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Update EnvironmentValueArrayDecoder to emit empty values when present #133

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Update EnvironmentValueArrayDecoder to emit empty values when present #133

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71dcf04
Update split method to keep empty substrings
Adobels Dec 22, 2025
ce8c009
Update Tests for arrays with empty string and with space string
Adobels Dec 22, 2025
73337f8
Add tests for int and double arrays values
Adobels Dec 22, 2025
ae5cf01
Move NSString components to String split API
Adobels Dec 22, 2025
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2 changes: 1 addition & 1 deletion Sources/Configuration/Providers/CLI/CLIArgumentParser.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@ internal struct CLIArgumentParser {
if value.isEmpty {
return [""]
}
return value.components(separatedBy: ",")
return value.split(separator: ",", omittingEmptySubsequences: false).map(String.init)
}
}
}
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2 changes: 1 addition & 1 deletion Sources/Configuration/Providers/EnvironmentVariables/EnvironmentVariablesProvider.swift
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Expand Up @@ -345,7 +345,7 @@ internal struct EnvironmentValueArrayDecoder {
/// - Parameter string: The source string to parse.
/// - Returns: The parsed array.
func decode(_ string: String) -> [String] {
string.split(separator: separator).map { $0.trimmed() }
string.split(separator: separator, omittingEmptySubsequences: false).map { $0.trimmed() }
}
}

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44 changes: 42 additions & 2 deletions Tests/ConfigurationTests/EnvironmentVariablesProviderTests.swift
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Expand Up @@ -99,11 +99,12 @@ struct EnvironmentVariablesProviderTests {
"BOOL_NO": "NO",
"BOOL_THROWS_ERROR_EMPTY": "",
"BOOL_THROWS_ERROR_NOT_BOOL_STRING": "2",
"BOOLY_ARRAY_TRUE": "true,1,,YES",
"BOOLY_ARRAY_TRUE": "true,1,YES",
"BOOLY_ARRAY_FALSE": "false,0,NO",
"BOOLY_ARRAY_THROWS_1": "true,1,YESS",
"BOOLY_ARRAY_THROWS_2": "false,00,no",
"BOOLY_ARRAY_THROWS_3": "false, ,no",
"BOOLY_ARRAY_THROWS_3": " ,",
"BOOLY_ARRAY_THROWS_4": ",",
])
#expect(try sut.value(forKey: "BOOL_TRUE", type: .bool).value == true)
#expect(try sut.value(forKey: "BOOL_FALSE", type: .bool).value == false)
Expand All @@ -124,6 +125,45 @@ struct EnvironmentVariablesProviderTests {
#expect(throws: ConfigError.self) { try sut.value(forKey: "BOOLY_ARRAY_THROWS_1", type: .boolArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "BOOLY_ARRAY_THROWS_2", type: .boolArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "BOOLY_ARRAY_THROWS_3", type: .boolArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "BOOLY_ARRAY_THROWS_4", type: .boolArray) }
}

@available(Configuration 1.0, *)
@Test func valueForKeyOfIntArrayTypes() throws {
let sut = EnvironmentVariablesProvider(
environmentVariables: [
"INTLY_ARRAY_1": "",
"INTLY_ARRAY_2": " ",
"INTLY_ARRAY_3": ",",
"INTLY_ARRAY_4": " ,",
"INTLY_ARRAY_5": "1,,2",
"INTLY_ARRAY_6": "1, ,2",
])
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_1", type: .intArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_2", type: .intArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_3", type: .intArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_4", type: .intArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_5", type: .intArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "INTLY_ARRAY_6", type: .intArray) }
}

@available(Configuration 1.0, *)
@Test func valueForKeyOfDoubleArrayTypes() throws {
let sut = EnvironmentVariablesProvider(
environmentVariables: [
"DOUBLY_ARRAY_1": "",
"DOUBLY_ARRAY_2": " ",
"DOUBLY_ARRAY_3": ",",
"DOUBLY_ARRAY_4": " ,",
"DOUBLY_ARRAY_5": "1.1,,2.1",
"DOUBLY_ARRAY_6": "1.1, ,2.1",
])
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_1", type: .doubleArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_2", type: .doubleArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_3", type: .doubleArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_4", type: .doubleArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_5", type: .doubleArray) }
#expect(throws: ConfigError.self) { try sut.value(forKey: "DOUBLY_ARRAY_6", type: .doubleArray) }
}

@available(Configuration 1.0, *)
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