How to use test_parse method in tempest

Best Python code snippet using tempest_python

e_parser.py

Source:e_parser.py

...337def parse_string(string, src_name):338    """Parse a string and returns a function"""339    input_handler_handler = Input(src_name, string)340    return parse_unit(input_handler_handler)341def test_parse(string):342    """Testing success"""343    parse_string(string, "test success")344def test_parse_fail(string):345    """Testing failure"""346    try:347        parse_string(string, "test fail")348    except ParseError:349        return350    raise Exception("Parsing did not fail for: " + string)351def test_parser():352    """Testing"""353    print("parser tests")354    # ids355    test_parse("foo;")356    test_parse("   foo    ;")357    test_parse("  foo;")358    # literals359    test_parse("42;")360    test_parse("42.42f;")361    test_parse("42e42f;")362    test_parse("42.4e4f;")363    test_parse('"test me!";')364    test_parse('"test me! \'lol\'";')365    test_parse("'test \\n newline';")366    test_parse("true;")367    test_parse("false;")368    test_parse_fail("invalid \\iesc")369    # arrays370    test_parse("[];")371    test_parse("[1,2];")372    test_parse("[1,e];")373    test_parse("['aa', 'bb', 4.4f];")374    test_parse("[1, \n3];")375    test_parse_fail("[,];")376    # objects377    test_parse("let a := {a:2, b:'c'};")378    test_parse_fail("a := {,}")379    # Comments380    test_parse("1; // comment")381    test_parse("[ 1//comment\n,a ];")382    test_parse_fail("1; // comment\n#1")383    # Unary and binary expressions384    test_parse("-1;")385    test_parse("-x + 2;")386    test_parse("x + -1;")387    test_parse("a + b;")388    test_parse("a + b + c;")389    test_parse("a + b - c;")390    test_parse("a + b * c + d;")391    test_parse("a or b or c;")392    test_parse("(a);")393    test_parse("(b ) ;")394    test_parse("(a + b);")395    test_parse("(a + (b + c));")396    test_parse("((a + b) + c);")397    test_parse("(a + b) * (c + d);")398    test_parse_fail("*a;")399    test_parse_fail("a*;")400    test_parse_fail("a # b;")401    test_parse_fail("a +;")402    test_parse_fail("a + b # c;")403    test_parse_fail("(a;")404    test_parse_fail("(a + b))")405    test_parse_fail("((a + b)")406    # Assignment407    test_parse("x := 1;")408    test_parse("x := -1;")409    test_parse("x := y := 1;")410    test_parse("let x := 3;")411    test_parse_fail("let")412    test_parse_fail("var")413    test_parse_fail("var x")414    test_parse_fail("var x:=")415    test_parse_fail("let +")416    test_parse_fail("let 3")417    # Call expressions418    test_parse("a();")419    test_parse("a(b);")420    test_parse("a(b,c);")421    test_parse("a(b,c+1);")422    test_parse("a(b,c+1,);")423    test_parse("x + a(b,c+1);")424    test_parse("x + a(b,c+1) + y;")425    test_parse("a(); b();")426    test_parse_fail("a(b c+1);")427    # package import428    test_parse("import( 'package/math' as math )")429    test_parse("import( 'package/math' as m )")430    test_parse_fail("import( '1' as one, '2', '3' as three )")431    # export statement432    test_parse("export(a, b)")433    test_parse("export(c)")434    test_parse_fail("export(1)")435    test_parse_fail("export('a')")436    # Inline IR437    test_parse("let s := $add_i32(1, 2);")438    test_parse("$array_push(arr, val);")439    # If statements440    test_parse("if (true) {x + 1;}")441    test_parse("if (x) {x+1;} else {y+1;}")442    # Assert statement443    test_parse("assert(x);")444    test_parse("assert(x, 'foo');")445    test_parse_fail("assert(x, 'foo', z);")446    # Function expression447    test_parse("fun () { return 0; }; ")448    test_parse("fun (x) {return x;};")449    test_parse("fun (x) { return x; };")450    test_parse("fun (x,y) { return x; };")451    test_parse("fun (x,y,) { return x; };")452    test_parse("fun (x,y) { return x+y; };")453    test_parse_fail("fun (x,y)")454    # Sequence/block expression455    test_parse("{ 1; 2; }")456    test_parse("fun (x) { print(x); print(y); };")457    test_parse("fun (x) { let y := x + 1; print(y); };")458    test_parse_fail("{ a, }")459    test_parse_fail("{ a, b }")460    test_parse_fail("fun () { a, };")461    # There is no empty statement...

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