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import SwiftFormat
final class FunctionCallTests: PrettyPrintTestCase {
func testBasicFunctionCalls_noPackArguments() {
let input =
"""
let a = myFunc()
let a = myFunc(var1: 123, var2: "abc")
let a = myFunc(var1: 123, var2: "abc", var3: Bool, var4: (1, 2, 3))
let a = myFunc(var1, var2, var3)
let a = myFunc(var1, var2, var3, var4, var5, var6)
let a = myFunc(var1, var2, var3, var4, var5, var6, var7, x)
let a = myFunc(var1: 123, var2: someFun(var1: "abc", var2: 123, var3: Bool, var4: 1.23))
"""
let expected =
"""
let a = myFunc()
let a = myFunc(var1: 123, var2: "abc")
let a = myFunc(
var1: 123,
var2: "abc",
var3: Bool,
var4: (1, 2, 3)
)
let a = myFunc(var1, var2, var3)
let a = myFunc(
var1,
var2,
var3,
var4,
var5,
var6
)
let a = myFunc(
var1,
var2,
var3,
var4,
var5,
var6,
var7,
x
)
let a = myFunc(
var1: 123,
var2: someFun(
var1: "abc",
var2: 123,
var3: Bool,
var4: 1.23
)
)
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45, configuration: config)
}
func testBasicFunctionCalls_packArguments() {
let input =
"""
let a = myFunc()
let a = myFunc(var1: 123, var2: "abc")
let a = myFunc(var1: 123, var2: "abc", var3: Bool, var4: (1, 2, 3))
let a = myFunc(var1, var2, var3)
let a = myFunc(var1, var2, var3, var4, var5, var6)
let a = myFunc(var1, var2, var3, var4, var5, var6, var7, x)
let a = myFunc(var1: 123, var2: someFun(var1: "abc", var2: 123, var3: Bool, var4: 1.23))
"""
let expected =
"""
let a = myFunc()
let a = myFunc(var1: 123, var2: "abc")
let a = myFunc(
var1: 123, var2: "abc", var3: Bool,
var4: (1, 2, 3))
let a = myFunc(var1, var2, var3)
let a = myFunc(
var1, var2, var3, var4, var5, var6)
let a = myFunc(
var1, var2, var3, var4, var5, var6, var7, x
)
let a = myFunc(
var1: 123,
var2: someFun(
var1: "abc", var2: 123, var3: Bool,
var4: 1.23))
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45, configuration: config)
}
func testDiscretionaryLineBreakBeforeClosingParenthesis() {
let input =
"""
let a = myFunc(
var1: 123,
var2: "abc"
)
"""
assertPrettyPrintEqual(input: input, expected: input + "\n", linelength: 45)
}
func testDiscretionaryLineBreaksAreSelfCorrecting() {
// A discretionary line break should never permit a violation of the rule that says,
// effectively, "if a closing delimiter does not fit on the same line as its matching open
// delimiter, then the open delimiter is the last token on that line" (which is implemented in
// Oppen using consistent breaking groups). The line break we insert, if working correctly,
// should force the entire group to be moved down as we want.
let input =
"""
let a = myFunc(var1: 123, var2: "abc"
)
"""
let expected =
"""
let a = myFunc(
var1: 123, var2: "abc"
)
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45, configuration: config)
}
func testArgumentStartsWithOpenDelimiter() {
let input =
"""
myFunc(someArray: [
])
myFunc(someArray: [1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000])
myFunc(someDictionary: [
:])
myFunc(someDictionary: ["foo": "bar", "baz": "quux", "gli": "glop"])
myFunc(someClosure: {
})
myFunc(someClosure: { (a, b, c) in
})
myFunc(someClosure: { foo, bar in baz(1000, 2000, 3000, 4000, 5000) })
myFunc(someArray: [1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000]) { foo in bar() }
myFunc(someArray: [1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000]) { foo in someMuchLongerLineBreakingBarFunction() }
"""
let expected =
"""
myFunc(someArray: [])
myFunc(someArray: [
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
])
myFunc(someDictionary: [:])
myFunc(someDictionary: [
"foo": "bar", "baz": "quux", "gli": "glop",
])
myFunc(someClosure: {
})
myFunc(someClosure: { (a, b, c) in
})
myFunc(someClosure: { foo, bar in
baz(1000, 2000, 3000, 4000, 5000)
})
myFunc(someArray: [
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
]) { foo in bar() }
myFunc(someArray: [
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
]) { foo in
someMuchLongerLineBreakingBarFunction()
}
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45)
}
func testSingleUnlabeledArgumentWithDelimiters() {
let input =
"""
myFunc([1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000])
myFunc(["foo": "bar", "baz": "quux", "glip": "glop"])
myFunc({ foo, bar in baz(1000, 2000, 3000, 4000, 5000) })
myFunc([1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000]) { foo in bar() }
myFunc([1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000]) { foo in someMuchLongerLineBreakingBarFunction() }
"""
let expected =
"""
myFunc([
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
])
myFunc([
"foo": "bar", "baz": "quux",
"glip": "glop",
])
myFunc({ foo, bar in
baz(1000, 2000, 3000, 4000, 5000)
})
myFunc([
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
]) { foo in bar() }
myFunc([
1000, 2000, 3000, 4000, 5000, 6000, 7000,
8000,
]) { foo in
someMuchLongerLineBreakingBarFunction()
}
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45)
}
func testNestedFunctionCallExprSequences() {
let input =
"""
let result = firstObj.someOptionalReturningFunc(foo: arg) ?? (someOtherObj as SomeUsefulType).someGetterFunc()
"""
let expected =
"""
let result =
firstObj.someOptionalReturningFunc(foo: arg)
?? (someOtherObj as SomeUsefulType).someGetterFunc()
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 60)
}
func testDiscretionaryLineBreakAfterColon() {
let input =
"""
myFunc(
a:
foo,
b:
bar + baz + qux,
c: Very.Deeply.Nested.Member,
d:
Very.Deeply.Nested.Member
)
"""
let expected =
"""
myFunc(
a:
foo,
b:
bar + baz + qux,
c: Very.Deeply
.Nested.Member,
d:
Very.Deeply
.Nested.Member
)
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testDiscretionaryLineBreakBeforeTrailingClosure() {
let input =
"""
foo(a, b, c)
{
blah()
}
foo(
a, b, c
)
{
blah()
}
foo(arg1, arg2, arg3, arg4, arg5, arg6, arg7)
{
blah()
}
foo(ab, arg1, arg2) {
blah()
}
"""
let expected =
"""
foo(a, b, c) {
blah()
}
foo(
a, b, c
) {
blah()
}
foo(
arg1, arg2, arg3,
arg4, arg5, arg6,
arg7
) {
blah()
}
foo(ab, arg1, arg2)
{
blah()
}
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 20)
}
func testGroupsTrailingComma() {
let input =
"""
foo(
image: useLongName ? image(named: .longNameImage) : image(named: .veryLongNameImageZ),
bar: bar)
"""
let expected =
"""
foo(
image: useLongName
? image(named: .longNameImage)
: image(named: .veryLongNameImageZ),
bar: bar)
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 70)
}
func testMultipleTrailingClosures() {
let input =
"""
a = f { b } c: { d }
let a = f { b } c: { d }
let a = foo { b in b } c: { d in d }
let a = foo { abcdefg in b } c: { d in d }
"""
let expected =
"""
a = f {
b
} c: {
d
}
let a = f {
b
} c: {
d
}
let a = foo { b in
b
} c: { d in
d
}
let a = foo {
abcdefg in
b
} c: { d in
d
}
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 23)
}
}
|
