mirror of
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104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
package eval_test
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import (
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"os"
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"testing"
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"src.elv.sh/pkg/diag"
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. "src.elv.sh/pkg/eval"
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"src.elv.sh/pkg/must"
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"src.elv.sh/pkg/eval/errs"
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. "src.elv.sh/pkg/eval/evaltest"
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"src.elv.sh/pkg/eval/vals"
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"src.elv.sh/pkg/testutil"
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)
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func TestKindOf(t *testing.T) {
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Test(t,
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That("kind-of a []").Puts("string", "list"),
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thatOutputErrorIsBubbled("kind-of a"),
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)
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}
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func TestConstantly(t *testing.T) {
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Test(t,
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That(`var f = (constantly foo); $f; $f`).Puts("foo", "foo"),
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thatOutputErrorIsBubbled("(constantly foo)"),
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)
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}
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func TestCallCommand(t *testing.T) {
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Test(t,
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That(`call {|arg &opt=v| put $arg $opt } [foo] [&opt=bar]`).
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Puts("foo", "bar"),
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That(`call { } [foo] [&[]=bar]`).
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Throws(errs.BadValue{What: "option key", Valid: "string", Actual: "list"}),
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)
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}
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func TestEval(t *testing.T) {
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Test(t,
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That("eval 'put x'").Puts("x"),
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// Using variable from the local scope.
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That("var x = foo; eval 'put $x'").Puts("foo"),
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// Setting a variable in the local scope.
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That("var x = foo; eval 'set x = bar'; put $x").Puts("bar"),
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// Using variable from the upvalue scope.
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That("var x = foo; { nop $x; eval 'put $x' }").Puts("foo"),
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// Specifying a namespace.
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That("var n = (ns [&x=foo]); eval 'put $x' &ns=$n").Puts("foo"),
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// Altering variables in the specified namespace.
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That("var n = (ns [&x=foo]); eval 'set x = bar' &ns=$n; put $n[x]").Puts("bar"),
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// Newly created variables do not appear in the local namespace.
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That("eval 'x = foo'; put $x").DoesNotCompile("variable $x not found"),
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// Newly created variables do not alter the specified namespace, either.
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That("var n = (ns [&]); eval &ns=$n 'var x = foo'; put $n[x]").
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Throws(vals.NoSuchKey("x"), "$n[x]"),
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// However, newly created variable can be accessed in the final
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// namespace using &on-end.
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That("eval &on-end={|n| put $n[x] } 'var x = foo'").Puts("foo"),
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// Parse error.
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That("eval '['").Throws(AnyParseError),
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// Compilation error.
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That("eval 'put $x'").Throws(ErrorWithType(&diag.Error{})),
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// Exception.
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That("eval 'fail x'").Throws(FailError{"x"}),
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)
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}
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func TestDeprecate(t *testing.T) {
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Test(t,
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That("deprecate msg").PrintsStderrWith("msg"),
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// Different call sites trigger multiple deprecation messages
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That("fn f { deprecate msg }", "f 2>"+os.DevNull, "f").
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PrintsStderrWith("msg"),
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// The same call site only triggers the message once
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That("fn f { deprecate msg}", "fn g { f }", "g 2>"+os.DevNull, "g 2>&1").
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DoesNothing(),
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)
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}
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func TestUseMod(t *testing.T) {
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testutil.InTempDir(t)
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must.WriteFile("mod.elv", "var x = value")
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Test(t,
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That("put (use-mod ./mod)[x]").Puts("value"),
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)
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}
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func TestResolve(t *testing.T) {
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libdir := testutil.InTempDir(t)
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must.WriteFile("mod.elv", "fn func { }")
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TestWithSetup(t, func(ev *Evaler) { ev.LibDirs = []string{libdir} },
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That("resolve for").Puts("special"),
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That("resolve put").Puts("$put~"),
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That("fn f { }; resolve f").Puts("$f~"),
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That("use mod; resolve mod:func").Puts("$mod:func~"),
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That("resolve cat").Puts("(external cat)"),
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That(`resolve external`).Puts("$external~"),
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)
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}
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