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How to use isattrs method in Pytest

Best Python code snippet using pytest

util.py

Source:util.py

...79def isset(x):80    return isinstance(x, (set, frozenset))81def isdatacls(obj):82    return getattr(obj, "__dataclass_fields__", None) is not None83def isattrs(obj):84    return getattr(obj, "__attrs_attrs__", None) is not None85def isiterable(obj):86    try:87        iter(obj)88        return not istext(obj)89    except TypeError:90        return False91def assertrepr_compare(config, op, left, right):92    """Return specialised explanations for some operators/operands"""93    width = 80 - 15 - len(op) - 2  # 15 chars indentation, 1 space around op94    left_repr = saferepr(left, maxsize=int(width // 2))95    right_repr = saferepr(right, maxsize=width - len(left_repr))96    summary = "{} {} {}".format(left_repr, op, right_repr)97    verbose = config.getoption("verbose")98    explanation = None99    try:100        if op == "==":101            if istext(left) and istext(right):102                explanation = _diff_text(left, right, verbose)103            else:104                if issequence(left) and issequence(right):105                    explanation = _compare_eq_sequence(left, right, verbose)106                elif isset(left) and isset(right):107                    explanation = _compare_eq_set(left, right, verbose)108                elif isdict(left) and isdict(right):109                    explanation = _compare_eq_dict(left, right, verbose)110                elif type(left) == type(right) and (isdatacls(left) or isattrs(left)):111                    type_fn = (isdatacls, isattrs)112                    explanation = _compare_eq_cls(left, right, verbose, type_fn)113                elif verbose > 0:114                    explanation = _compare_eq_verbose(left, right)115                if isiterable(left) and isiterable(right):116                    expl = _compare_eq_iterable(left, right, verbose)117                    if explanation is not None:118                        explanation.extend(expl)119                    else:120                        explanation = expl121        elif op == "not in":122            if istext(left) and istext(right):123                explanation = _notin_text(left, right, verbose)124    except outcomes.Exit:125        raise126    except Exception:127        explanation = [128            "(pytest_assertion plugin: representation of details failed.  "129            "Probably an object has a faulty __repr__.)",130            str(_pytest._code.ExceptionInfo.from_current()),131        ]132    if not explanation:133        return None134    return [summary] + explanation135def _diff_text(left, right, verbose=0):136    """Return the explanation for the diff between text or bytes.137    Unless --verbose is used this will skip leading and trailing138    characters which are identical to keep the diff minimal.139    If the input are bytes they will be safely converted to text.140    """141    from difflib import ndiff142    explanation = []143    def escape_for_readable_diff(binary_text):144        """145        Ensures that the internal string is always valid unicode, converting any bytes safely to valid unicode.146        This is done using repr() which then needs post-processing to fix the encompassing quotes and un-escape147        newlines and carriage returns (#429).148        """149        r = str(repr(binary_text)[1:-1])150        r = r.replace(r"\n", "\n")151        r = r.replace(r"\r", "\r")152        return r153    if isinstance(left, bytes):154        left = escape_for_readable_diff(left)155    if isinstance(right, bytes):156        right = escape_for_readable_diff(right)157    if verbose < 1:158        i = 0  # just in case left or right has zero length159        for i in range(min(len(left), len(right))):160            if left[i] != right[i]:161                break162        if i > 42:163            i -= 10  # Provide some context164            explanation = [165                "Skipping %s identical leading characters in diff, use -v to show" % i166            ]167            left = left[i:]168            right = right[i:]169        if len(left) == len(right):170            for i in range(len(left)):171                if left[-i] != right[-i]:172                    break173            if i > 42:174                i -= 10  # Provide some context175                explanation += [176                    "Skipping {} identical trailing "177                    "characters in diff, use -v to show".format(i)178                ]179                left = left[:-i]180                right = right[:-i]181    keepends = True182    if left.isspace() or right.isspace():183        left = repr(str(left))184        right = repr(str(right))185        explanation += ["Strings contain only whitespace, escaping them using repr()"]186    explanation += [187        line.strip("\n")188        for line in ndiff(left.splitlines(keepends), right.splitlines(keepends))189    ]190    return explanation191def _compare_eq_verbose(left, right):192    keepends = True193    left_lines = repr(left).splitlines(keepends)194    right_lines = repr(right).splitlines(keepends)195    explanation = []196    explanation += ["-" + line for line in left_lines]197    explanation += ["+" + line for line in right_lines]198    return explanation199def _compare_eq_iterable(left, right, verbose=0):200    if not verbose:201        return ["Use -v to get the full diff"]202    # dynamic import to speedup pytest203    import difflib204    left_formatting = pprint.pformat(left).splitlines()205    right_formatting = pprint.pformat(right).splitlines()206    explanation = ["Full diff:"]207    explanation.extend(208        line.strip() for line in difflib.ndiff(left_formatting, right_formatting)209    )210    return explanation211def _compare_eq_sequence(left, right, verbose=0):212    comparing_bytes = isinstance(left, bytes) and isinstance(right, bytes)213    explanation = []214    len_left = len(left)215    len_right = len(right)216    for i in range(min(len_left, len_right)):217        if left[i] != right[i]:218            if comparing_bytes:219                # when comparing bytes, we want to see their ascii representation220                # instead of their numeric values (#5260)221                # using a slice gives us the ascii representation:222                # >>> s = b'foo'223                # >>> s[0]224                # 102225                # >>> s[0:1]226                # b'f'227                left_value = left[i : i + 1]228                right_value = right[i : i + 1]229            else:230                left_value = left[i]231                right_value = right[i]232            explanation += [233                "At index {} diff: {!r} != {!r}".format(i, left_value, right_value)234            ]235            break236    if comparing_bytes:237        # when comparing bytes, it doesn't help to show the "sides contain one or more items"238        # longer explanation, so skip it239        return explanation240    len_diff = len_left - len_right241    if len_diff:242        if len_diff > 0:243            dir_with_more = "Left"244            extra = saferepr(left[len_right])245        else:246            len_diff = 0 - len_diff247            dir_with_more = "Right"248            extra = saferepr(right[len_left])249        if len_diff == 1:250            explanation += [251                "{} contains one more item: {}".format(dir_with_more, extra)252            ]253        else:254            explanation += [255                "%s contains %d more items, first extra item: %s"256                % (dir_with_more, len_diff, extra)257            ]258    return explanation259def _compare_eq_set(left, right, verbose=0):260    explanation = []261    diff_left = left - right262    diff_right = right - left263    if diff_left:264        explanation.append("Extra items in the left set:")265        for item in diff_left:266            explanation.append(saferepr(item))267    if diff_right:268        explanation.append("Extra items in the right set:")269        for item in diff_right:270            explanation.append(saferepr(item))271    return explanation272def _compare_eq_dict(left, right, verbose=0):273    explanation = []274    set_left = set(left)275    set_right = set(right)276    common = set_left.intersection(set_right)277    same = {k: left[k] for k in common if left[k] == right[k]}278    if same and verbose < 2:279        explanation += ["Omitting %s identical items, use -vv to show" % len(same)]280    elif same:281        explanation += ["Common items:"]282        explanation += pprint.pformat(same).splitlines()283    diff = {k for k in common if left[k] != right[k]}284    if diff:285        explanation += ["Differing items:"]286        for k in diff:287            explanation += [saferepr({k: left[k]}) + " != " + saferepr({k: right[k]})]288    extra_left = set_left - set_right289    len_extra_left = len(extra_left)290    if len_extra_left:291        explanation.append(292            "Left contains %d more item%s:"293            % (len_extra_left, "" if len_extra_left == 1 else "s")294        )295        explanation.extend(296            pprint.pformat({k: left[k] for k in extra_left}).splitlines()297        )298    extra_right = set_right - set_left299    len_extra_right = len(extra_right)300    if len_extra_right:301        explanation.append(302            "Right contains %d more item%s:"303            % (len_extra_right, "" if len_extra_right == 1 else "s")304        )305        explanation.extend(306            pprint.pformat({k: right[k] for k in extra_right}).splitlines()307        )308    return explanation309def _compare_eq_cls(left, right, verbose, type_fns):310    isdatacls, isattrs = type_fns311    if isdatacls(left):312        all_fields = left.__dataclass_fields__313        fields_to_check = [field for field, info in all_fields.items() if info.compare]314    elif isattrs(left):315        all_fields = left.__attrs_attrs__316        fields_to_check = [field.name for field in all_fields if field.cmp]317    same = []318    diff = []319    for field in fields_to_check:320        if getattr(left, field) == getattr(right, field):321            same.append(field)322        else:323            diff.append(field)324    explanation = []325    if same and verbose < 2:326        explanation.append("Omitting %s identical items, use -vv to show" % len(same))327    elif same:328        explanation += ["Matching attributes:"]...

