mirror of
https://github.com/go-sylixos/elvish.git
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284 lines
9.1 KiB
Go
284 lines
9.1 KiB
Go
package eval_test
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import (
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"testing"
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"time"
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. "src.elv.sh/pkg/eval"
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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/mods/file"
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"src.elv.sh/pkg/testutil"
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)
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func TestChunk(t *testing.T) {
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Test(t,
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// Empty chunk
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That("").DoesNothing(),
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// Outputs of pipelines in a chunk are concatenated
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That("put x; put y; put z").Puts("x", "y", "z"),
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// A failed pipeline cause the whole chunk to fail
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That("put a; e:false; put b").Puts("a").Throws(ErrorWithType(ExternalCmdExit{})),
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)
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}
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func TestPipeline(t *testing.T) {
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Test(t,
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// Pure byte pipeline
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That(`echo "Albert\nAllan\nAlbraham\nBerlin" | sed s/l/1/g | grep e`).
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Prints("A1bert\nBer1in\n"),
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// Pure value pipeline
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That(`put 233 42 19 | each {|x|+ $x 10}`).Puts(243, 52, 29),
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// Pipeline draining.
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That(`range 100 | put x`).Puts("x"),
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// TODO: Add a useful hybrid pipeline sample
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)
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}
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func TestPipeline_BgJob(t *testing.T) {
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setup := func(ev *Evaler) {
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ev.ExtendGlobal(BuildNs().AddNs("file", file.Ns))
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}
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notes1 := make(chan string)
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notes2 := make(chan string)
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putNote := func(ch chan<- string) func(*Evaler) {
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return func(ev *Evaler) {
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ev.BgJobNotify = func(note string) { ch <- note }
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}
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}
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verifyNote := func(notes <-chan string, wantNote string) func(t *testing.T) {
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return func(t *testing.T) {
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select {
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case note := <-notes:
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if note != wantNote {
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t.Errorf("got note %q, want %q", note, wantNote)
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}
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case <-time.After(testutil.Scaled(100 * time.Millisecond)):
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t.Errorf("timeout waiting for notification")
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}
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}
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}
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TestWithEvalerSetup(t, setup,
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That(
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"set notify-bg-job-success = $false",
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"var p = (file:pipe)",
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"{ print foo > $p; file:close $p[w] }&",
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"slurp < $p; file:close $p[r]").
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Puts("foo"),
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// Notification
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That(
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"set notify-bg-job-success = $true",
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"var p = (file:pipe)",
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"fn f { file:close $p[w] }",
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"f &",
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"slurp < $p; file:close $p[r]").
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Puts("").
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WithSetup(putNote(notes1)).
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Passes(verifyNote(notes1, "job f & finished")),
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// Notification, with exception
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That(
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"set notify-bg-job-success = $true",
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"var p = (file:pipe)",
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"fn f { file:close $p[w]; fail foo }",
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"f &",
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"slurp < $p; file:close $p[r]").
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Puts("").
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WithSetup(putNote(notes2)).
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Passes(verifyNote(notes2, "job f & finished, errors = foo")),
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)
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}
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func TestPipeline_ReaderGone(t *testing.T) {
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// See Unix-only tests in compile_effect_unix_test.go.
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Test(t,
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// Internal commands writing to byte output raises ReaderGone when the
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// reader is exited, which is then suppressed.
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That("while $true { echo y } | nop").DoesNothing(),
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That(
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"var reached = $false",
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"{ while $true { echo y }; reached = $true } | nop",
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"put $reached",
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).Puts(false),
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// Similar for value output.
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That("while $true { put y } | nop").DoesNothing(),
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That(
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"var reached = $false",
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"{ while $true { put y }; reached = $true } | nop",
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"put $reached",
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).Puts(false),
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)
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}
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func TestCommand(t *testing.T) {
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Test(t,
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That("put foo").Puts("foo"),
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// Command errors when the head is not a single value.
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That("{put put} foo").Throws(
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errs.ArityMismatch{What: "command",
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ValidLow: 1, ValidHigh: 1, Actual: 2},
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"{put put}"),
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// Command errors when the head is not callable or string containing slash.
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That("[] foo").Throws(
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errs.BadValue{
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What: "command",
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Valid: "callable or string containing slash",
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Actual: "[]"},
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"[]"),
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// Command errors when argument errors.
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That("put [][1]").Throws(ErrorWithType(errs.OutOfRange{}), "[][1]"),
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// Command errors when an option key is not string.
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That("put &[]=[]").Throws(
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errs.BadValue{What: "option key", Valid: "string", Actual: "list"},
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"put &[]=[]"),
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// Command errors when any optional evaluation errors.
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That("put &x=[][1]").Throws(ErrorWithType(errs.OutOfRange{}), "[][1]"),
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)
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}
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func TestCommand_Special(t *testing.T) {
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Test(t,
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// Regression test for #1204; ensures that the arguments of special
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// forms are not accidentally compiled twice.
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That("nop (and (use builtin)); nop $builtin:echo~").DoesNothing(),
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// Behavior of individual special commands are tested in
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// builtin_special_test.go.
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)
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}
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func TestCommand_LegacyTemporaryAssignment(t *testing.T) {
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Test(t,
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That("var a b = alice bob; {a,@b}=(put amy ben) put $a $@b; put $a $b").
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Puts("amy", "ben", "alice", "bob").PrintsStderrWith("deprecated"),
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// Temporary assignment of list element.
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That("var l = [a]; l[0]=x put $l[0]; put $l[0]").
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Puts("x", "a").PrintsStderrWith("deprecated"),
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// Temporary assignment of map element.
