def example_1() -> ast.Program:
"""
Instantiates program example 1 as a native AST
"""
return ast.Program(
ast.Body([
# source = live remote "www.coviddata.com/stream"
ast.Loader(ast.Var("source"),
ast.Source("www.coviddata.com/stream")),
# map source "case_date" to number date
ast.Mapper(ast.Var("source"), "case_date",
ast.Declare(ast.Type(Types.NUMBER), ast.Var("date"))),
# number count = 0
ast.Assigner(ast.Declare(ast.Type(Types.NUMBER), ast.Var("count")),
ast.Value(IntegerValue(0))),
# on new data from source count++
ast.Trigger(ast.Var("source"), ast.MathFuncs([ast.Increment(ast.Var(
"count"))])),
# plot xy date age titled age_graph
ast.Plotter(ast.Graph(ScatterXYGraph()),
ast.VarAxis(ast.Var("date")),
ast.VarAxis(ast.Var("age")), "age_graph"),
# plot line xy date log(count) titled cases_log
ast.Plotter(ast.Graph(LineXYGraph()),
ast.VarAxis(ast.Var("date")),
ast.FuncAxis(ast.BuiltinFunc(NumFunction.LOG, ast.Var(
"count"))),
"age_graph"),
]))
def test_diff_map_declare_var(self):
self.assertFalse(
ast_equal(
ast.Program(
ast.Body([
ast.Mapper(
ast.Var("source"), "case_date",
ast.Declare(ast.Type(Types.NUMBER),
ast.Var("date")))
])),
ast.Program(
ast.Body([
ast.Mapper(
ast.Var("source"), "case_date",
ast.Declare(ast.Type(Types.NUMBER),
ast.Var("count")))
]))))
def parseMapper(self) -> ast.Mapper:
self.tokenizer.get_and_check_next("map")
self.tokenizer.get_and_check_next("\(")
var = self.parseVar()
self.tokenizer.get_and_check_next("\)")
map_from = self.parseString()
self.tokenizer.get_and_check_next("to")
declare = self.parseDeclare()
return ast.Mapper(var, map_from, declare)
def test_diff_order(self):
self.assertFalse(
ast_equal(
ast.Program(
ast.Body([
ast.commands_ast.Loader(
ast.Var("source"),
ast.Source("www.coviddata.com/stream")),
ast.Mapper(
ast.Var("source"), "case_date",
ast.Declare(ast.Type(Types.NUMBER),
ast.Var("date")))
])),
ast.Program(
ast.Body([
ast.Mapper(
ast.Var("source"), "case_date",
ast.Declare(ast.Type(Types.NUMBER),
ast.Var("date"))),
ast.commands_ast.Loader(
ast.Var("source"),
ast.Source("www.coviddata.com/stream")),
]))))
def test_plot_undefined_axis(self):
"""
Should briefly create a plot then error
"""
print("Testing undefined variable in Axis")
program = ast.Program(
ast.Body([
ast.Loader(ast.Var("source"),
ast.Source("https://covid-api.com/api/reports")),
ast.Mapper(
ast.Var("source"), "confirmed",
ast.Declare(ast.Type(Types.NUMBER), ast.Var("confirmed"))),
ast.Plotter(
ast.Graph(ScatterXYGraph()), ast.VarAxis(ast.Var("t")),
ast.FuncAxis(ast.BuiltinFunc(NumFunction.SIN,
ast.Var("t"))), "sine_wave"),
]))
e = Evaluator(graphics=False)
code, err = e.evaluate(program, duration=4000)
self.assertNotEqual(0, code)
self.assertTrue(isinstance(err, UndefinedVariableError))
def test_regular(self):
p_expected: ast.Program = ast.Program(
ast.Body([
# source = live remote "https://covid-api.com/api/reports"
ast.Loader(ast.Var("source"),
ast.Source("https://covid-api.com/api/reports")),
# map source "confirmed" to number confirmed
ast.Mapper(
ast.Var("source"), "confirmed",
ast.Declare(ast.Type(Types.NUMBER), ast.Var("confirmed"))),
# number count = 0
ast.Assigner(
ast.Declare(ast.Type(Types.NUMBER), ast.Var("count")),
ast.Value(values.IntegerValue(0))),
# observe(source) do count++
ast.Trigger(ast.Var("source"),
ast.MathFuncs([ast.Increment(ast.Var("count"))])),
# plot line_xy(count,confirmed) called "confirmed_cases"
ast.Plotter(ast.Graph(graphs.LineXYGraph()),
ast.VarAxis(ast.Var("count")),
ast.VarAxis(ast.Var("confirmed")),
"confirmed_cases"),
]))
def parse(content) -> ast.Program:
t = Tokenizer(content)
t.tokenize()
return Parser(t).parseProgram()
p: ast.Program = read_program_file(
"tests/res/programs/regular_program.mstx", parse)
self.assertTrue(ast_equal(p_expected, p))
def test_regular_program(self):
"""
Should successfully create a plot and update with
new values
"""
print("Testing a full program")
p = ast.Program(
ast.Body([
# source = live remote "https://covid-api.com/api/reports"
ast.Loader(ast.Var("source"),
ast.Source("https://covid-api.com/api/reports")),
# map source "confirmed" to number confirmed
ast.Mapper(
ast.Var("source"), "confirmed",
ast.Declare(ast.Type(Types.NUMBER), ast.Var("confirmed"))),
# number count = 0
ast.Assigner(
ast.Declare(ast.Type(Types.NUMBER), ast.Var("count")),
ast.Value(values.IntegerValue(0))),
# observe(source) do count++
ast.Trigger(ast.Var("source"),
ast.MathFuncs([ast.Increment(ast.Var("count"))])),
# plot line_xy(count,confirmed) called "confirmed_cases"
ast.Plotter(ast.Graph(graphs.LineXYGraph()),
ast.VarAxis(ast.Var("count")),
ast.VarAxis(ast.Var("confirmed")),
"confirmed_cases"),
]))
e = Evaluator(graphics=True)
code, err = e.evaluate(p, duration=7000)
self.assertEqual(0, code)