niudu-nix-scope.py

Source:niudu-nix-scope.py

1import os2import sys3from PySide2 import QtGui, QtWidgets4import subprocess5import json6app = QtWidgets.QApplication(sys.argv)7class ScopeView(QtWidgets.QTreeView):8    def __init__(self, *args, **kwargs):9        super().__init__(*args, **kwargs)10        self.model = QtGui.QStandardItemModel()11        self.setModel(self.model)12        self.setHeaderHidden(True)13        self.expanded.connect(self.expanded__handler)14        self.add_items('(import <nixpkgs> {})', self.model.invisibleRootItem())15    def expanded__handler(self, index):16        parent_item = self.model.itemFromIndex(index)17        parent_item.removeRows(0, parent_item.rowCount())18        attr_path = ''19        parent_item_tmp = parent_item20        while parent_item_tmp is not None and parent_item_tmp is not self.model.invisibleRootItem():21            attr_path = '.' + parent_item_tmp.text() + attr_path22            parent_item_tmp = parent_item_tmp.parent()23        self.add_items('(import <nixpkgs> {})'+attr_path, parent_item)24    def add_items(self, set_expr, parent_item):25        #command = "nix-instantiate --strict --eval -E 'with rec {set_is_pkg = set: builtins.isAttrs set && builtins.hasAttr "type" set && builtins.getAttr "type" set == "derivation"; filter_pkgs = attr_set: builtins.filter (attr_name: (builtins.tryEval (set_is_pkg (builtins.getAttr attr_name attr_set))).value) (builtins.attrNames attr_set); }; filter_pkgs " + set_expr + "' --json"26        process = subprocess.Popen(["nix-instantiate", "--strict", "--eval", "-E", "with rec {set_is_pkg = set: builtins.isAttrs set && builtins.hasAttr \"type\" set && builtins.getAttr \"type\" set == \"derivation\"; filter_pkgs = attr_set: builtins.filter (attr_name: (builtins.tryEval (set_is_pkg (builtins.getAttr attr_name attr_set))).value) (builtins.attrNames attr_set); }; filter_pkgs "+set_expr, "--json"], stdout=subprocess.PIPE)27        (output, _) = process.communicate()28        _ = process.wait()29        for attr in json.loads(output):30            child_item = QtGui.QStandardItem(attr)31            parent_item.appendRow(child_item)32            child_item.appendRow(QtGui.QStandardItem(''))33scope_view = ScopeView()34class MainWindow(QtWidgets.QMainWindow):35    def __init__(self, *args, **kwargs):36        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)37        central_widget = scope_view38        self.setCentralWidget(central_widget)39window = MainWindow()40window.show()...

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