65 lines
No EOL
2.3 KiB
C++
65 lines
No EOL
2.3 KiB
C++
#include "spec_helper.h"
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extern ts_parse_config ts_parse_config_arithmetic;
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START_TEST
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describe("arithmetic", []() {
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ts_document *doc;
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before_each([&]() {
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doc = ts_document_make();
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ts_document_set_parser(doc, ts_parse_config_arithmetic);
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});
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after_each([&]() {
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ts_document_free(doc);
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});
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it("parses variables", [&]() {
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ts_document_set_text(doc, "x");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable))))"));
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});
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it("parses numbers", [&]() {
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ts_document_set_text(doc, "5");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (number))))"));
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});
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it("parses products of variables", [&]() {
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ts_document_set_text(doc, "x + y");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable))) (plus) (term (factor (variable))))"));
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ts_document_set_text(doc, "x * y");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable)) (times) (factor (variable))))"));
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});
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it("parses complex trees", [&]() {
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ts_document_set_text(doc, "x * y + z * a");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable)) (times) (factor (variable))) (plus) (term (factor (variable)) (times) (factor (variable))))"));
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ts_document_set_text(doc, "x * (y + z)");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable)) (times) (factor (expression (term (factor (variable))) (plus) (term (factor (variable)))))))"));
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});
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describe("error recovery", [&]() {
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it("recovers from errors at the top level", [&]() {
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ts_document_set_text(doc, "x * * y");
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AssertThat(string(ts_document_string(doc)), Equals("(ERROR)"));
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});
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it("recovers from errors in parenthesized expressions", [&]() {
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ts_document_set_text(doc, "x + (y * + z) * 5");
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AssertThat(string(ts_document_string(doc)), Equals(
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"(expression (term (factor (variable))) (plus) (term (factor (ERROR)) (times) (factor (number))))"));
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});
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});
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});
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END_TEST |