1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// Copyright 2006 The Bazel Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.syntax;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import com.google.devtools.build.lib.syntax.util.EvaluationTestCase;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.util.Arrays;
import java.util.Map;
import java.util.TreeMap;
/**
* Tests for {@link BaseFunction}.
* This tests the argument processing by BaseFunction
* between the outer call(posargs, kwargs, ast, env) and the inner call(args, ast, env).
*/
@RunWith(JUnit4.class)
public class BaseFunctionTest extends EvaluationTestCase {
/**
* Handy implementation of {@link BaseFunction} that returns all its args as a list.
* (We'd use SkylarkList.tuple, but it can't handle null.)
*/
private static class TestingBaseFunction extends BaseFunction {
TestingBaseFunction(FunctionSignature signature) {
super("mixed", signature);
}
@Override
public Object call(Object[] arguments, FuncallExpression ast, Environment env) {
return Arrays.asList(arguments);
}
}
private void checkBaseFunction(BaseFunction func, String callExpression, String expectedOutput)
throws Exception {
setUp();
update(func.getName(), func);
if (expectedOutput.charAt(0) == '[') { // a tuple => expected to pass
assertEquals("Wrong output for " + callExpression,
expectedOutput, eval(callExpression).toString());
} else { // expected to fail with an exception
try {
eval(callExpression);
fail();
} catch (EvalException e) {
assertEquals("Wrong exception for " + callExpression,
expectedOutput, e.getMessage());
}
}
}
private static final String[] BASE_FUNCTION_EXPRESSIONS = {
"mixed()",
"mixed(1)",
"mixed(1, 2)",
"mixed(1, 2, 3)",
"mixed(1, 2, wiz=3, quux=4)",
"mixed(foo=1)",
"mixed(bar=2)",
"mixed(foo=1, bar=2)",
"mixed(bar=2, foo=1)",
"mixed(2, foo=1)",
"mixed(bar=2, foo=1, wiz=3)",
};
public void checkBaseFunctions(boolean onlyNamedArguments,
String expectedSignature, String... expectedResults) throws Exception {
BaseFunction func = new TestingBaseFunction(
onlyNamedArguments
? FunctionSignature.namedOnly(1, "foo", "bar")
: FunctionSignature.of(1, "foo", "bar"));
assertThat(func.toString()).isEqualTo(expectedSignature);
for (int i = 0; i < BASE_FUNCTION_EXPRESSIONS.length; i++) {
String expr = BASE_FUNCTION_EXPRESSIONS[i];
String expected = expectedResults[i];
checkBaseFunction(func, expr, expected);
}
}
@Test
public void testNoSurplusArguments() throws Exception {
checkBaseFunctions(false, "mixed(foo, bar = ?)",
"insufficient arguments received by mixed(foo, bar = ?) (got 0, expected at least 1)",
"[1, null]",
"[1, 2]",
"too many (3) positional arguments in call to mixed(foo, bar = ?)",
"unexpected keywords 'quux', 'wiz' in call to mixed(foo, bar = ?)",
"[1, null]",
"missing mandatory positional argument 'foo' while calling mixed(foo, bar = ?)",
"[1, 2]",
"[1, 2]",
"argument 'foo' passed both by position and by name in call to mixed(foo, bar = ?)",
"unexpected keyword 'wiz' in call to mixed(foo, bar = ?)");
}
@Test
public void testOnlyNamedArguments() throws Exception {
checkBaseFunctions(true, "mixed(*, foo, bar = ?)",
"missing mandatory keyword arguments in call to mixed(*, foo, bar = ?)",
"mixed(*, foo, bar = ?) does not accept positional arguments, but got 1",
"mixed(*, foo, bar = ?) does not accept positional arguments, but got 2",
"mixed(*, foo, bar = ?) does not accept positional arguments, but got 3",
"mixed(*, foo, bar = ?) does not accept positional arguments, but got 2",
"[1, null]",
"missing mandatory named-only argument 'foo' while calling mixed(*, foo, bar = ?)",
"[1, 2]",
"[1, 2]",
"mixed(*, foo, bar = ?) does not accept positional arguments, but got 1",
"unexpected keyword 'wiz' in call to mixed(*, foo, bar = ?)");
}
@Test
@SuppressWarnings("unchecked")
public void testKwParam() throws Exception {
eval("def foo(a, b, c=3, d=4, *args, e, f, g=7, h=8, **kwargs):\n"
+ " return (a, b, c, d, e, f, g, h, args, kwargs)\n"
+ "v1 = foo(1, 2, e=5, f=6)\n"
+ "v2 = foo(1, *['x', 'y', 'z', 't'], h=9, e=5, f=6, i=0)\n"
+ "def bar(**kwargs):\n"
+ " return kwargs\n"
+ "b1 = bar(name='foo', type='jpg', version=42)\n"
+ "b2 = bar()\n");
assertThat(Printer.repr(lookup("v1")))
.isEqualTo("(1, 2, 3, 4, 5, 6, 7, 8, (), {})");
assertThat(Printer.repr(lookup("v2")))
.isEqualTo("(1, \"x\", \"y\", \"z\", 5, 6, 7, 9, (\"t\",), {\"i\": 0})");
// NB: the conversion to a TreeMap below ensures the keys are sorted.
assertThat(Printer.repr(
new TreeMap<String, Object>((Map<String, Object>) lookup("b1"))))
.isEqualTo("{\"name\": \"foo\", \"type\": \"jpg\", \"version\": 42}");
assertThat(Printer.repr(lookup("b2"))).isEqualTo("{}");
}
}
|
