testMultilineStringsNestedInAnotherWrappingContext() {
let input =
#"""
guard
let x = """
blah
blah
""".data(using: .utf8) {
print(x)
}
"""#
let expected =
#"""
guard
let x = """
blah
blah
""".data(using: .utf8)
{
print(x)
}
"""#
assertPrettyPrintEqual(input: input, expected: expected, linelength: 100)
}
func testEmptyMultilineStrings() {
let input =
##"""
let x = """
"""
let y =
"""
"""
let x = #"""
"""#
let y =
#"""
"""#
"""##
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 20)
}
func testOnlyBlankLinesMultilineStrings() {
let input =
##"""
let x = """
"""
let y =
"""
"""
let x = #"""
"""#
let y =
#"""
"""#
"""##
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 20)
}
}
|
