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Behavior specs cleanup: Improve character class specs

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This commit is contained in:
David Majda 2015-01-12 16:23:08 +01:00
parent 54191fbf12
commit 74be12c657
1 changed files with 61 additions and 49 deletions
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46
spec/behavior/generated-parser-behavior.spec.js
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@ -282,58 +282,69 @@ describe("generated parser behavior", function() {
});
describe("character class", function() {
it("matches empty class correctly", function() {
describe("matching", function() {
it("matches empty classes", function() {
var parser = PEG.buildParser('start = []', options);
expect(parser).toFailToParse("a");
});
it("matches class with a character list correctly", function() {
it("matches classes with a character list", function() {
var parser = PEG.buildParser('start = [abc]', options);
expect(parser).toParse("a", "a");
expect(parser).toParse("b", "b");
expect(parser).toParse("c", "c");
expect(parser).toParse("a");
expect(parser).toParse("b");
expect(parser).toParse("c");
expect(parser).toFailToParse("d");
});
it("matches class with a range correctly", function() {
it("matches classes with a character range", function() {
var parser = PEG.buildParser('start = [a-c]', options);
expect(parser).toParse("a", "a");
expect(parser).toParse("b", "b");
expect(parser).toParse("c", "c");
expect(parser).toParse("a");
expect(parser).toParse("b");
expect(parser).toParse("c");
expect(parser).toFailToParse("d");
});
it("matches inverted class correctly", function() {
it("matches inverted classes", function() {
var parser = PEG.buildParser('start = [^a]', options);
expect(parser).toFailToParse("a");
expect(parser).toParse("b", "b");
expect(parser).toParse("b");
});
it("is case sensitive without the \"i\" flag", function() {
var parser = PEG.buildParser('start = [a]', options);
expect(parser).toParse("a", "a");
expect(parser).toParse("a");
expect(parser).toFailToParse("A");
});
it("is case insensitive with the \"i\" flag", function() {
var parser = PEG.buildParser('start = [a]i', options);
expect(parser).toParse("a", "a");
expect(parser).toParse("A", "A");
expect(parser).toParse("a");
expect(parser).toParse("A");
});
});
it("advances position on success", function() {
describe("when it matches", function() {
it("returns the matched character", function() {
var parser = PEG.buildParser('start = [a]', options);
expect(parser).toParse("a", "a");
});
it("advances parse position past the matched character", function() {
var parser = PEG.buildParser('start = [a] .', options);
expect(parser).toParse("ab", ["a", "b"]);
expect(parser).toParse("ab");
});
});
it("sets expectation correctly on failure", function() {
describe("when it doesn't match", function() {
it("reports match failure and records an expectation of type \"class\"", function() {
var parser = PEG.buildParser('start = [a]', options);
expect(parser).toFailToParse("b", {
@ -341,6 +352,7 @@ describe("generated parser behavior", function() {
});
});
});
});
describe("dot", function() {
it("matches correctly", function() {