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|
import SwiftFormat
/// Sanity checks and regression tests for the `respectsExistingLineBreaks` configuration setting
/// in both true and false states.
final class RespectsExistingLineBreaksTests: PrettyPrintTestCase {
func testExpressions() {
let input =
"""
a = b + c
+ d
+ e + f + g
+ h + i
"""
let expectedRespecting =
"""
a =
b + c
+ d
+ e + f
+ g
+ h + i
"""
assertPrettyPrintEqual(
input: input, expected: expectedRespecting, linelength: 12,
configuration: configuration(respectingExistingLineBreaks: true))
let expectedNotRespecting =
"""
a =
b + c + d + e + f + g
+ h + i
"""
assertPrettyPrintEqual(
input: input, expected: expectedNotRespecting, linelength: 25,
configuration: configuration(respectingExistingLineBreaks: false))
}
func testCodeBlocksAndMemberDecls() {
let input =
"""
import Module
import Other
struct FitsOnOneLine {
var x: Int
}
struct Foo {
var storedProperty: Int =
100
var readOnlyProperty: Int {
return
200
}
var readWriteProperty: Int {
get {
return
somethingElse
}
set {
somethingElse =
newValue
}
}
func oneLiner() -> Int {
return 500
}
func someFunction(
x: Int
) {
foo(x)
bar(x)
}
}
"""
// No changes expected when respecting existing newlines.
assertPrettyPrintEqual(
input: input, expected: input + "\n", linelength: 80,
configuration: configuration(respectingExistingLineBreaks: true))
let expectedNotRespecting =
"""
import Module
import Other
struct FitsOnOneLine { var x: Int }
struct Foo {
var storedProperty: Int = 100
var readOnlyProperty: Int { return 200 }
var readWriteProperty: Int {
get { return somethingElse }
set { somethingElse = newValue }
}
func oneLiner() -> Int { return 500 }
func someFunction(x: Int) {
foo(x)
bar(x)
}
}
"""
assertPrettyPrintEqual(
input: input, expected: expectedNotRespecting, linelength: 80,
configuration: configuration(respectingExistingLineBreaks: false))
}
func testSemicolons() {
let input =
"""
foo(); bar();
baz();
struct Foo {
var a: Int; var b: Int;
var c: Int;
}
"""
// When respecting newlines, we should leave semicolon-delimited statements and declarations on
// the same line if they were originally like that and likewise preserve newlines after
// semicolons if present.
assertPrettyPrintEqual(
input: input, expected: input + "\n", linelength: 80,
configuration: configuration(respectingExistingLineBreaks: true))
let expectedNotRespecting =
"""
foo();
bar();
baz();
struct Foo {
var a: Int;
var b: Int;
var c: Int;
}
"""
// When not respecting newlines every semicolon-delimited statement or declaration should end up
// on its own line.
assertPrettyPrintEqual(
input: input, expected: expectedNotRespecting, linelength: 80,
configuration: configuration(respectingExistingLineBreaks: false))
}
func testInvalidBreaksAreAlwaysRejected() {
// Verify that newlines in places where a break would not be allowed are removed, regardless of
// the configuration setting.
let input =
"""
func foo
(bar
: Int) ->
Int {
return bar * 2
}
"""
let expectedRespecting =
"""
func foo(bar: Int) -> Int {
return bar * 2
}
"""
assertPrettyPrintEqual(
input: input, expected: expectedRespecting, linelength: 80,
configuration: configuration(respectingExistingLineBreaks: true))
let expectedNotRespecting =
"""
func foo(bar: Int) -> Int { return bar * 2 }
"""
assertPrettyPrintEqual(
input: input, expected: expectedNotRespecting, linelength: 80,
configuration: configuration(respectingExistingLineBreaks: false))
}
/// Creates a new configuration with the given value for `respectsExistingLineBreaks` and default
/// values for everything else.
private func configuration(respectingExistingLineBreaks: Bool) -> Configuration {
var config = Configuration.forTesting
config.respectsExistingLineBreaks = respectingExistingLineBreaks
return config
}
}
|
