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Behavior specs cleanup: Improve sequence specs

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David Majda 2015-01-24 20:02:06 +01:00
parent 548209b48b
commit b3828919e2
1 changed files with 18 additions and 6 deletions
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24
spec/behavior/generated-parser-behavior.spec.js
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@ -770,16 +770,28 @@ describe("generated parser behavior", function() {
}); });
describe("sequence", function() { describe("sequence", function() {
it("matches correctly", function() { describe("when all expressions match", function() {
var parser = PEG.buildParser('start = "a" "b" "c"', options); it("returns an array of their match results", function() {
var parser = PEG.buildParser('start = "a" "b" "c"', options);
expect(parser).toParse("abc", ["a", "b", "c"]); expect(parser).toParse("abc", ["a", "b", "c"]);
});
}); });
it("does not advance position on failure", function() { describe("when any expression doesn't match", function() {
var parser = PEG.buildParser('start = "a" "b" / "a"', options); it("reports match failure", function() {
var parser = PEG.buildParser('start = "a" "b" "c"', options);
expect(parser).toParse("a", "a"); expect(parser).toFailToParse("dbc");
expect(parser).toFailToParse("adc");
expect(parser).toFailToParse("abd");
});
it("resets parse position", function() {
var parser = PEG.buildParser('start = "a" "b" / "a"', options);
expect(parser).toParse("a", "a");
});
}); });
}); });