public void returns_expected_when_no_variables_has_been_provided_but_single_variable_is_referenced()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>();
var result = sut.ExpandVariables(stubVariables, "foo $(BAR)");
Assert.Equal("foo $(BAR)", result);
}
public void throws_expected_exception_when_one_variable_references_another_none_declared_variable()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{ "BAR", "bar $(NOT-DECLARED)" },
};
Assert.Throws <VariableNotDeclaredException>(() => sut.ExpandVariables(stubVariables, "foo $(BAR)"));
}
public void prevents_self_reference_in_variables()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{ "FOO", "$(FOO)" },
};
Assert.Throws <CircularVariableReferenceException>(() => sut.ExpandVariables(stubVariables, "foo"));
}
public void prevents_direct_circular_references_between_variables()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{ "FOO", "$(BAR)" },
{ "BAR", "$(FOO)" },
};
Assert.Throws <CircularVariableReferenceException>(() => sut.ExpandVariables(stubVariables, "foo $(BAR)"));
}
public void returns_expected_when_expanding_environment_variable_that_does_not_exist()
{
var sut = new VariableHelperBuilder()
.WithEnvironmentVariableProvider(new StubEnvironmentVariableProvider())
.Build();
var stubEmptyVariables = new Dictionary <string, string>();
var result = sut.ExpandVariables(stubEmptyVariables, "foo ${BAR}");
Assert.Equal("foo ${BAR}", result);
}
public void returns_expected_when_variable_is_expanded_inside_quotes()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{ "BAR", "bar" }
};
var result = sut.ExpandVariables(stubVariables, "foo \"$(BAR)\"");
Assert.Equal("foo \"bar\"", result);
}
public void returns_expected_when_single_variable_has_been_provided_and_no_variables_are_referenced()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{
"dummy", "dummy"
}
};
var result = sut.ExpandVariables(stubVariables, "foo");
Assert.Equal("foo", result);
}
public void variables_can_reference_other_variables_in_random_order()
{
var sut = new VariableHelperBuilder().Build();
var stubVariables = new Dictionary <string, string>
{
{ "QUX", "qux" },
{ "BAZ", "baz $(QUX)" },
{ "BAR", "bar $(BAZ)" },
};
var result = sut.ExpandVariables(stubVariables, "foo $(BAR)");
Assert.Equal("foo bar baz qux", result);
}
public void returns_expected_when_expanding_multiple_environment_variables()
{
var stubEnvVarValues = new Dictionary <string, string>
{
{ "FOO", "foo" },
{ "BAR", "bar" },
{ "BAZ", "baz" },
{ "QUX", "qux" },
};
var sut = new VariableHelperBuilder()
.WithEnvironmentVariableProvider(new FakeEnvironmentVariableProvider(stubEnvVarValues))
.Build();
var stubEmptyVariables = new Dictionary <string, string>();
var result = sut.ExpandVariables(stubEmptyVariables, "foo ${BAR} ${BAZ} ${QUX}");
Assert.Equal("foo bar baz qux", result);
}
public void returns_expected_when_expanding_variable_with_environment_variable_reference_inside()
{
var stubEnvVarValues = new Dictionary <string, string>
{
{ "BAZ", "baz" },
{ "QUX", "qux" },
};
var sut = new VariableHelperBuilder()
.WithEnvironmentVariableProvider(new FakeEnvironmentVariableProvider(stubEnvVarValues))
.Build();
var stubVariables = new Dictionary <string, string>
{
{ "BAR", "${BAZ} ${QUX}" }
};
var result = sut.ExpandVariables(stubVariables, "foo $(BAR)");
Assert.Equal("foo baz qux", result);
}