def test_braces(self):
self.expectThat(
evaluate("pre ${BAR} post", {"BAR": "quux"}, self.absent),
Equals(("pre quux post", {})))
self.expectThat(
evaluate("pre ${BAR} mid ${BAR} post", {"BAR": "quux"}, self.absent),
Equals(("pre quux mid quux post", {})))
def test_braces(self):
self.expectThat(
evaluate("pre ${BAR} post", {"BAR": "quux"}, self.absent),
Equals(("pre quux post", {})))
self.expectThat(
evaluate("pre ${BAR} mid ${BAR} post", {"BAR": "quux"},
self.absent), Equals(("pre quux mid quux post", {})))
def test_error_implicit(self):
expr = "pre " + self.cons('bar', '?', '') + " post"
self.expectThat(evaluate(expr, {'bar': 'quux'}, self.absent),
Equals(('pre quux post', {})))
if self.colon:
expected = raises(EvaluationError("Variable 'bar' null or unset."))
else:
expected = Eval(Equals(('pre post', {})))
self.expectThat(lambda: evaluate(expr, {'bar': ''}, self.absent),
expected)
if self.absent is EMPTY:
expected = raises(EvaluationError("Variable 'bar' null or unset."))
else:
expected = Eval(Equals((expr, {})))
self.expectThat(lambda: evaluate(expr, {}, self.absent), expected)
def test_simple_absent(self):
if self.absent is EMPTY:
result = ""
else:
result = "$BAR"
self.expectThat(evaluate("pre $BAR post", {}, self.absent),
Equals(("pre " + result + " post", {})))
def test_simple_absent(self):
if self.absent is EMPTY:
result = ""
else:
result = "$BAR"
self.expectThat(
evaluate("pre $BAR post", {}, self.absent),
Equals(("pre " + result + " post", {})))
def test_error_explicit(self):
expr = "pre " + self.cons('bar', '?', '$foo') + " post"
self.expectThat(
evaluate(expr, {'bar': 'quux'}, self.absent),
Equals(('pre quux post', {})))
if self.colon:
expected = raises(EvaluationError("baz"))
else:
expected = Eval(Equals(('pre post', {})))
self.expectThat(
lambda: evaluate(expr, {'bar': '', 'foo': 'baz'}, self.absent),
expected)
if self.absent is EMPTY:
expected = raises(EvaluationError("baz"))
else:
expected = Eval(Equals((expr, {})))
self.expectThat(
lambda: evaluate(expr, {'foo': 'baz'}, self.absent),
expected)
def test_alternative_values(self):
expr = "pre " + self.cons('bar', '+', '${foo}') +" post"
self.expectThat(
evaluate(expr, {'bar': 'quux', 'foo': 'baz'}, self.absent),
Equals(('pre baz post', {})))
if self.colon:
expected = Equals(('pre post', {}))
else:
expected = Equals(('pre baz post', {}))
self.expectThat(
evaluate(expr, {'bar': '', 'foo': 'baz'}, self.absent),
expected)
if self.absent is EMPTY:
expected = Equals(('pre post', {}))
else:
expected = Equals((expr, {}))
self.expectThat(
evaluate(expr, {'foo': 'baz'}, self.absent),
expected)
def test_error_explicit(self):
expr = "pre " + self.cons('bar', '?', '$foo') + " post"
self.expectThat(evaluate(expr, {'bar': 'quux'}, self.absent),
Equals(('pre quux post', {})))
if self.colon:
expected = raises(EvaluationError("baz"))
else:
expected = Eval(Equals(('pre post', {})))
self.expectThat(
lambda: evaluate(expr, {
'bar': '',
'foo': 'baz'
}, self.absent), expected)
if self.absent is EMPTY:
expected = raises(EvaluationError("baz"))
else:
expected = Eval(Equals((expr, {})))
self.expectThat(lambda: evaluate(expr, {'foo': 'baz'}, self.absent),
expected)
def test_error_implicit(self):
expr = "pre " + self.cons('bar', '?', '') + " post"
self.expectThat(
evaluate(expr, {'bar': 'quux'}, self.absent),
Equals(('pre quux post', {})))
if self.colon:
expected = raises(EvaluationError("Variable 'bar' null or unset."))
else:
expected = Eval(Equals(('pre post', {})))
self.expectThat(
lambda: evaluate(expr, {'bar': ''}, self.absent),
expected)
if self.absent is EMPTY:
expected = raises(EvaluationError("Variable 'bar' null or unset."))
