Struct term_transcript::test::TestConfig

pub struct TestConfig<Cmd = Command> { /* fields omitted */ }

This is supported on crate feature test only.

Testing configuration.

Examples

See the module docs for the examples of usage.

Implementations

impl<Cmd: SpawnShell> TestConfig<Cmd>

pub fn new(shell_options: ShellOptions<Cmd>) -> Self

Creates a new config.

Panics

• Panics if the svg crate feature is enabled and the TERM_TRANSCRIPT_UPDATE variable is set to an incorrect value. See UpdateMode::from_env() for more details.

pub fn with_match_kind(self, kind: MatchKind) -> Self

Sets the matching kind applied.

pub fn with_color_choice(self, color_choice: ColorChoice) -> Self

Sets coloring of the output.

On Windows, color_choice has slightly different semantics than its usage in the termcolor crate. Namely, if colors can be used (stdout is a tty with color support), ANSI escape sequences will always be used.

pub fn with_output(self, output: TestOutputConfig) -> Self

Configures test output.

pub fn with_template(self, template: Template) -> Self

This is supported on crate feature svg only.

Sets the template for rendering new snapshots.

pub fn with_update_mode(self, update_mode: UpdateMode) -> Self

This is supported on crate feature svg only.

Overrides the strategy for saving new snapshots for failed tests.

By default, the strategy is determined from the execution environment using UpdateMode::from_env().

pub fn test<I: Into<UserInput>>(
    &mut self,
    snapshot_path: impl AsRef<Path>,
    inputs: impl IntoIterator<Item = I>
)

Tests a snapshot at the specified path with the provided inputs.

If the path is relative, it is resolved relative to the current working dir, which in the case of tests is the root directory of the including crate (i.e., the dir where the crate manifest is located). You may specify an absolute path using env vars that Cargo sets during build, such as env!("CARGO_MANIFEST_DIR").

Similar to other kinds of snapshot testing, a new snapshot will be generated if there is no existing snapshot or there are mismatches between inputs or outputs in the original and reproduced transcripts. This new snapshot will have the same path as the original snapshot, but with the .new.svg extension. As an example, if the snapshot at snapshots/help.svg is tested, the new snapshot will be saved at snapshots/help.new.svg.

Generation of new snapshots will only happen if the svg crate feature is enabled (which it is by default), and if the update mode is not UpdateMode::Never, either because it was set explicitly or inferred from the execution environment.

The snapshot template can be customized via Self::with_template().

Panics

• Panics if there is no snapshot at the specified path, or if the path points to a directory.
• Panics if an error occurs during reproducing the transcript or processing its output.
• Panics if there are mismatches between inputs or outputs in the original and reproduced transcripts.

pub fn test_transcript(&mut self, transcript: &Transcript<Parsed>)

Tests the transcript. This is a lower-level alternative to Self::test().

Panics

• Panics if an error occurs during reproducing the transcript or processing its output.
• Panics if there are mismatches between outputs in the original and reproduced transcripts.

pub fn test_transcript_for_stats(
    &mut self,
    transcript: &Transcript<Parsed>
) -> Result<(TestStats, Transcript)>

Tests the transcript and returns testing stats together with the reproduced Transcript. This is a lower-level alternative to Self::test().

Errors

• Returns an error if an error occurs during reproducing the transcript or processing its output.

Trait Implementations

impl<Cmd: Debug> Debug for TestConfig<Cmd>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.