19f7ad09a7
Add conditional expressions of the form:
foo := if lhs == rhs { then } else { otherwise }
`lhs`, `rhs`, `then`, and `otherwise` are all arbitrary expressions, and
can recursively include other conditionals. Conditionals short-circuit,
so the branch not taken isn't evaluated.
It is also possible to test for inequality with `==`.
159 lines
2.6 KiB
Rust
159 lines
2.6 KiB
Rust
use crate::common::*;
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test! {
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name: then_branch_unevaluated,
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justfile: "
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foo:
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echo {{ if 'a' == 'b' { `exit 1` } else { 'otherwise' } }}
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",
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stdout: "otherwise\n",
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stderr: "echo otherwise\n",
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}
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test! {
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name: otherwise_branch_unevaluated,
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justfile: "
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foo:
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echo {{ if 'a' == 'a' { 'then' } else { `exit 1` } }}
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",
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stdout: "then\n",
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stderr: "echo then\n",
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}
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test! {
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name: otherwise_branch_unevaluated_inverted,
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justfile: "
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foo:
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echo {{ if 'a' != 'b' { 'then' } else { `exit 1` } }}
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",
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stdout: "then\n",
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stderr: "echo then\n",
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}
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test! {
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name: then_branch_unevaluated_inverted,
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justfile: "
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foo:
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echo {{ if 'a' != 'a' { `exit 1` } else { 'otherwise' } }}
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",
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stdout: "otherwise\n",
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stderr: "echo otherwise\n",
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}
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test! {
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name: complex_expressions,
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justfile: "
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foo:
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echo {{ if 'a' + 'b' == `echo ab` { 'c' + 'd' } else { 'e' + 'f' } }}
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",
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stdout: "cd\n",
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stderr: "echo cd\n",
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}
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test! {
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name: undefined_lhs,
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justfile: "
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a := if b == '' { '' } else { '' }
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foo:
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echo {{ a }}
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",
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stdout: "",
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stderr: "
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error: Variable `b` not defined
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1 | a := if b == '' { '' } else { '' }
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| ^
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",
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status: EXIT_FAILURE,
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}
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test! {
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name: undefined_rhs,
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justfile: "
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a := if '' == b { '' } else { '' }
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foo:
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echo {{ a }}
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",
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stdout: "",
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stderr: "
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error: Variable `b` not defined
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1 | a := if '' == b { '' } else { '' }
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| ^
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",
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status: EXIT_FAILURE,
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}
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test! {
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name: undefined_then,
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justfile: "
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a := if '' == '' { b } else { '' }
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foo:
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echo {{ a }}
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",
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stdout: "",
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stderr: "
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error: Variable `b` not defined
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1 | a := if '' == '' { b } else { '' }
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| ^
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",
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status: EXIT_FAILURE,
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}
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test! {
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name: undefined_otherwise,
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justfile: "
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a := if '' == '' { '' } else { b }
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foo:
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echo {{ a }}
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",
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stdout: "",
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stderr: "
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error: Variable `b` not defined
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1 | a := if '' == '' { '' } else { b }
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| ^
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",
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status: EXIT_FAILURE,
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}
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test! {
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name: unexpected_op,
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justfile: "
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a := if '' a '' { '' } else { b }
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foo:
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echo {{ a }}
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",
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stdout: "",
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stderr: "
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error: Expected '!=', '==', or '+', but found identifier
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1 | a := if '' a '' { '' } else { b }
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",
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status: EXIT_FAILURE,
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}
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test! {
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name: dump,
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justfile: "
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a := if '' == '' { '' } else { '' }
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foo:
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echo {{ a }}
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",
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args: ("--dump"),
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stdout: format!("
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a := if '' == '' {{ '' }} else {{ '' }}{}
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foo:
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echo {{{{a}}}}
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", " ").as_str(),
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}
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