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Tuner

Test whenever you touch the tuner, InputBlock pitch detection, reference pitch, tuner modes, or the Tuner tab lifecycle.

Prerequisites

  • An audio input source (guitar, microphone, or test tone)

Test Cases

TC-TU-001: Tuner activates on tab switch

Steps:

  1. Switch to the Tuner tab

Expected: Output mutes (no audio from speakers). Tuner display is active and waiting for signal.

TC-TU-002: Pitch detection

Steps:

  1. Switch to the Tuner tab
  2. Play an A4 note (440 Hz) or enable the test tone

Expected: Tuner detects “A” with octave 4. Frequency reads close to 440 Hz. Cents needle is near centre.

TC-TU-003: Deactivates on tab switch away

Steps:

  1. Switch to the Tuner tab (output mutes)
  2. Switch back to the Grid tab

Expected: Audio output resumes. Tuner stops detecting.

TC-TU-004: Needle mode colour coding

Steps:

  1. Switch to Tuner tab in Needle mode
  2. Play a note that’s in tune (< 5 cents off)
  3. Play a note that’s slightly off (5-15 cents)
  4. Play a note that’s significantly off (> 15 cents)

Expected: Needle is green when in tune, yellow when close, pink when far off.

TC-TU-005: Strobe mode animation

Steps:

  1. Switch to Strobe mode in the Tuner sidebar
  2. Play an in-tune note
  3. Play a sharp note
  4. Play a flat note

Expected: Stripes are stationary and green when in tune. Stripes scroll right when sharp, left when flat. Speed is proportional to how far off the pitch is.

TC-TU-006: Reference pitch change

Steps:

  1. Set reference pitch to 432 Hz in the Tuner sidebar
  2. Play an A4 at 432 Hz (or as close as you can)

Expected: Tuner shows “A4” as in tune at 432 Hz, not 440 Hz.

TC-TU-007: Reference pitch persists

Steps:

  1. Set reference pitch to 442 Hz
  2. Quit and relaunch the app
  3. Switch to the Tuner tab

Expected: Reference pitch is still 442 Hz.

TC-TU-008: Quick-select pitch buttons

Steps:

  1. Click each preset button (432, 440, 442, 444)

Expected: Reference pitch updates. Active button is highlighted. Number input reflects the value.

TC-TU-009: No signal state

Steps:

  1. Switch to Tuner tab with no audio input (or mute your input)

Expected: Display shows ”—” for note and ”— Hz” for frequency. Needle/strobe is inactive (dim).