else:
expected = Eval(Equals((expr, {})))
self.expectThat(
lambda: evaluate(expr, {}, self.absent),
expected)
def test_alternative_values(self):
expr = "pre " + self.cons('bar', '+', '${foo}') + " post"
self.expectThat(
evaluate(expr, {
'bar': 'quux',
'foo': 'baz'
}, self.absent), Equals(('pre baz post', {})))
if self.colon:
expected = Equals(('pre post', {}))
else:
expected = Equals(('pre baz post', {}))
self.expectThat(evaluate(expr, {
'bar': '',
'foo': 'baz'
}, self.absent), expected)
if self.absent is EMPTY:
expected = Equals(('pre post', {}))
else:
expected = Equals((expr, {}))
self.expectThat(evaluate(expr, {'foo': 'baz'}, self.absent), expected)
def test_assign_default_values(self):
expr = "pre " + self.cons('bar', '=', '${foo}') +" post"
self.expectThat(
evaluate(expr, {'bar': 'quux', 'foo': 'baz'}, self.absent),
Equals(('pre quux post', {'bar': 'quux'})))
if self.colon:
expected = Equals(('pre baz post', {'bar': 'baz'}))
else:
expected = Equals(('pre post', {'bar': ''}))
self.expectThat(
evaluate(expr, {'bar': '', 'foo': 'baz'}, self.absent),
expected)
if self.absent is EMPTY:
expected = Equals(('pre baz post', {'bar': 'baz'}))
else:
expected = Equals((expr, {}))
self.expectThat(
evaluate(expr, {'foo': 'baz'}, self.absent),
expected)
# Nested assignments bubble up.
inner = self.cons('bar', '=', 'baz')
outer = self.cons('foo', '-', inner)
if self.absent is EMPTY:
expected = Equals(('baz', {'bar': 'baz'}))
else:
expected = Equals((outer, {}))
self.expectThat(
evaluate(outer, {}, self.absent),
expected)
# Assignments are honoured inline
first = self.cons('foo', '=', 'bar')
second = self.cons('foo', '-', 'baz')
expr = first + second
if self.absent is EMPTY:
expected = Equals(('barbar', {'foo': 'bar'}))
else:
expected = Equals((expr, {}))
self.expectThat(
evaluate(expr, {}, self.absent),
expected)
def test_assign_default_values(self):
expr = "pre " + self.cons('bar', '=', '${foo}') + " post"
self.expectThat(
evaluate(expr, {
'bar': 'quux',
'foo': 'baz'
}, self.absent), Equals(('pre quux post', {
'bar': 'quux'
})))
if self.colon:
expected = Equals(('pre baz post', {'bar': 'baz'}))
else:
expected = Equals(('pre post', {'bar': ''}))
self.expectThat(evaluate(expr, {
'bar': '',
'foo': 'baz'
}, self.absent), expected)
if self.absent is EMPTY:
expected = Equals(('pre baz post', {'bar': 'baz'}))
else:
expected = Equals((expr, {}))
self.expectThat(evaluate(expr, {'foo': 'baz'}, self.absent), expected)
# Nested assignments bubble up.
inner = self.cons('bar', '=', 'baz')
outer = self.cons('foo', '-', inner)
if self.absent is EMPTY:
expected = Equals(('baz', {'bar': 'baz'}))
else:
expected = Equals((outer, {}))
self.expectThat(evaluate(outer, {}, self.absent), expected)
# Assignments are honoured inline
first = self.cons('foo', '=', 'bar')
second = self.cons('foo', '-', 'baz')
expr = first + second
if self.absent is EMPTY:
expected = Equals(('barbar', {'foo': 'bar'}))
else:
expected = Equals((expr, {}))
self.expectThat(evaluate(expr, {}, self.absent), expected)
def test_nothing(self):
self.expectThat(evaluate("", {}, self.absent), Equals(("", {})))
def test_hypothesis(self, a_string):
evaluate(a_string, {}, self.absent)
def test_simple(self):
self.expectThat(
evaluate("pre $BAR post", {"BAR": "quux"}, self.absent),
Equals(("pre quux post", {})))
def test_nothing(self):
self.expectThat(
evaluate("", {}, self.absent),
Equals(("", {})))
def test_simple(self):
self.expectThat(
evaluate("pre $BAR post", {"BAR": "quux"}, self.absent),
Equals(("pre quux post", {})))
def test_hypothesis(self, a_string):
evaluate(a_string, {}, self.absent)