68 lines
1.7 KiB
D
68 lines
1.7 KiB
D
/// Unit tests for the Antelope lexer.
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///
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/// Tests tokenization of Makefile syntax: identifiers, operators,
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/// variable references, comments, recipe lines, and line continuations.
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module antelope.tests.parser.lexer_test;
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import antelope.parser.lexer;
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/// Test basic identifier and operator tokenization.
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unittest
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{
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auto lexer = Lexer("target: prereq\n");
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auto tok = lexer.nextToken();
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assert(tok.type == TokenType.identifier);
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assert(tok.value == "target");
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tok = lexer.nextToken();
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assert(tok.type == TokenType.colon);
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tok = lexer.nextToken();
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assert(tok.type == TokenType.identifier);
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assert(tok.value == "prereq");
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}
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/// Test comment stripping — everything after '#' is ignored.
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unittest
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{
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auto lexer = Lexer("VAR = value # this is a comment\n");
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auto tok = lexer.nextToken();
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assert(tok.type == TokenType.identifier);
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assert(tok.value == "VAR");
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tok = lexer.nextToken();
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assert(tok.type == TokenType.equals);
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tok = lexer.nextToken();
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assert(tok.type == TokenType.identifier);
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assert(tok.value == "value");
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}
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/// Test line continuation (backslash-newline).
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unittest
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{
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auto lexer = Lexer("target: prereq1 \\\n prereq2\n");
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auto tok = lexer.nextToken();
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assert(tok.type == TokenType.identifier);
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assert(tok.value == "target");
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tok = lexer.nextToken();
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assert(tok.type == TokenType.colon);
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}
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/// Test variable reference prefix ($).
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unittest
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{
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auto lexer = Lexer("$(VAR)\n");
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auto tok = lexer.nextToken();
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assert(tok.type == TokenType.dollar);
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}
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/// Test recipe line detection (tab-prefixed).
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unittest
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{
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auto lexer = Lexer("\tgcc -c hello.c\n");
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auto tok = lexer.nextToken();
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assert(tok.type == TokenType.recipeLine);
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}
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