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Add lexer test for escape sequence

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This commit is contained in:
David Jennes
2018-09-22 03:33:40 +02:00
parent e77bd22e83
commit 652dcd246d
1 changed files with 29 additions and 14 deletions
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39
Tests/StencilTests/LexerSpec.swift
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@@ -5,6 +5,11 @@ import Spectre
class LexerTests: XCTestCase {
func testLexer() {
describe("Lexer") {
func makeSourceMap(_ token: String, for lexer: Lexer, options: String.CompareOptions = []) -> SourceMap {
guard let range = lexer.templateString.range(of: token, options: options) else { fatalError("Token not found") }
return SourceMap(location: lexer.rangeLocation(range))
}
$0.it("can tokenize text") {
let lexer = Lexer(templateString: "Hello World")
let tokens = lexer.tokenize()
@@ -44,9 +49,9 @@ class LexerTests: XCTestCase {
let tokens = lexer.tokenize()
try expect(tokens.count) == 3
try expect(tokens[0]) == Token.text(value: "My name is ", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "My name is ")!)))
try expect(tokens[1]) == Token.variable(value: "myname", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "myname")!)))
try expect(tokens[2]) == Token.text(value: ".", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: ".")!)))
try expect(tokens[0]) == Token.text(value: "My name is ", at: makeSourceMap("My name is ", for: lexer))
try expect(tokens[1]) == Token.variable(value: "myname", at: makeSourceMap("myname", for: lexer))
try expect(tokens[2]) == Token.text(value: ".", at: makeSourceMap(".", for: lexer))
}
$0.it("can tokenize two variables without being greedy") {
@@ -55,8 +60,8 @@ class LexerTests: XCTestCase {
let tokens = lexer.tokenize()
try expect(tokens.count) == 2
try expect(tokens[0]) == Token.variable(value: "thing", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "thing")!)))
try expect(tokens[1]) == Token.variable(value: "name", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "name")!)))
try expect(tokens[0]) == Token.variable(value: "thing", at: makeSourceMap("thing", for: lexer))
try expect(tokens[1]) == Token.variable(value: "name", at: makeSourceMap("name", for: lexer))
}
$0.it("can tokenize an unclosed block") {
@@ -85,18 +90,28 @@ class LexerTests: XCTestCase {
}}{%
endif %}.
"""
let lexer = Lexer(templateString: templateString)
let tokens = lexer.tokenize()
try expect(tokens.count) == 5
try expect(tokens[0]) == Token.text(value: "My name is ", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "My name is")!)))
try expect(tokens[1]) == Token.block(value: "if name and name", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "{%")!)))
try expect(tokens[2]) == Token.variable(value: "name", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "name", options: [.backwards])!)))
try expect(tokens[3]) == Token.block(value: "endif", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: "endif")!)))
try expect(tokens[4]) == Token.text(value: ".", at: SourceMap(location: lexer.rangeLocation(templateString.range(of: ".")!)))
try expect(tokens[0]) == Token.text(value: "My name is ", at: makeSourceMap("My name is", for: lexer))
try expect(tokens[1]) == Token.block(value: "if name and name", at: makeSourceMap("{%", for: lexer))
try expect(tokens[2]) == Token.variable(value: "name", at: makeSourceMap("name", for: lexer, options: .backwards))
try expect(tokens[3]) == Token.block(value: "endif", at: makeSourceMap("endif", for: lexer))
try expect(tokens[4]) == Token.text(value: ".", at: makeSourceMap(".", for: lexer))
}
$0.it("can tokenize escape sequences") {
let templateString = "class Some {{ '{' }}{% if true %}{{ stuff }}{% endif %}"
let lexer = Lexer(templateString: templateString)
let tokens = lexer.tokenize()
try expect(tokens.count) == 5
try expect(tokens[0]) == Token.text(value: "class Some ", at: makeSourceMap("class Some ", for: lexer))
try expect(tokens[1]) == Token.variable(value: "'{'", at: makeSourceMap("'{'", for: lexer))
try expect(tokens[2]) == Token.block(value: "if true", at: makeSourceMap("if true", for: lexer))
try expect(tokens[3]) == Token.variable(value: "stuff", at: makeSourceMap("stuff", for: lexer))
try expect(tokens[4]) == Token.block(value: "endif", at: makeSourceMap("endif", for: lexer))
}
}
}