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That("var m = [&k=v]; m[k]=v2 put $m[k]; put $m[k]").
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Puts("v2", "v").PrintsStderrWith("deprecated"),
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// Temporary assignment before special form.
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That("li=[foo bar] for x $li { put $x }").
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Puts("foo", "bar").PrintsStderrWith("deprecated"),
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// Multiple LHSs in temporary assignments.
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That("{a b}={foo bar} put $a $b").
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Puts("foo", "bar").PrintsStderrWith("deprecated"),
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That("@a=(put a b) put $@a").
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Puts("a", "b").PrintsStderrWith("deprecated"),
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That("{a,@b}=(put a b c) put $@b").
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Puts("b", "c").PrintsStderrWith("deprecated"),
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// Using syntax of temporary assignment for non-temporary assignment no
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// longer compiles
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That("x=y").DoesNotCompile(
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`using the syntax of temporary assignment for non-temporary assignment is no longer supported; use "var" or "set" instead`),
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)
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}
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func TestCommand_LegacyTemporaryAssignmentSyntaxIsDeprecated(t *testing.T) {
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testCompileTimeDeprecation(t, "a=foo echo $a",
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"the legacy temporary assignment syntax is deprecated", 18)
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}
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func TestCommand_Redir(t *testing.T) {
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setup := func(ev *Evaler) {
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ev.ExtendGlobal(BuildNs().AddNs("file", file.Ns))
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}
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testutil.InTempDir(t)
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TestWithEvalerSetup(t, setup,
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// Output and input redirection.
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That("echo 233 > out1", " slurp < out1").Puts("233\n"),
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// Append.
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That("echo 1 > out; echo 2 >> out; slurp < out").Puts("1\n2\n"),
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// Read and write.
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// TODO: Add a meaningful use case that uses both read and write.
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That("echo 233 <> out1", " slurp < out1").Puts("233\n"),
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// Redirections from special form.
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That(`for x [lorem ipsum] { echo $x } > out2`, `slurp < out2`).
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Puts("lorem\nipsum\n"),
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// Using numeric FDs as source and destination.
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That(`{ echo foobar >&2 } 2> out3`, `slurp < out3`).
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Puts("foobar\n"),
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// Using named FDs as source and destination.
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That("echo 233 stdout> out1", " slurp stdin< out1").Puts("233\n"),
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That(`{ echo foobar >&stderr } stderr> out4`, `slurp < out4`).
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Puts("foobar\n"),
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// Using a new FD as source throws an exception.
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That(`echo foo >&4`).Throws(InvalidFD{FD: 4}),
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// Using a new FD as destination is OK, and makes it available.
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That(`{ echo foo >&4 } 4>out5`, `slurp < out5`).Puts("foo\n"),
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// Redirections from File object.
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That(`echo haha > out3`, `var f = (file:open out3)`, `slurp <$f`, ` file:close $f`).
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Puts("haha\n"),
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// Redirections from Pipe object.
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That(`var p = (file:pipe); echo haha > $p; file:close $p[w]; slurp < $p; file:close $p[r]`).
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Puts("haha\n"),
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// We can't read values from a file and shouldn't hang when iterating
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// over input from a file.
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// Regression test for https://src.elv.sh/issues/1010
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That("echo abc > bytes", "each $echo~ < bytes").Prints("abc\n"),
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That("echo def > bytes", "only-values < bytes | count").Puts(0),
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// Writing value output to file throws an exception.
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That("put foo >a").Throws(ErrPortDoesNotSupportValueOutput, "put foo >a"),
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// Writing value output to closed port throws an exception too.
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That("put foo >&-").Throws(ErrPortDoesNotSupportValueOutput, "put foo >&-"),
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// Invalid redirection destination.
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That("echo []> test").Throws(
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errs.BadValue{
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What: "redirection destination",
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Valid: "fd name or number", Actual: "[]"},
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"[]"),
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// Invalid fd redirection source.
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That("echo >&test").Throws(
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errs.BadValue{
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What: "redirection source",
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Valid: "fd name or number or '-'", Actual: "test"},
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"test"),
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// Invalid redirection source.
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That("echo > []").Throws(
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errs.BadValue{
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What: "redirection source",
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Valid: "string, file or map", Actual: "list"},
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"[]"),
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// Invalid map for redirection.
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That("echo < [&]").Throws(
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errs.BadValue{
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What: "map for input redirection",
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Valid: "map with file in the 'r' field", Actual: "[&]"},
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"[&]"),
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That("echo > [&]").Throws(
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errs.BadValue{
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What: "map for output redirection",
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Valid: "map with file in the 'w' field", Actual: "[&]"},
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"[&]"),
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// Exception when evaluating source or destination.
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That("echo > (fail foo)").Throws(FailError{"foo"}, "fail foo"),
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That("echo (fail foo)> file").Throws(FailError{"foo"}, "fail foo"),
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)
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}
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func TestCommand_Stacktrace(t *testing.T) {
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oops := ErrorWithMessage("oops")
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Test(t,
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// Stack traces.
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That("fail oops").Throws(oops, "fail oops"),
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That("fn f { fail oops }", "f").Throws(oops, "fail oops ", "f"),
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That("fn f { fail oops }", "fn g { f }", "g").Throws(
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oops, "fail oops ", "f ", "g"),
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// Error thrown before execution.
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That("fn f { }", "f a").Throws(ErrorWithType(errs.ArityMismatch{}), "f a"),
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// Error from builtin.
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That("count 1 2 3").Throws(
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ErrorWithType(errs.ArityMismatch{}), "count 1 2 3"),
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)
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}
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