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Cassian Florin
23 lines
854 B
Swift
23 lines
854 B
Swift
import XCTest
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@testable import MooToolNativeCore
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final class TextDiffServiceTests: XCTestCase {
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func testBuildsLineDiffWithSummary() {
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let result = TextDiffService.diff(
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original: "alpha\nbeta\ngamma",
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revised: "alpha\nbeta changed\ngamma\ndelta"
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)
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XCTAssertEqual(result.summary, TextDiffSummary(unchanged: 2, added: 2, removed: 1))
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XCTAssertEqual(result.lines.map(\.kind), [.unchanged, .removed, .added, .unchanged, .added])
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XCTAssertEqual(result.lines.map(\.text), ["alpha", "beta", "beta changed", "gamma", "delta"])
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}
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func testEmptyTextsHaveNoDiffLines() {
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let result = TextDiffService.diff(original: "", revised: "")
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XCTAssertTrue(result.lines.isEmpty)
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XCTAssertEqual(result.summary, TextDiffSummary(unchanged: 0, added: 0, removed: 0))
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}
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}
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